Editing Imperial units (section)

== Current use ==
<!-- United States customary units are covered above. -->=== United Kingdom ===
{{see also|Metrication in the United Kingdom}}
[[File:Metric_and_imperial_systems_(2019).svg|thumb|Countries using the [[Metric system|metric]] ([[International System of Units|SI]]), imperial and [[US customary]] systems as of 2019]]
Since the [[Weights and Measures Act 1985]], British law defines base imperial units in terms of their metric equivalent. The metric system is routinely used in business and technology within the United Kingdom, with imperial units remaining in widespread use amongst the public.<ref name="BBCNews December 2011">{{cite news|title=Will British people ever think in metric?|url=https://www.bbc.co.uk/news/magazine-16245391|access-date=26 February 2017|publisher=BBC|date=21 December 2011|first=Jon|last=Kelly|quote=...but today the British remain unique in Europe by holding onto imperial weights and measures. ...the persistent British preference for imperial over metric is particularly noteworthy...|archive-date=24 April 2012|archive-url=https://web.archive.org/web/20120424232814/http://www.bbc.co.uk/news/magazine-16245391|url-status=live}}</ref> All UK roads use the imperial system except for weight limits, and newer height or width restriction signs give metric alongside imperial.<ref name="BBCNews November 2014">{{cite news|title=Height and width road signs to display metric and imperial|url=https://www.bbc.com/news/uk-29965935|access-date=26 February 2017|publisher=BBC|date=8 November 2014|quote=New road signs showing height and width restrictions will use both metric and imperial measurements from March 2015....Road signs for bridges, tunnels and narrow roads can currently show measurements in just feet and inches or only metres. Some already display both.|archive-date=26 February 2017|archive-url=https://web.archive.org/web/20170226222752/http://www.bbc.com/news/uk-29965935|url-status=live}}</ref>[[File:MetricImperialUSCustomaryUnits.jpg|thumb|upright|A baby bottle that measures in three measurement systems—metric, imperial (UK), and US customary]]
Traders in the UK may accept requests from customers specified in imperial units, and scales which display in both unit systems are commonplace in the retail trade. Metric price signs may be accompanied by imperial price signs provided that the imperial signs are no larger and no more prominent than the metric ones.

The United Kingdom completed its official partial transition to the metric system in 1995, with imperial units still legally mandated for certain applications such as draught beer and cider,<ref name="WMbeer">{{cite web |url=http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1073792198 |archive-url=https://web.archive.org/web/20110720114311/http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1073792198 |archive-date=2011-07-20 |title=BusinessLink: Weights and measures: Rules for pubs, restaurants and cafes|access-date=24 August 2009|format=online |publisher= Department for Business, Innovation & Skills }}</ref> and road-signs.<ref name="WMroads">{{cite web |url=http://www.bwmaonline.com/Transport%20-%20DfT%20memo.htm |title=Department for Transport statement on metric road signs |access-date=24 August 2009 |date=12 July 2002 |format=online |publisher=BWMA |archive-date=25 May 2009 |archive-url=https://web.archive.org/web/20090525082727/http://www.bwmaonline.com/Transport%20-%20DfT%20memo.htm |url-status=live }}</ref> Therefore, the speedometers on vehicles sold in the UK must be capable of displaying miles per hour. Even though the [[troy weight|troy pound]] was outlawed in the UK in the [[Weights and Measures Act 1878]], the ''troy ounce'' may still be used for the weights of precious stones and metals. The original railways (many built in the Victorian era) are a big user of imperial units, with distances officially measured in miles and yards or miles and [[chain (length)|chains]], and also feet and inches, and speeds are in miles per hour.

