Square Metre Calculator
Work out the area of a space in square metres.
Area
12m²
- In square feet
- 129.2 ft²
v1.0 · Reviewed September 2026
How this is worked out
Area is length × width, with a second line converting to square feet at 10.7639 ft² per m².
Worked example
- 4 m × 3 m
4 × 3
12 m², about 129.2 ft²
Assumptions and limits
- For rectangles. An L-shaped room needs splitting into rectangles and the areas adding.
- Both measurements must be in metres. Entering centimetres gives an answer 10,000 times too large.
- The Square Feet Calculator shows the same two figures with the imperial one first.