Paper Size Converter
Convert paper sizes A0 to A5, US Letter and Legal to square meters instantly - ideal for printing, design and office use.
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About Paper Size conversion
Paper sizes can be confusing when you switch between ISO A-series and US Letter/Legal. An A4 sheet is 210×297mm (0.0625 m²), exactly one sixteenth of an A0 (1 m²), while US Letter is 8.5×11 inches (0.0603 m²) and Legal is 8.5×14 inches (0.0785 m²).
This converter handles A0 through A5 plus Letter and Legal side by side, so you can instantly see how many A4s fit in an A0 or how Letter compares to A4 for printing and layout work.
Units supported: Square meter, A0 (841×1189mm), A1 (594×841mm), A2 (420×594mm), A3 (297×420mm), A4 (210×297mm), A5 (148×210mm), US Letter, US Legal.
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12 random - refresh for moreFrequently asked questions
What units can I convert with the Paper Size converter?
Square meter, A0 (841×1189mm), A1 (594×841mm), A2 (420×594mm), A3 (297×420mm), A4 (210×297mm), A5 (148×210mm), US Letter, US Legal.
How accurate is this paper size converter?
This converter uses standard international definitions for every paper size unit, so results are precise to several decimal places, accurate enough for cooking, travel, homework, or any everyday use.
Can I convert in both directions?
Yes, enter a value in either field and the other updates instantly. You can also tap the swap button to flip the two units, or use the copy-link button to share this exact conversion.