Editing Barn (unit) (section)

===SI units with prefix===
In SI, one can use units such as square femtometers (fm<sup>2</sup>). The most common SI prefixed unit for the barn is the femtobarn, which is equal to a tenth of a square zeptometer. Many scientific papers discussing high-energy physics mention quantities of fractions of femtobarn level.

{|
| style="vertical-align:top" | 
{|class="wikitable"
|+Conversion from SI units
|-
! SI
! style="width:2in" | barns
|-
| 1&nbsp;pm<sup>2</sup>
| 10&nbsp;kb
|-
| 1&nbsp;fm<sup>2</sup> 
| 10&nbsp;mb
|-
| 1&nbsp;am<sup>2</sup>
| 10&nbsp;nb
|-
| 1&nbsp;zm<sup>2</sup> 
| 10&nbsp;fb
|-
| 1&nbsp;ym<sup>2</sup> 
| 10&nbsp;zb
|-
| 1&nbsp;rm<sup>2</sup> 
| 10&nbsp;rb
|}
|
{|class="wikitable"
|+Conversion to SI units
|-
! Barns
! SI
! Other names
|-
| 1&nbsp;b
| 100&nbsp;fm<sup>2</sup>
|-
| 1&nbsp;cb
| 1&nbsp;fm<sup>2</sup>
|-
| 1&nbsp;mb
| 0.1&nbsp;fm<sup>2</sup> = 100000&nbsp;am<sup>2</sup>
|-
| 1&nbsp;μb
| 100&nbsp;am<sup>2</sup>
| Outhouse <ref>
{{cite web
 | author = Craig A. Stone, Ph.D.
 | title = Glossary
 | url = http://www.nuclearglossary.com/abcs/nuclearglossary_B.html
 | work = The Language of the Nucleus
 | publisher = Scientific Digital Visions, Inc
 | archive-url = https://web.archive.org/web/20070630125216/http://www.nuclearglossary.com/abcs/nuclearglossary_B.html
 | access-date = 2022-11-22
| archive-date = 2007-06-30
 }} </ref>
|-
| 1&nbsp;nb
| 0.1&nbsp;am<sup>2</sup> = 100000&nbsp;zm<sup>2</sup>
|-
| 1&nbsp;pb
| 100&nbsp;zm<sup>2</sup>
|-
| 1&nbsp;fb
| 0.1&nbsp;zm<sup>2</sup> = 100000&nbsp;ym<sup>2</sup>
|-
| 1&nbsp;ab
| 100&nbsp;ym<sup>2</sup>
|-
| 1&nbsp;zb
| 0.1&nbsp;ym<sup>2</sup> = 100000&nbsp;rm<sup>2</sup>
|-
| 1&nbsp;yb
| 100&nbsp;rm<sup>2</sup>
| Shed
|}
|}