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Paper Size Reference

Look up paper dimensions in mm and inches

About Paper Sizes

The ISO 216 standard defines A and B series paper sizes used worldwide. The A series starts with A0 (1 m² area) and each subsequent size is half the previous one. A4 (210×297mm) is the most common for documents. The B series provides intermediate sizes.

North America uses Letter (8.5×11 inches), Legal (8.5×14 inches), and Tabloid (11×17 inches) formats. Our reference shows both metric and imperial dimensions.