Some British people still use one or more imperial units in everyday life for distance (miles, yards, feet, and inches) and some types of volume measurement (especially milk and beer in pints; rarely for canned or bottled soft drinks, or [[Gasoline|petrol]]).<ref name="BBCNews December 2011"/><ref>{{cite news |work=The Guardian |date=1 December 2006 |title=In praise of ... metric measurements |url=https://www.theguardian.com/commentisfree/2006/dec/01/comment.britishidentity |location=London |access-date=29 October 2017 |archive-date=19 September 2017 |archive-url=https://web.archive.org/web/20170919233902/https://www.theguardian.com/commentisfree/2006/dec/01/comment.britishidentity |url-status=live }}</ref> {{As of|February 2021}}, many British people also still use imperial units in everyday life for body weight (stones and pounds for adults, pounds and ounces for babies).<ref>{{cite web |url=https://moneyweek.com/economy/uk-economy/602705/decimalisation-britains-new-pence-turn-50-years-old |title=Decimalisation: Britain's "new pence" turn 50 years old |last=King |first=Max |date=15 February 2021 |work=MoneyWeek |access-date=8 April 2021 |archive-date=15 May 2021 |archive-url=https://web.archive.org/web/20210515143311/https://moneyweek.com/economy/uk-economy/602705/decimalisation-britains-new-pence-turn-50-years-old |url-status=live }}</ref> Government documents aimed at the public may give body weight and height in imperial units as well as in metric.<ref>{{cite web |title=BMI healthy weight calculator |url=http://www.nhs.uk/Tools/Documents/BMI%20Healthy%20weight%20calculator.htm |publisher=[[National Health Service]] |access-date=25 November 2015 |archive-date=19 January 2016 |archive-url=https://web.archive.org/web/20160119013839/http://www.nhs.uk/Tools/Documents/BMI%20Healthy%20weight%20calculator.htm |url-status=live }}</ref> A survey in 2015 found that many people did not know their body weight or height in both systems.<ref>{{Cite web|access-date=29 October 2017|date=20 June 2015|first1=Will|last1=Dahlgreen|url=https://yougov.co.uk/news/2015/06/20/britains-metric-muddle/|title=Britain's metric muddle not changing any time soon|quote=even today [2015] some 18-24-year-olds still do not know how much they weigh in kilograms (60%) or how tall they are in metres and centimetres (54%).|archive-date=30 October 2017|archive-url=https://web.archive.org/web/20171030003336/https://yougov.co.uk/news/2015/06/20/britains-metric-muddle/|url-status=live}}</ref><!--Unfortunately, they don't say how many people didn't know their weight /height in either system, and the alternative weight units were pounds, not the stones and pounds normally used in the UK; so a better source would be good)--> As of 2017, people under the age of 40 preferred the metric system but people aged 40 and over preferred the imperial system.<ref>{{Cite web|access-date=29 October 2017|date=2015|url=https://d25d2506sfb94s.cloudfront.net/cumulus_uploads/document/vsi5u7fi74/InternalResults_150609_systems_of_measurement_Website.pdf|title=YouGov Survey Results|archive-date=30 October 2017|archive-url=https://web.archive.org/web/20171030003559/https://d25d2506sfb94s.cloudfront.net/cumulus_uploads/document/vsi5u7fi74/InternalResults_150609_systems_of_measurement_Website.pdf|url-status=live}}</ref> As in other English-speaking countries, including [[Australia]], [[Canada]] and the [[United States]], the height of horses is usually measured in [[Hand (unit)|hands]], standardised to {{Convert|4|in|sigfig=3}}. Fuel consumption for vehicles is commonly stated in miles per gallon (mpg), though official figures always include litres per {{Val|100|u=km}} equivalents and fuel is sold in litres. When sold [[draught beer|draught]] in licensed premises, beer and cider must be sold in pints, half-pints or third-pints.<ref>{{Cite web|url=https://www.gov.uk/weights-measures-and-packaging-the-law/specified-quantities|title=Weights and measures: the law|date=7 April 2020|website=gov.uk|access-date=7 April 2020|archive-date=2 October 2015|archive-url=https://web.archive.org/web/20151002115839/https://www.gov.uk/weights-measures-and-packaging-the-law/specified-quantities|url-status=live}}</ref> Cow's milk is available in both litre- and pint-based containers in supermarkets and shops. Areas of land associated with farming, forestry and real estate are commonly advertised in acres and square feet but, for contracts and [[land registration]] purposes, the units are always hectares and square metres.<ref name="legislation_20093045">{{Cite web | url= http://www.legislation.gov.uk/uksi/2009/3045/pdfs/uksiem_20093045_en.pdf | year= 2009 | title= Explanatory memorandum to The weights and measures (metrication amendments) regulations 2009 | publisher= [[Legislation.gov.uk]] | access-date= 3 November 2019 | archive-date= 4 March 2021 | archive-url= https://web.archive.org/web/20210304074504/https://www.legislation.gov.uk/uksi/2009/3045/pdfs/uksiem_20093045_en.pdf | url-status= live }} See paragraph 7.4.</ref>

Office space and industrial units are usually advertised in square feet. Steel pipe sizes are sold in increments of inches, while copper pipe is sold in increments of millimetres. Road bicycles have their frames measured in centimetres, while off-road bicycles have their frames measured in inches. [[Display size]]s for screens on television sets and computer monitors are always [[diagonal]]ly measured in inches. Food sold by length or width, e.g. pizzas or sandwiches, is generally sold in inches. Clothing is usually sized in inches, with the metric equivalent often shown as a small supplementary indicator. Gas is usually measured by the cubic foot or cubic metre, but is billed like electricity by the [[kilowatt hour]].<ref>{{cite web|url=https://www.gov.uk/guidance/gas-meter-readings-and-bill-calculation|title=Gas meter readings and bill calculation|website=gov.uk|access-date=15 December 2016|archive-date=20 December 2016|archive-url=https://web.archive.org/web/20161220171928/https://www.gov.uk/guidance/gas-meter-readings-and-bill-calculation|url-status=live}}</ref>

Pre-packaged products can show both metric and imperial measures, and it is also common to see imperial pack sizes with metric only labels, e.g. a {{cvt|1|lb|g|0}} tin of Lyle's Golden Syrup is always labelled {{Val|454|u=g}} with no imperial indicator. Similarly most jars of jam and packs of sausages are labelled {{Val|454|u=g}} with no imperial indicator.

