Is A2 Paper Size Bigger Than A3? Dimensions and Comparison Explained

Discover why A2 is bigger than A3 paper size, including exact dimensions and how the A series paper sizes relate.

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A2 is bigger than A3. The A series paper sizes are all based on a single aspect ratio of 1:√2. Each size is halved to get the next size down. Therefore, A2 is one size larger than A3, meaning it has double the surface area of A3. The standard dimensions of A2 are 594 x 420 mm (or 23.4 x 16.5 inches), whereas A3 measures 420 x 297 mm (or 16.5 x 11.7 inches).

FAQs & Answers

  1. What are the exact dimensions of A2 and A3 paper? A2 paper measures 594 x 420 mm (23.4 x 16.5 inches), while A3 measures 420 x 297 mm (16.5 x 11.7 inches).
  2. Why is A2 paper bigger than A3? Because A series sizes are based on halving the previous size, A2 is one size larger than A3 and has double its surface area.
  3. What is the aspect ratio used for A series paper sizes? The A series paper sizes all use an aspect ratio of 1 to the square root of 2 (1:√2).
  4. How does the A series paper size system work? Each size in the A series is half the area of the previous size, obtained by folding or cutting the paper along the larger dimension.

Watch More

For more detailed insights on paper sizes, check out our guides on A4 and A5 dimensions and the logic behind the ISO 216 standard. These resources help you choose the right paper size for printing, design, or crafts.

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