Acre to Square Mile
Convert ac to mi² instantly — free, no sign-up.
—
About the Acre (ac)
The Acre is historically the area a yoke of oxen could plow in a day, still the standard for land and farmland in the US and UK.
About the Square Mile (mi²)
The Square Mile is used for large land areas like counties and metropolitan regions, equal to 640 acres.
How to convert ac to mi²
- Enter the value in ac in the box above.
- The mi² equivalent updates instantly.
- Use the swap button to convert mi² back to ac just as easily.