===India===

{{main|Metrication in India}}

[[India]] began converting to the metric system from the imperial system between 1955 and 1962. The metric system in weights and measures was adopted by the [[Indian Parliament]] in December 1956 with the ''Standards of Weights and Measures Act'', which took effect beginning 1 October 1958. By 1962, metric units became "mandatory and exclusive."<ref>{{cite journal |last1=Velkar |first1=Ashish |title=Rethinking Metrology, Nationalism and Development in India, 1833–1956 |journal=Past & Present |date=May 2018 |issue=239 |pages=143–79 |doi=10.1093/pastj/gtx064 |url=https://www.research.manchester.ac.uk/portal/files/65152126/Past_Present_Author_Accepted_Version.pdf |access-date=30 April 2022 |archive-date=29 May 2022 |archive-url=https://web.archive.org/web/20220529075121/https://www.research.manchester.ac.uk/portal/files/65152126/Past_Present_Author_Accepted_Version.pdf |url-status=live }}</ref>

Today all official measurements are made in the metric system. In common usage some older Indians may still refer to imperial units. Some measurements, such as the heights of mountains, are still recorded in feet. Tyre rim diameters are still measured in inches, as used worldwide. Industries like the construction and the real estate industry still use both the metric and the imperial system though it is more common for sizes of homes to be given in square feet and land in acres.<ref name="Acharya, Anil Kumar 1958">Acharya, Anil Kumar. ''History of Decimalisation Movement in India'', Auto-Print & Publicity House, 1958.</ref>

In [[Indian English|Standard Indian English]], as in [[Australian English|Australian]], [[Canadian English|Canadian]], [[New Zealand English|New Zealand]], [[Singaporean English|Singaporean]], and [[British English]], metric units such as the litre, metre, and [[tonne]] utilise the traditional spellings brought over from [[French language|French]], which differ from those used in the [[American English|United States]] and the [[Philippine English|Philippines]]. The imperial long ton is invariably spelt with one 'n'.<ref name="Acharya, Anil Kumar 1958"/>

===Hong Kong===

[[Hong Kong]] has three main systems of [[units of measurement]] in current use:

* The [[Chinese units of measurement]] of the [[Qing Empire]] (no longer in widespread use in China);
* British imperial units; and
* The [[metric system]].

In 1976 the [[Hong Kong Government]] started the conversion to the metric system, and as of 2012 measurements for government purposes, such as road signs, are almost always in metric units. All three systems are officially permitted for trade,<ref name="Ordinance">{{cite web|url=http://www.hklii.hk/eng/hk/legis/ord/68/sch2.html|title=CAP 68 WEIGHTS AND MEASURES ORDINANCE Sched 2 UNITS OF MEASUREMENT AND PERMITTED SYMBOLS OR ABBREVIATIONS OF UNITS OF MEASUREMENT LAWFUL FOR USE FOR TRADE|access-date=31 January 2015|archive-date=3 September 2015|archive-url=https://web.archive.org/web/20150903233217/http://www.hklii.hk/eng/hk/legis/ord/68/sch2.html|url-status=live}}</ref> and in the wider society a mixture of all three systems prevails.

The Chinese system's most commonly used units for length are {{lang|zh|里}} (''lei<sup>5</sup>''), {{lang|zh|丈}} (''zoeng<sup>6</sup>''), {{lang|zh|尺}} (''[[Chi (unit)|cek<sup>3</sup>]]''), {{lang|zh|寸}} (''[[tsun|cyun<sup>3</sup>]]''), {{lang|zh|分}} (''fan<sup>1</sup>'') in descending scale order. These units are now rarely used in daily life, the imperial and metric systems being preferred. The imperial equivalents are written with the same basic Chinese characters as the Chinese system. In order to distinguish between the units of the two systems, the units can be prefixed with "Ying" ({{lang|zh|英}}, ''jing<sup>1</sup>'') for the imperial system and "Wa" ({{lang|zh|華}}, ''waa<sup>4</sup>'') for the Chinese system. In writing, derived characters are often used, with an additional {{lang|zh|口}} (mouth) [[Kangxi radicals|radical]] to the left of the original Chinese character, for writing imperial units. The most commonly used units are the [[mile]] or "li" ({{lang|zh|哩}}, ''li<sup>1</sup>''), the [[yard]] or "ma" ({{lang|zh|碼}}, ''maa<sup>5</sup>''), the [[Foot (unit)|foot]] or "chek" ({{lang|zh|呎}}, ''cek<sup>3</sup>''), and the [[inch]] or "tsun" ({{lang|zh|吋}}, ''cyun<sup>3</sup>'').

The traditional measure of flat area is the square foot ({{lang|zh|方呎, 平方呎}}, ''fong<sup>1</sup> cek<sup>3</sup>, ping<sup>4</sup> fong<sup>1</sup> cek<sup>3</sup>'') of the imperial system, which is still in common use for real estate purposes. The measurement of agricultural plots and fields is traditionally conducted in {{lang|zh|畝}} (''mau<sup>5</sup>'') of the Chinese system.

