There thousands of formats of paper. And all of them don't have any sense to us, ordinary people. It is time to solve this problem once and for all.
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Paper Sizes — a website directory with all possible paper sizes.
There you will be able to find sizes and dimensions for all international paper sizes. You can add multiple sizes and compare them. Values can be displayed in millimeters, centimeters, meters, inches, pixels, points and many others.