Skip to content
Tool

Paper Size Converter

Enter a size name or a set of dimensions and get all the other representations: millimetres, centimetres, inches, points, picas and pixels at any resolution, plus the nearest named size.

Common Conversions

Sizemmcminchespointspx @ 300
A4210 × 29721.0 × 29.78.27 × 11.69595 × 8422480 × 3508
A3297 × 42029.7 × 42.011.69 × 16.54842 × 11913508 × 4961
A5148 × 21014.8 × 21.05.83 × 8.27420 × 5951748 × 2480
Letter215.9 × 279.421.6 × 27.98.5 × 11612 × 7922550 × 3300
Legal215.9 × 355.621.6 × 35.68.5 × 14612 × 10082550 × 4200
Tabloid279.4 × 431.827.9 × 43.211 × 17792 × 12243300 × 5100

How the Conversion Works

One millimetre is 1/25.4 of an inch, so each unit here comes from the millimetre figure by a fixed factor. Pixels depend on resolution: at 300 DPI an inch is 300 pixels, so A4's 297 mm height is 297 ÷ 25.4 × 300 = 3508 pixels. Points are 1/72 inch; a pica is twelve points. The full formula list is on the editorial process page.

Conversions computed by formula, not stored. Factors per the editorial process page. Last verified . Editorial Process →