For the measurement of volume, Hong Kong officially uses the metric system, though the gallon ({{lang|zh|加侖}}, ''gaa<sup>1</sup> leon<sup>4-2</sup>'') is also occasionally used.

=== Canada ===
{{See also|Metrication in Canada}}
[[File:GasCan.jpg|thumb|upright|A one US gallon gas can purchased near the US-Canada border showing equivalences in imperial gallons and litres]]
[[File:Canadian canned food labels showing imperial and metric units of measurement.jpg|thumb|Imperial and metric measurements on Canadian canned goods labels. The imperial measurements often take precedence over the metric ones on labels.]]
During the 1970s, the metric system and SI units were introduced in Canada to replace the imperial system. Within the government, efforts to implement the metric system were extensive; almost any agency, institution, or function provided by the government uses SI units exclusively. Imperial units were eliminated from all public road signs and both systems of measurement will still be found on privately owned signs, such as the height warnings at the entrance of a [[Multi-storey car park|parkade]]. In the 1980s, momentum to fully convert to the metric system stalled when the government of [[Brian Mulroney]] was elected. There was heavy opposition to metrication and as a compromise the government maintains legal definitions for and allows use of imperial units as long as metric units are shown as well.<ref>
{{cite web
 |url=http://laws.justice.gc.ca/en/showdoc/cs/W-6/sc:2//en#anchorsc:2
 |title=Weights and Measures Act: Canadian units of measure
 |publisher=Justice Canada
 |access-date=14 November 2007
 |url-status=dead|archive-url=https://web.archive.org/web/20110605042528/http://laws.justice.gc.ca/en/showdoc/cs/W-6/sc%3A2//en
 |archive-date=5 June 2011
}}</ref><ref>
{{cite book
 |chapter-url=http://www.inspection.gc.ca/english/fssa/labeti/guide/ch11e.shtml#11.2 
 |title=Guide to Food Labelling and Advertising 
 |chapter=11 
 |publisher=[[Canadian Food Inspection Agency]] 
 |access-date=1 December 2007 
 |url-status=dead
 |archive-url=https://web.archive.org/web/20080124081159/http://www.inspection.gc.ca/english/fssa/labeti/guide/ch11e.shtml 
 |archive-date=24 January 2008
}}</ref><ref>{{cite web
 |url=http://lois-laws.justice.gc.ca/eng/regulations/C.R.C.,_c._417/
 |title=Consumer Packaging and Labelling Regulations (C.R.C., c. 417)
 |access-date=15 November 2012
 |publisher=Justice Canada, Legislative Services Branch
 |archive-date=27 December 2012
 |archive-url=https://web.archive.org/web/20121227050045/http://lois-laws.justice.gc.ca/eng/regulations/C.R.C.%2C%5Fc.%5F417/
 |url-status=live
 }}</ref><ref>{{cite web
 |url=https://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/lm04293.html#Part3SectionA
 |title=Field Inspection Manual — Automatic Weighing Devices: Part 3, Section A: Abbreviations and Symbols Accepted in Canada
 |date=2 February 2017
 |access-date=21 July 2022
 |archive-date=26 August 2022
 |archive-url=https://web.archive.org/web/20220826160500/https://www.ic.gc.ca/eic/site/mc-mc.nsf/eng/lm04293.html#Part3SectionA
 |url-status=live
 }}</ref>

The law requires that measured products (such as fuel and meat) be priced in metric units and an imperial price can be shown if a metric price is present.<ref name="Canadian compromise">
{{cite web |url=http://archives.cbc.ca/clip.asp?page=1&IDLan=1&IDClip=10620&IDCat=345&IDCatPa=261 |title=A Canadian compromise |access-date=11 March 2008 |publisher=[[Canadian Broadcasting Corporation|CBC]] |date=30 January 1985 |archive-url=https://web.archive.org/web/20090116024023/http://archives.cbc.ca/clip.asp?page=1&IDLan=1&IDClip=10620&IDCat=345&IDCatPa=261 |archive-date=2009-01-16}}
</ref><ref name="Livre">{{cite web |url=http://archives.radio-canada.ca/clip.asp?page=1&IDLan=0&IDClip=9378&IDCat=216&IDCatPa=151 |title=Les livres et les pieds, toujours présents (eng:The pounds and feet, always present) |access-date=11 March 2008 |publisher=5 sur 5, Société [[Canadian Broadcasting Corporation|Radio-Canada]] |language=fr |archive-date=6 June 2011 |archive-url=https://web.archive.org/web/20110606173005/http://archives.radio-canada.ca/clip.asp?page=1&IDLan=0&IDClip=9378&IDCat=216&IDCatPa=151 |url-status=dead }}</ref> There tends to be leniency in regards to fruits and vegetables being priced in imperial units only.
[[Environment Canada]] still offers an imperial unit option beside metric units, even though weather is typically measured and reported in metric units in the Canadian media. Some radio stations near the United States border (such as [[CIMX]] and [[CIDR-FM|CIDR]]) primarily use imperial units to report the weather. Railways in Canada also continue to use imperial units.

