Standard Paper and Envelope Sizes

A Series

A01189 x 841 mm
A1841 x 594 mm
A2594 x 420 mm
A3420 x 297 mm
A4297 x 210 mm
DL210 x 99 mm
A5210 x 148 mm
A6148 x 105 mm
A7105 x 74 mm
A874 x 52 mm

The ‘A Series’ of paper sizes are commonly used throughout the world apart from in the US and Canada. A sheet of A0 has an area of one square metre. This is where a paper’s weight (gsm) is calculated. The length divided by the width is 1.4142.

ISO A Series Paper Sizes

RA Series

RA01200 x 860 mm
RA1860 x 610 mm
RA2610 x 430 mm
RA3430 x 305 mm
RA4305 x 215 mm

RA is an ‘untrimmed’ paper size used for commercial printing. RA stands for ‘Raw format A’ and is defined as being 105% the size of ‘A Series’.

ISO RA Series Paper Sizes

SRA Series

SRA01280 x 900 mm
SRA1900 x 640 mm
SRA2640 x 450 mm
SRA3450 x 320 mm
SRA4320 x 225 mm

SRA is an ‘untrimmed’ paper size used for commercial printing. SRA stands for ‘Supplementary Raw format A’ and is defined as being 115% the size of ‘A Series’.

ISO SRA Series Paper Sizes

B Series

B01000 x 1414 mm
B1707 x 1000 mm
B2500 x 707 mm
B3353 x 500 mm
B4250 x 353 mm
B5176 x 250 mm
B6125 x 176 mm
B788 x 125 mm
B862 x 88 mm
ISO B Series Paper Sizes

C Envelope Series

C3324 x 458 mm
C4229 x 324 mm
C5162 x 229 mm
C6114 x 162 mm
ISO C Series Envelope

North American

Half Letter140 x 216 mm5.5 x 8.5 in
Letter216 x 279 mm8.5 x 11 in
Legal216 x 356 mm8.5 x 14 in
Junior Legal127 x 203 mm5 x 8 in
Ledger/Tabloid279 x 432 mm11 x 17 in
American

US ANSI

ANSI A216 x 279 mm8.5 x 11 in
ANSI B279 x 432 mm11 x 17 in
ANSI C432 x 559 mm17 x 22 in
ANSI D559 x 864 mm22 x 34 in
ANSI E864 x 1118 mm44 x 34 in
ANSI

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