Square Feet Calculator
Calculate area in square feet from length and width.
Area
129.2ft²
- Area
- 12 m²
v1.0 · Reviewed September 2026
How this is worked out
Length × width in metres gives the area, converted to square feet at 10.7639 ft² per m².
Worked example
- 4 m × 3 m
12 m² × 10.7639
129.2 ft²
Assumptions and limits
- Inputs are in metres, not feet, so measure in metres or convert first.
- For rectangles only.
- The Square Metre Calculator gives the same result with the metric figure first.