Imperial units are still used in ordinary conversation. Today, Canadians typically use a mix of metric and imperial measurements in their daily lives. The use of the metric and imperial systems varies by age. The older generation mostly uses the imperial system, while the younger generation more often uses the metric system. [[Quebec]] has implemented metrication more fully. {{citation needed |date=July 2019}} Newborns are measured in SI at hospitals, but the birth weight and length is also announced to family and friends in imperial units. Drivers' licences use SI units, though many English-speaking Canadians give their height and weight in imperial. In livestock auction markets, cattle are sold in dollars per [[hundredweight]] (short), whereas hogs are sold in dollars per hundred kilograms. Imperial units still dominate in recipes, construction, house renovation and gardening.<ref>{{cite web|url=http://www.bwmaonline.com/Imperial%20Origins.htm|title=Imperial Measures - The Origins|publisher=[[British Weights and Measures Association]]|website=BWMAOnline.com|date=15 February 2021|access-date=5 March 2011|archive-date=15 May 2011|archive-url=https://web.archive.org/web/20110515101232/http://www.bwmaonline.com/Imperial%20Origins.htm|url-status=live}}</ref><ref>{{cite news|url=https://www.pressreader.com/canada/national-post-latest-edition/20110222/283661116291286|title=Crepes worth savouring|work=[[National Post]]|via=PressReader.com|first=Amy|last=Rosen|date=23 February 2011|access-date=11 July 2019|archive-date=11 July 2019|archive-url=https://web.archive.org/web/20190711135613/https://www.pressreader.com/canada/national-post-latest-edition/20110222/283661116291286|url-status=live}}</ref><ref>{{cite news|url=https://www.pressreader.com/canada/national-post-national-edition/20110201/283403418230709|title=Scoring brownie points|work=[[National Post]]|via=PressReader.com|first=Amy|last=Rosen|date=2 February 2011|access-date=11 July 2019|archive-date=11 July 2019|archive-url=https://web.archive.org/web/20190711135612/https://www.pressreader.com/canada/national-post-national-edition/20110201/283403418230709|url-status=live}}</ref><ref>{{cite news|url=https://nationalpost.com/news/drinking-school/wcm/f22ca2bc-5ad6-4a50-a8c9-eee40d832521|title=Drinking school|work=[[National Post]]|first=Adam|last=McDowell|date=28 February 2011}}</ref><ref>{{cite web|url=http://www.homehardware.ca/en/cat/index.htm/Building-Supplies/Building-Materials/Fence-Products/_/N-nthr4|title=Home Hardware - Building Supplies - Building Materials - Fence Products|access-date=5 March 2011|archive-url=https://web.archive.org/web/20110629070126/http://www.homehardware.ca/en/cat/index.htm/Building-Supplies/Building-Materials/Fence-Products/_/N-nthr4|archive-date=29 June 2011|url-status=dead}}</ref> Land is now surveyed and registered in metric units whilst initial surveys used imperial units. For example, partitioning of farmland on the prairies in the late 19th and early 20th centuries was done in imperial units; this accounts for imperial units of distance and area retaining wide use in the [[Prairie Provinces]]. 

In English-speaking Canada commercial and residential spaces are mostly (but not exclusively) constructed using square feet, while in French-speaking Quebec commercial and residential spaces are constructed in metres and advertised using both square metres and square feet as equivalents. Carpet or flooring tile is purchased by the square foot, but less frequently also in square metres.<ref>{{cite web| url = https://www.tripadvisor.com/Travel-g153339-c15311/Canada:Metric.System.html| title = Canada: Metric System| access-date = 24 February 2020| archive-date = 13 February 2020| archive-url = https://web.archive.org/web/20200213223443/https://www.tripadvisor.com/Travel-g153339-c15311/Canada:Metric.System.html| url-status = live}}</ref><ref>{{cite news|url=http://www.lapresse.ca/vivre/societe/201508/25/01-4895245-systeme-metrique-a-quand-le-virage-final.php|title=Système métrique: à quand le virage final?|first=Marie|last=Allard|work=LaPresse.ca|date=2015-08-25|language=fr|access-date=24 February 2020|archive-date=24 February 2020|archive-url=https://web.archive.org/web/20200224085807/https://www.lapresse.ca/vivre/societe/201508/25/01-4895245-systeme-metrique-a-quand-le-virage-final.php|url-status=live}}</ref> Motor-vehicle fuel consumption is reported in both litres per {{Val|100|u=km}} and statute miles per imperial gallon,<ref>{{cite web|url=http://www.oee.nrcan.gc.ca/transportation/tools/fuelratings/ratings-search.cfm?attr=8|title=Fuel Consumption Ratings Search Tool - Conventional Vehicles|first=Government of Canada, Natural Resources|last=Canada|access-date=15 January 2009|archive-date=6 July 2011|archive-url=https://web.archive.org/web/20110706181822/http://www.oee.nrcan.gc.ca/transportation/tools/fuelratings/ratings-search.cfm?attr=8|url-status=dead}}</ref> leading to the erroneous impression that Canadian vehicles are 20% more fuel-efficient than their apparently identical American counterparts for which fuel economy is reported in statute miles per US gallon (neither country specifies which gallon is used). Canadian railways maintain exclusive use of imperial measurements to describe train length (feet), train height (feet), capacity ([[Short ton|tons]]), speed (mph), and trackage (miles).<ref>{{cite web|url=http://www.tsb.gc.ca/eng/rapports-reports/rail/1996/r96w0171/r96w0171.asp|title=Railway Investigation Report R96W0171|first=Government of Canada, Transportation Safety Board of|last=Canada|date=9 April 1999|access-date=5 March 2011|archive-date=6 July 2011|archive-url=https://web.archive.org/web/20110706181813/http://www.tsb.gc.ca/eng/rapports-reports/rail/1996/r96w0171/r96w0171.asp|url-status=live}}</ref>

