Square Meter Calculator
Work out the area of a room, a flat or a whole house in square meters and square feet. Add each room by length and width; the total updates as you type.
Rooms (length × width)
- 20 m²
- 14 m²
- Total m²
- 34
- Total ft²
- 365.97
- Total yd²
- 40.6637
- Total acres
- 0.0084
- Total hectares
- 0.0034
Convert an area
- m²
- 100
- ft²
- 1,076.391
- yd²
- 119.599
- acres
- 0.0247
- hectares
- 0.01
How to calculate square meters
For a rectangular room, multiply the length by the width in metres: 5 m × 4 m = 20 m². If you measured in centimetres, divide each side by 100 first (500 cm × 400 cm = 5 m × 4 m). If you measured in feet, the calculator converts for you — or multiply square feet by 0.0929 to get square meters.
For L-shaped or irregular spaces, split the floor into rectangles and add each one as its own row. The total is the area of the whole space. Measure inside the walls for usable (carpet) area; measure to the outside of the walls for built-up area.
Area conversions at a glance
| 1 m² | 10.764 ft² |
| 1 ft² | 0.0929 m² |
| 1 m² | 1.196 yd² |
| 1 acre | 4,046.86 m² (43,560 ft²) |
| 1 hectare | 10,000 m² (2.471 acres) |
| 100 m² | 1,076.39 ft² |
| 1,000 ft² | 92.9 m² |
See the space, not just the number
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Common questions
How do I calculate square meters?
Multiply the length by the width, both in metres. A room 5 m long and 4 m wide is 20 m². If you measured in centimetres, divide each by 100 first.
How many square feet are in a square meter?
One square meter is about 10.764 square feet. One square foot is about 0.0929 m².
How do I measure an L-shaped room?
Split it into rectangles, add each as its own row in the calculator, and use the total. The same works for a whole flat or house.
Is built-up area the same as carpet area?
No. Carpet area is the usable floor inside the walls; built-up area adds the wall thickness and balconies. This calculator gives the area of what you measure — measure inside the walls for carpet area.
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