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Paper Sizes and Formats Explained

What size is A4 paper? And A3 and A5 and A0 for that matter! The most common paper sizes used in the UK for printing and stationery are named using the letter A, also known as International Paper Sizes. The range begins with tiny A10 (37mm x 26mm) and goes all the way through to the mighty A0 (1189mm x 841mm).

Guidance of paper sizes

What size is A5 paper?

Portrait: 210mm (height) x 148.5mm (width)
Landscape: 148.5mm (height) x 210mm (width)
Note: 148mm is also an acceptable height/width for printing on A5 paper

What size is A4 paper?

Portrait: 297mm (height) x 210mm (width)
Landscape: 210mm (height) x 297mm (width)

What size is A3 paper?

Portrait: 420mm (height) x 297mm (width)
Landscape: 297mm (height) x 420mm (width)

What size is A2 paper?

Portrait: 594mm (height) x 420mm (width)
Landscape: 420mm (height) x 594mm (width)

What size is A1 paper?

Portrait: 841mm (height) x 594mm (width)
Landscape: 594mm (height) x 841mm (width)

What size is A0 paper?

Portrait: 1189mm (height) x 841mm (width)
Landscape: 841mm (height) x 1189mm (width)

A4 Paper Size

A Series

Format Size in Millimeters Size in
A0 841 × 1189 33.1 × 46.8
A1 594 × 841 23.4 × 33.1
A2 420 × 594 16.5 × 23.4
A3 297 × 420 11.7 × 16.5
A4 210 × 297 8.3 × 11.7
A5 148 × 210 5.8 × 8.3
A6 105 × 148 4.1 × 5.8
A7 74 × 105 2.9 × 4.1
A8 52 × 74 2.0 × 2.9
A9 37 × 52 1.5 × 2.0
A10 26 × 37 1.0 × 1.5

Something to think about

Which paper type you use really depends on your usage. Many of local office supply stores carry different types of paper regardless of the country. It is time and cost saving with correct size.

In view of environmental protection, consider carefully before you print out.

Please pay attention to weemay.com for updated news

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