Imperial units also retain common use in firearms and ammunition. Imperial measures are still used in the description of cartridge types, even when the cartridge is of relatively recent invention (e.g., [[.204 Ruger]], [[.17 HMR]], where the calibre is expressed in decimal fractions of an inch). Ammunition that is already classified in metric is still kept metric (e.g., [[9×19mm]]). In the manufacture of ammunition, bullet and powder weights are expressed in terms of [[grain (measure)|grains]] for both metric and imperial cartridges.

In keeping with the international standard, air navigation is based on ''nautical'' units, e.g., the nautical mile, which is neither imperial nor metric, and altitude is measured in imperial feet.<ref>{{cite web|url=http://www.langleyflyingschool.com/Pages/Canadian%20Aviation%20Regulations.html#Altimeter%20Rules|title=Canadian Aviation Regulations|website=Langley Flying School|at=sec. "Altimeter Rules"|access-date=14 May 2014|archive-date=14 May 2014|archive-url=https://web.archive.org/web/20140514113051/http://www.langleyflyingschool.com/Pages/Canadian%20Aviation%20Regulations.html#Altimeter%20Rules|url-status=live}}</ref>

===Australia===
{{Main|Metrication in Australia}}
While metrication in Australia has largely ended the official use of imperial units, for particular measurements, international use of imperial units is still followed.

* In licensed venues, draught beer and cider is sold in glasses and jugs with [[beer in Australia#Sizes|sizes]] based on the imperial fluid ounce, though rounded to the nearest 5&nbsp;mL.
* Newborns are measured in metric at hospitals, but the birth weight and length is sometimes also announced to family and friends in imperial units.
* Screen sizes, are frequently described in inches instead of or as well as centimetres.
* Property size is infrequently described in acres, but is mostly as square metres or [[Hectare|hectares]].
* Marine navigation is done in nautical miles, and water-based speed limits are in nautical miles per hour.
* Historical writing and presentations may include pre-metric units to reflect the context of the era represented.
* The illicit drug trade in Australia still often uses imperial measurements, particularly when dealing with smaller amounts closer to end user levels e.g. "8-ball" an 8th of an ounce or {{Val|3.5|u=g}}; cannabis is often traded in ounces ("oz") and pounds ("p"){{cn|reason=for 'p' representing 'lb'|date=May 2023}}
* Firearm barrel length are almost always referred by in inches, ammunition is also still measured in grains and ounces as well as grams.
* A persons height is frequently and informally described in feet and inches, but on official records is described in metres.

The influence of British and American culture in Australia has been noted to be a cause for residual use of imperial units of measure.

===New Zealand===
{{Main|Metrication in New Zealand}}
New Zealand introduced the metric system on 15 December 1976.<ref>{{cite web| url = https://www.beehive.govt.nz/release/30-years-metric-system| title = "30 Years of the Metric System"| access-date = 4 February 2021| archive-date = 9 February 2021| archive-url = https://web.archive.org/web/20210209075115/https://www.beehive.govt.nz/release/30-years-metric-system| url-status = live}}</ref> Aviation was exempt, with altitude and airport elevation continuing to be measured in feet whilst navigation is done in [[nautical mile]]s; all other aspects (fuel quantity, aircraft weight, runway length, etc.) use metric units.

Screen sizes for devices such as televisions, monitors and phones, and wheel rim sizes for vehicles, are stated in inches, as is the convention in the rest of the world - and a 1992 study found a continued use of imperial units for birth weight and human height alongside metric units.<ref>[http://www.psychology.org.nz/cms_show_download.php?id=785 "Human use of metric measures of length"] {{webarchive |url=https://web.archive.org/web/20130209034410/http://www.psychology.org.nz/cms_show_download.php?id=785 |date=9 February 2013 }}. Dignan, J. R. E., & O'Shea, R. P. (1995). New Zealand Journal of Psychology, '''24''', 21–25.</ref>

