Paper Size Calculator
Get the dimensions and area of standard paper sizes.
Quick answer: enter your details below and click Show Paper Size — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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Enter your details below.
How to use
- Choose a paper size.
- Click Show Paper Size.
- Read the dimensions in millimetres and inches, plus the area.
About this tool
Choose a paper size and the tool gives its width, height, and area. A-series sizes follow a neat rule: each size is half the previous one, so A4 is half of A3, and the whole series keeps the same shape. Letter and Legal are the common North American sizes.
Frequently asked questions
Is Letter the same as A4?
No. Letter is 216 by 279 millimetres, slightly wider and shorter than A4's 210 by 297.
What is Legal paper?
A North American size, 216 by 356 millimetres — the same width as Letter but longer.