What is A4 size in mm?

A4 paper: the most widely used paper size in Europe and Japan. Especially for printing paper, this size is very popular, because the dimensions of A4 paper are very user friendly and handy. However, our size of A4 paper is not used all over the world. In the USA, Canada and Mexico, for example, they use the US Letter. The sizes are slightly wider and shorter than A4-size paper. But what are the dimensions of A4 size in mm? You can read it below. We have an overview in millimetres also in inches and centimetres.

Dimensions A4 size in mm


width 297 mm x length 210 mm

Especially designers, graphic designers and other creatives often need the A4 size in millimetres. For example, when they start designing stationery, menus, magazine calendars or other resources in A4 size in design programs, such as InDesign. Therefore it is good to know that the A4 size in millimetres is 297 x 210 mm. Where the length is 297 millimetres and the width is 210 millimetres.

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A4 size millimetres

A4 size in millimetres with bleed area

Would you like to have your print file printed at a printer? Then one of the delivery specifications is often to use a bleed area of 3 mm (all around) in your print file. This changes the ‘gross’ size, so it is important that you do not forget this.

A bleed area of 3 mm means an extra 6 mm around your A4 paper size. Both in length and width. With an A4 this means that your net size is 297 x 210 mm. And the gross size (including bleed area) is 303 x 216 mm. Then the printer cuts away the bleed area, so that the background of your A4 flyer, menu card or calendar runs neatly to the edge.

Size Millimeter
4A0 1682 x 2378
2A0 1189 x 1682
A0 841 x 1189
A1 594 x 841
A2 420 x 594
A3 297 x 420
A4 210 x 297
A5 148 x 210
A6 105 x 148
A7 74 x 105
A8 52 x 74
A9 37 x 52
A10 26 x 37