# A1 size in centimetres

The A1 paper size in cm is 59.4 x 84.1 cm. The A series starts with A1. An A1 is one square meter. An A1 is half of an A1. The area of an A1 is, therefore, half a square meter. The length to width ratio of an A1 and all sizes in the A series are √2:1. The ratio between the long side and short side of a size from the A series is the width (B) = length (L)/2. For more information see also What is A1 size in cm?

Using the calculator below you can calculate the A1 size in centimetres. Besides calculating A1 sizes in centimetres, you can also calculate the other A sizes with this calculator, in various units. Select the A size and then choose the desired unit. The result will be shown undersize.

### Overview A-size in centimetres

Overview of A1 size in centimetres (cm).

Size Centimeter
4A0 168.2 x 237.8
2A0 118.9 x 168.2
A0 84.1 x 118.9
A1 59.4 x 84.1
A2 42.0 x 59.4
A3 29.7 x 42.0
A4 21.0 x 29.7
A5 14.8 x 21.0
A6 10.5 x 14.8
A7 7.4 x 10.5
A8 5.2 x 7.4
A9 3.7 x 5.2
A10 2.6 x 3.7

### Other units such as millimetres, pixels and metres.

Choose from the units below for the A1 size in Micrometres (μm), Millimetres (mm), Meters (m), Thou (th), Inches (in), Feet (ft), Yards (yd), Pixels, Pica, Point and HPGL.