Paper Sizes Guide and Conversion tool

ISO paper standards are widely used throughout printing. Originally for the litho and screen print industries where sizes need to be fixed, they are now used extensively in the large format digital printing market. One difference is many large format digital printers use rolls rather than sheets of paper. But graphics in products such as poster frames, billboards, pavement signs and Poster Frames come in popular set sizes, usually from the A or B series. European displays are metric where in the UK we still have imperial sizes such as 20" x 30".

Paper Size Calculator

Select your size and units in the drop downs below and the dimensions in the paper size calculator will update automatically.

Paper and Poster Size Tables

A Series Paper Sizes Table:

Magnification factors between all A sizes:

from vto > A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A0 100% 71% 50% 35% 25% 18% 12.5% 8.8% 6.2% 4.4% 3.1% A1 141% 100% 71% 50% 35% 25% 18% 12.5% 8.8% 6.2% 4.4% A2 200% 141% 100% 71% 50% 35% 25% 18% 12.5% 8.8% 6.2% A3 283% 200% 141% 100% 71% 50% 35% 25% 18% 12.5% 8.8% A4 400% 283% 200% 141% 100% 71% 50% 35% 25% 18% 12.5% A5 566% 400% 283% 200% 141% 100% 71% 50% 35% 25% 18% A6 800% 566% 400% 283% 200% 141% 100% 71% 50% 35% 25% A7 1131% 800% 566% 400% 283% 200% 141% 100% 71% 50% 35% A8 1600% 1131% 800% 566% 400% 283% 200% 141% 100% 71% 50% A9 2263% 1600% 1131% 800% 566% 400% 283% 200% 141% 100% 71% A10 3200% 2263% 1600% 1131% 800% 566% 400% 283% 200% 141% 100%

Common large format printing printing terms:

Double Quad Crown  60 x 40" Elephant  28 x 23" Quad Demy  45 x 35"  Super Royal  27 1⁄2 x 20 1⁄2" Quad Crown  40 x30"  Double Foolscap  27 x 17" Double Demy  35 x 22 1⁄2"  Royal  25 x 20" Quad Foolscap  34 x 27"  Medium  23 x 18" Double Large Post  33 x 21"  Demy  22 1⁄2 x 17 1⁄2"  Double Post  31 1⁄2 x 19 1⁄2"  Music Demy  20 x 15 1⁄2"  Imperial  30 x 22"  Crown  20 x 15"  Double Crown  30 x 20" Post  19 1⁄4 x 15 1⁄2"  - - Foolscap  17 x 13 1⁄2"