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A4 Paper Size in Millimetres

The table below displays the paper size of A4 paper in millimetres.

Paper size Width Height
A4 210 mm 297 mm
Letter 216 mm 280 mm
Letter size = Canada and the United States of America.
A4 size = The rest of the world (United Kingdom, Australia, Germany, etc).

A4 Paper Size in mm

What are millimetres?

Millimetres are also known as mm and are part of the metric system of measurement.

Millimetres are one tenth of a centimetre and one thousandth of a metre.

Millimetres are most used for measuring small distances.