===Ireland===
{{Main|Metrication in Ireland}}
Ireland has officially changed over to the metric system since entering the [[European Union]], with distances on new road signs being metric since 1997 and speed limits being metric since 2005. The imperial system remains in limited use – for sales of beer in pubs (traditionally sold by the pint). All other goods are required by law to be sold in metric units with traditional quantities being retained for goods like butter and sausages, which are sold in {{Convert|454|g|lb|0}} packaging. The majority of cars sold pre-2005 feature speedometers with miles per hour as the primary unit, but with a kilometres per hour display. Often signs such as those for bridge height can display both metric and imperial units. Imperial measurements continue to be used colloquially by the general population especially with height and distance measurements such as feet, inches, and acres as well as for weight with pounds and stones still in common use among people of all ages. Measurements such as yards have fallen out of favour with younger generations. Ireland's railways still use imperial measurements for distances and speed signage.<ref>{{Cite web|title=Republic of Ireland|url=http://www.railsigns.uk/overseas/ireland2/ireland2.html|access-date=2021-02-22|publisher=www.railsigns.uk|archive-date=23 October 2021|archive-url=https://web.archive.org/web/20211023194641/http://www.railsigns.uk/overseas/ireland2/ireland2.html|url-status=dead}}</ref><ref>{{Cite web|title=Network Statement 2022|url=https://www.irishrail.ie/Admin/getmedia/41c1078d-a0e8-42c5-84c4-08bc8c063e0f/IE-2022-Network-Statement.pdf|publisher=[[Irish Rail]]|access-date=2022-02-24|language=en|archive-date=19 January 2022|archive-url=https://web.archive.org/web/20220119133324/https://www.irishrail.ie/Admin/getmedia/41c1078d-a0e8-42c5-84c4-08bc8c063e0f/IE-2022-Network-Statement.pdf|url-status=live}}</ref> Property is usually listed in square feet as well as metres also.

Horse racing in Ireland still continues to use stones, pounds, miles and furlongs as measurements.<ref>{{cite web| url = http://www.hri-ras.ie/information-centre/hri-directives-and-rules/full/| url-status = dead| archive-url = https://web.archive.org/web/20160504050454/http://www.hri-ras.ie/information-centre/hri-directives-and-rules/full/| archive-date = 4 May 2016| title = Full HRI Directives}}</ref>

===Bahamas===
Imperial measurements remain in general use in the [[Bahamas]].

Legally, both the imperial and metric systems are recognised by the Weights and Measures Act 2006.<ref>{{cite web |author1=Parliament of the Bahamas |title=Weights and Measures Act 2006 |url=https://www.bbsq.bs/en/files/acts-and-regulations/1-weights-and-measures-act/file |website=Bahamas Bureau of Standards and Quality |access-date=24 September 2021 |archive-date=2 June 2021 |archive-url=https://web.archive.org/web/20210602215910/https://www.bbsq.bs/en/files/acts-and-regulations/1-weights-and-measures-act/file |url-status=live }}</ref>

===Belize===
Both imperial units and metric units are used in [[Belize]]. Both systems are legally recognized by the National Metrology Act.<ref>{{cite web |title=National Metrology Act, Chapter 294, Revised Edition 2011 |url=https://bbs.gov.bz/wp-content/uploads/2016/11/Cap-294-National-Metrology-Act.pdf |publisher=Government of Belize |access-date=11 January 2024}}</ref>

===Myanmar===
{{Main|Myanmar units of measurement}}

According to the CIA, in June 2009, Myanmar was one of three countries that had not adopted the [[International System of Units|SI metric system]] as their official system of weights and measures.<ref>{{cite web |url=https://www.cia.gov/library/publications/the-world-factbook/appendix/print_appendix-g.html |title=The World Factbook, Appendix G: Weights and Measures |year=2010 |work=Web Pages |publisher=Central Intelligence Agency |access-date=10 May 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100528121337/https://www.cia.gov/library/publications/the-world-factbook/appendix/print_appendix-g.html |archive-date=28 May 2010 |df=dmy-all }}</ref>{{Unreliable source?|date=August 2023}} Metrication efforts began in 2011.<ref>{{cite news|last= Gyi|first= Ko Ko |others= Translated by Thit Lwin|date=18-24 July 2011|title= Ditch the viss, govt urges traders|department=Business and Property|url= http://www.mmtimes.com/2011/business/584/biz58401.html |url-status=dead|work=The Myanmar Times |location=Myanmar |archive-url=https://web.archive.org/web/20110920011617/http://www.mmtimes.com/2011/business/584/biz58401.html |archive-date=2011-09-20|access-date=2023-03-04}}</ref> The [[Government of Myanmar|Burmese government]] set a goal to metricate by 2019, which was not met, with the help of the [[Physikalisch-Technische Bundesanstalt|German National Metrology Institute]].<ref>{{cite news|url= http://mizzima.com/opinion/features/item/10955-metrication-in-myanmar |title=  Metrication in Myanmar |website= [[Mizzima News]] |first= Nicholas |last= Kohler |date= 3 March 2014 |archive-url= https://web.archive.org/web/20141216042534/http://mizzima.com/opinion/features/item/10955-metrication-in-myanmar |archive-date= 16 December 2014 |url-status= dead | access-date= 20 April 2015}}</ref>
===Other countries===
Some imperial measurements remain in limited use in [[Malaysia]], the [[Philippines]], [[Sri Lanka]] and [[South Africa]]. Measurements in feet and inches, especially for a person's height, are frequently encountered in conversation and non-governmental publications.

