Quick answer: square meters = length (m) × width (m). 1 m² = 10.764 sq ft. A 12 × 15 ft room is 180 sq ft = 16.72 m².
How to calculate square meters
- Measure the length and width (in meters, or any unit; the calculator converts).
- Multiply length × width. In meters, the answer is in m².
- From square feet: × 0.09290304. From cm²: ÷ 10,000.
Example: 12 × 15 ft = 180 sq ft, and 180 × 0.09290304 = 16.72 m².
Square meter conversions
| 1 square meter equals | Value |
|---|---|
| Square feet | 10.7639 |
| Square yards | 1.19599 |
| Square inches | 1,550.0 |
| Square centimeters | 10,000 |
The factors follow from 1 ft = 0.3048 m exactly (international foot), as published by NIST.
Frequently asked questions
How do I calculate square meters?
Multiply the length by the width, both in meters. A room 4 × 5 m is 20 m². If you measured in centimeters, divide each by 100 first (400 × 500 cm = 4 × 5 m).
How do I convert square feet to square meters?
Multiply square feet by 0.09290304 (exact), or divide by 10.7639. 180 sq ft is 16.72 m².
How many square feet are in a square meter?
About 10.764 (10.7639104 to seven decimals), because a meter is 3.28084 ft and 3.28084² is 10.764.
How do I measure a room in square meters?
Measure wall to wall at floor level, the longest way and across. Split L-shaped rooms into rectangles and add them with “+ Add another area”.
How many square meters are in a hectare?
10,000. A hectare is 100 m × 100 m, about 2.471 acres.
Is this square meters calculator free to use online?
Yes. The CalcWall Square Meters Calculator is completely free and works online in any browser, on a phone, tablet or computer. There is nothing to download and no account to create, and the math runs right in your browser, so results appear as you type.