What is A1 size in inches?

To know exactly an A1 size in inches, you can apply the following formula: 1 millimetre is 0.0393701 inch. A1 size in millimetres is 594 x 841 millimetres. To answer the question “What is A1 size in inches?”, we need to multiply the number of millimetres by 0.0393701 inches. The result of this calculation is the following:

Millimetres to inches

594 mm x 0.0393701 inch = 23.386 inch

841 mm x 0.0393701 inch = 33.110 inch

An A1 size in inches is 23.386 x 33.110 inches.

Rounded to 2 decimals this is 23.39 x 33.11 inches.

Inches to millimetres

23.386 inch / 0.0393701 inch = 594 mm

33.110 inch / 0.0393701 inch = 841 mm

An A1 size in millimeters is 594 x 841 mm.

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Table with A1 size in inches

Size Inches
4A0 66.220 x 93.622
2A0 46.811 x 66.220
A0 33.110 x 46.811
A1 23.386 x 33.110
A2 16.535 x 23.386
A3 11.693 x 16.535
A4 8.268 x 11.693
A5 5.827 x 8.268
A6 4.134 x 5.827
A7 2.913 x 4.134
A8 2.047 x 2.913
A9 1.457 x 2.047
A10 1.024 x 1.457

American paper sizes

American paper sizes are based on inches. Elsewhere around the world, the ISO 216 standard is often used. The American paper sizes Letter, Legal and Ledger, are indicated in inches.

An inch is a measure of length used in English-speaking countries. The unit symbol of inch is in or ″. An inch is by definition exactly equal to 24.4 mm. The length of an inch is approximately equal to the width of the upper phalanx of the finger of an adult male.

Other units

To display the A1 size in millimetres and centimetres, please refer to the pages: A1 size in mm and A1 size in cm.