800.319.6217 or 916.933.6217

International Standard: ISO 216 (metric-based papers)

The International Standard ISO 216 is a paper size standard that has been adopted by majority of the countries of the world. It is a metric-based system with a consistent ratio (1:1.4142) so that each size can be divided evenly into smaller half sheets.The benefit is that printed materials can easily be reproduced in different sizes without having to crop or change the layout of the item being printed.This optimizes the printer's costs by allowing them to use the the entire parent sheet and prevents excess paper from being wasted.

A series
– These sizes are the most commonly used for business documents and everyday use.

B Series
– These sizes are often used for posters, books, envelopes, and passports.

C Series
– These sizes are used for constructing envelopes as they are slightly larger than the A series so that a C4 envelope with fit an A4 piece of paper for example.

International Paper Sizes






Format Metric Inches No Flap Biodegradable No Flap Flap Seal Biodegradable Flap Seal Protective Closure Hanging
A0 841 x 1189 33.1 x 46.8 - - B4735* - - -
A1 594x841 23.4x33.1 - - BA1 - BA1PC -
A2 420x594 16.5x23.4 - - BA2 - BA2PC -
A3 297x420 11.7x16.5 - - BA3 - BA3PC -
A4 210x297 8.3x11.7 - - BA4 - BA4PC HBA4
A5 148x210 5.8x8.3 - - BA5S - BA5SPC -
A6 105x148 4.1x5.8 - - BA6S - BA6SPC -
A7 74x105 2.9x4.1 B34CNF - B34 - - HB34
A8 52x74 2x2.9 - - B23 - - HB23
A9 37x52 1.5x2 - - - - - -
A10 26x37 1x1.5 - - - - - -
B0 1000x1414 39.4x55.7 - - B6040** - - -
B1 707x1000 27.8x39.4 - - B4432** - - -
B2 500x707 19.7x27.8 - - B2028 - - -
B3 353x500 13.9x19.7 - - - - - -
B4 250x353 9.8x13.9 - - - - - -
B5 176x250 6.9x9.8 - - B711* - - -
B6 125x176 4.9x6.9 B75NF GR75NF B75S - B75SPC HB75
B7 88x125 3.5x4.9 - - B35 - - -
B8 62x88 2.4x3.5 B23CNF - B2XL - - HB23
B9 44x62 1.7x2.4 - - - - - -
B10 31x44 1.2 x 1.7 - - - - - -
C0 917x1297 36.1x51.1 - - B6040** - - -
C1 648x917 25.5x36.1 - - B36* - - -
C2 458x648 18x25.5 - - - - - -
C3 324x458 12.8x18 - - - - - -
C4 229x324 9x12.8 - - B913 - - HB913
C5 162x229 6.4x9 - - B610* - - HB610*
C6 114x162 4.5x6.4 - - B56M - - HB56
C7 81x114 3.2x4.5 - - B3X6* - - -
C8 57x81 2.2x3.2 B2NF - B2 - B2PC HB2
C9 40x57 1.6x2.2 - - B1X2XL* - - -
C10 28x40 1.1x1.6 B1X2NF - - - - -

*The width fits, but the length is longer. Simply fold the adhesive flap down and seal it lower on the bag to create a snug fit.

**The width and the length is longer. Fold the adhesive flap down and seal it lower on the bag. Then fold and tape the excess width to make a snug fit.