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Paper Size Lookup Calculator

Enter a paper size name to see its dimensions.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

The ISO 216 standard defines the A series — A0 has an area of exactly 1 m², and each subsequent size (A1, A2, A3, A4 = 210×297 mm...) is half the area of the one before — along with the related B and C series, used almost everywhere outside North America. The US paper sizes (Letter 8.5×11 in, Legal 8.5×14 in, Tabloid 11×17 in) instead follow the ANSI/ASME Y14.1 standard.

This lookup returns the exact millimeter and inch dimensions and aspect ratio for any of these standard sizes. It's a reference used by graphic designers, print shops, and office workers preparing documents, templates, or print jobs for the correct regional paper standard.

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