Square Footage Calculator
Multiply length × width to find square feet for any rectangular area.
Multiply length × width to find square feet for any rectangular area.
Length × Width = Square feet. Enter both measurements in feet. Decimals like 12.5 are fine.
| Length | Width | Square feet |
|---|---|---|
| 10 ft | 10 ft | 100 sq ft |
| 12 ft | 10 ft | 120 sq ft |
| 15 ft | 20 ft | 300 sq ft |
Feet. If you have inches, divide by 12 first or use the feet-to-inches converter.
Yes — for volume, also use the Concrete Bag Calculator.
Yes — 12.5 ft by 8.75 ft works fine.
Results are estimates for planning purposes. Verify with product labels and local requirements before purchasing materials.