Square Foot to Square Mile
Convert ft² to mi² instantly — free, no sign-up.
—
About the Square Foot (ft²)
The Square Foot is the standard unit for real estate listings and room sizes in the US.
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 ft² to mi²
- Enter the value in ft² in the box above.
- The mi² equivalent updates instantly.
- Use the swap button to convert mi² back to ft² just as easily.