Paper Size Converter
Convert between paper sizes and compare dimensions
Our free online paper size converter supports 11 different units with instant, accurate results. All conversion factors are based on definitions from the International Bureau of Weights and Measures (BIPM) and verified against NIST standards. Results are accurate to 6 or more decimal places.
Popular Paper Size Conversions
All Paper Size Conversions
Convert Paper Size Units
Convert from A0 (A0)
Convert from A1 (A1)
Convert from A2 (A2)
Convert from A3 (A3)
Convert from A4 (A4)
Convert from A5 (A5)
Convert from A6 (A6)
Convert from US Letter (Letter)
Convert from US Legal (Legal)
Convert from Tabloid/Ledger (Tabloid)
Convert from Executive (Executive)
Last updated: November 27, 2025