Prior to metrication, it was a common practice in Malaysia for people to refer to unnamed locations and small settlements along major roads by referring to how many miles the said locations were from the nearest major town. In some cases, these eventually became the official names of the locations; in other cases, such names have been largely or completely superseded by new names. An example of the former is Batu 32 (literally "Mile 32" in [[Malay language|Malay]]), which refers to the area surrounding the intersection between [[Malaysia Federal Route 22|Federal Route 22]] (the [[Tamparuli]]-[[Sandakan]] highway) and [[Malaysia Federal Route 13|Federal Route 13]] (the Sandakan-[[Tawau]] highway). The area is so named because it is 32 miles west of Sandakan, the nearest major town.

Petrol is still sold by the imperial gallon in [[Anguilla]], [[Antigua and Barbuda]], [[Belize]], [[Myanmar]], the [[Cayman Islands]], [[Dominica]], [[Grenada]], [[Montserrat]], [[St. Kitts and Nevis|St Kitts and Nevis]] and [[St. Vincent and the Grenadines]].{{cn|date=August 2023}} The [[United Arab Emirates]] Cabinet in 2009 issued the Decree No. (270 / 3) specifying that, from 1 January 2010, the new unit sale price for petrol will be the litre and not the gallon, which was in line with the UAE Cabinet Decision No. 31 of 2006 on the national system of measurement, which mandates the use of International System of units as a basis for the legal units of measurement in the country.<ref name="gas7">{{cite web|url=http://agriculture.gov.gd/newsitem.aspx?nid=375 |publisher=The Ministry of Agriculture, [[Government of Grenada]] |date=2004-11-01 |title=Address by Agriculture Minister Gregory Bowen |access-date=15 January 2008 |quote=The price of gasoline at the pumps was fixed at EC$7.50 per imperial gallon... |archive-url=https://web.archive.org/web/20080324183215/http://agriculture.gov.gd/newsitem.aspx?nid=375 |archive-date=24 March 2008 }}</ref><ref>{{cite web|url=http://mof.gov.bz/faqresults.asp?category=SUPPLIES+CONTROL&question=39 |title=FAQ |website=MoF.gov.bz |access-date=15 January 2008 |publisher=Belize Ministry of Finance |archive-url=https://web.archive.org/web/20080123210505/http://mof.gov.bz/faqresults.asp?category=SUPPLIES+CONTROL&question=39 |archive-date=2008-01-23 |quote=• Kerosene per US Gallon (per Imperial gallon) • Gasoline (Regular)(per imperial Gallon) • Gasoline (Premium) (per Imperial Gallon) • Diesel (per Imperial Gallon) }}</ref><ref name="gas5">{{cite web|url=http://www.antigua-barbuda.com/business_politics/budget_speeches/budget_speech_2001.asp |title=The High Commission Antigua and Barbuda |access-date=15 January 2008 |url-status=dead|archive-url=https://web.archive.org/web/20090131213551/http://www.antigua-barbuda.com/business_politics/budget_speeches/budget_speech_2001.asp |archive-date=31 January 2009}}</ref><ref>{{cite web|url=http://www.international-fuel-prices.com/downloads/FuelPrices2005.pdf |title=International Fuel Prices 2005 |website=International-Fuel-Prices.com |first=Gerhard P. |last=Metschies  |date=6 September 2005 |access-date=15 January 2008 |page=96 |publisher=German Technical Cooperation |archive-url=https://web.archive.org/web/20070207130929/http://www.international-fuel-prices.com/downloads/FuelPrices2005.pdf |archive-date=2007-02-07}}</ref> Sierra Leone switched to selling fuel by the litre in May 2011.<ref>{{cite web|publisher=[[Sierra Leone]] Embassy in the United States|url=http://embassyofsierraleone.net/node/54|title=Introduction of the Metric System and the Price of Petroleum Products|archive-url=https://web.archive.org/web/20150429165159/http://embassyofsierraleone.net/node/54|archive-date=29 April 2015|access-date=23 October 2011}}</ref>

In October 2011, the Antigua and Barbuda government announced the re-launch of the Metrication Programme in accordance with the Metrology Act 2007, which established the International System of Units as the legal system of units. The Antigua and Barbuda government has committed to a full conversion from the imperial system by the first quarter of 2015.<ref>{{cite news|title=Minister Lovell Addresses Metric Conversions |url=http://www.caribarena.com/antigua/news/economy/98673-minister-lovell-addresses-metric-conversions.html |newspaper=CARIBARENA Antigua |date=18 October 2011 |access-date=23 October 2011 |url-status=dead|archive-url=https://web.archive.org/web/20111020040638/http://www.caribarena.com/antigua/news/economy/98673-minister-lovell-addresses-metric-conversions.html |archive-date=20 October 2011}}</ref>