What Are the Dimensions of ISO A4 Paper Size?

Learn the exact size of ISO A4 paper, the international standard for documentation, measuring 210 mm by 297 mm (8.27 x 11.69 inches).

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The ISO A4 paper size measures 210 mm by 297 mm (about 8.27 inches by 11.69 inches). It is the standard paper size used internationally for documentation and printing, except in North America, where letter-sized paper is more common.

FAQs & Answers

  1. What are the exact dimensions of ISO A4 paper? ISO A4 paper measures 210 mm by 297 mm, which is approximately 8.27 inches by 11.69 inches.
  2. Why is ISO A4 paper size used internationally? ISO A4 is the international standard for printing and documentation because of its consistency and ease of scaling within the ISO A series of paper sizes.
  3. What paper size is commonly used in North America instead of A4? North America primarily uses letter-sized paper, which measures 8.5 inches by 11 inches, instead of A4.
  4. How does ISO A4 paper size compare to US letter size paper? ISO A4 paper is slightly longer and narrower than US letter paper, measuring 210 mm x 297 mm versus 8.5 in x 11 in.

Watch More

For more information on paper sizes and standards, check out our guides on ISO paper formats, the differences between A4 and letter size, and tips for printing documents correctly across regions.

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