Area Converter
Convert
Enter a value and pick the source and target units; the result updates live.
Area is a measure of two-dimensional extent. The SI unit is the square metre (m²); other common units include hectares, acres and square miles for land, and mm²/in² for cross-sections.
Area conversions are "squared" — a factor of 10 in length is a factor of 100 in area. This matters when converting a wire's diameter (mm) to its cross-sectional area (mm²) for current-carrying capacity, or when comparing land plots in acres vs. hectares.
Common applications
Converting a wire's diameter to cross-sectional area; comparing land in acres vs. hectares; reading a PCB pad area in mm² vs. in².
Frequently asked questions
The square metre (m²).
1 acre ≈ 4046.86 m².
Because area is length × length. A 10× length change is a 100× area change.