Editing Paper size (section)

===International raw sizes<span class="anchor" id="ISO 217"></span><span class="anchor" id="ISO 2784"></span>===

{| class="wikitable"
|+ ISO 217 raw and ISO 5457 untrimmed sheet sizes
|-
! Raw
! mm × mm !! inch × inch
! Special raw
! mm × mm !! inch × inch
! Untrimmed
! mm × mm !! inch × inch
! Trimmed
! mm × mm !! inch × inch
<!--! drawing area-->
! mm × mm !! inch × inch
|-
! RA0
| {{size|860|1220|p=4}}
! SRA0
| {{size|900|1280|p=4}}
! A0U
| {{size|880|1230|p=4}}
! A0T
| {{size|841|1189|p=4}}
| {{size|821|1159|p=4}}
|-
! RA1
| {{size|610|860|p=4}}
! SRA1
| {{size|640|900|p=4}}
! A1U
| {{size|625|880|p=4}}
! A1T
| {{size|594|841|p=4}}
| {{size|574|811|p=4}}
|-
! RA2
| {{size|430|610|p=4}}
! SRA2
| {{size|450|640|p=4}}
! A2U
| {{size|450|625|p=4}}
! A2T
| {{size|420|594|p=4}}
| {{size|400|564|p=4}}
|-
! RA3
| {{size|305|430|p=4}}
! SRA3
| {{size|320|450|p=4}}
! A3U
| {{size|330|450|p=4}}
! A3T
| {{size|297|420|p=4}}
| {{size|277|390|p=4}}
|-
! {{visible anchor|RA4}}
| {{size|215|305|p=4}}
! SRA4
| {{size|225|320|p=4}}
! A4U
| {{size|240|330|p=4}}
! A4T
| {{size|210|297|p=4}} 
| {{size|180|277|p=4}}
|}

ISO 5457 specifies drawing paper sizes with a trimmed size equal to the A series sizes from A4 upward. The untrimmed sizes are 3 to 4&nbsp;cm larger and rounded to the nearest centimetre. A0 through A3 are used in landscape orientation, while A4 is used in portrait orientation. Designations for pre-printed drawing paper include the base sizes and a suffix, either ''T'' for trimmed or ''U'' for untrimmed sheets.

The withdrawn standard ISO 2784 did specify sizes of continuous, fan-fold forms based upon whole inches as was common for paper in continuous lengths in automatic data processing (ADP) equipment. Specifically, {{convert|12|in|mm}} was considered an untrimmed variant of the A4 height of 297&nbsp;mm.

{| class="wikitable"
|+ ISO 2784:1974 correspondence for continuous ADP paper
!rowspan=2| Size 
!colspan=3| Acceptable equivalent 
!colspan=3| Direct equivalent 
! Exact size
!colspan=2| Gross size 
|-
! inch × inch !! mm × mm !!title="aspect ratio"| AR
! inch × inch !! mm × mm !!title="aspect ratio"| AR
! mm × mm
! mm × mm !! inch × inch
|-
! A4
| {{size|8|12|in|mm|f=4|ar=on}} || {{size|8+1/3|11+2/3|in|mm|f=4|ar=on}} || {{resx|210|297}} ||title="Gross width for A3 is 450 mm, intermediate gross widths of 375 mm and 400 mm have no ISO 216 equivalent" {{size|250|340|p=10}}
|-
! A5
| {{size|6|8|in|mm|f=4|ar=on}} || {{size|5+5/6|8+1/3|in|mm|f=4|ar=on}} || {{resx|148|210}} || {{size|180|250|p=10}}
|-
! A6
| {{size|4|6|in|mm|f=4|ar=on}} || {{size|4+1/6|5+5/6|in|mm|f=4|ar=on}} || {{resx|105|148}} || {{n/a}} || {{n/a}}
|-
! A7
| {{size|3|4|in|mm|f=4|ar=on}} || {{n/a}} || {{n/a}} || {{n/a}} || {{resx|74|105}} || {{n/a}} || {{n/a}}
|}