Quick Answer: Square Feet to Square Meters
One square foot is approximately 0.0929 square meters (1 ft² ≈ 0.0929 m²).
Conversely, 1 m² ≈ 10.76 ft².
Formula: m² = ft² × 0.09290304
Worked examples
- 10 ft² ≈ 0.929 m²
- 50 ft² ≈ 4.645 m²
- 100 ft² ≈ 9.29 m²
Method and limitations
To convert square feet to square meters, multiply the square feet value by 0.09290304. This is derived from the linear conversion (1 ft = 0.3048 m) squared. Calculations use full-precision constants; answers in this box are rounded for readability (≈ marks a rounded value) and the calculator shows up to 9 significant figures.
Each factor is exact by definition, derived from exact definitions, or a documented conventional value — see the methodology and sources.
Conversion Formula
To convert square feet to square meters, multiply the square feet value by 0.09290304. This is derived from the linear conversion (1 ft = 0.3048 m) squared.
Area is one input, not an answer
The conversion is exact: 1 ft² = 0.09290304 m². For rooms and floor plans, convert the final area rather than rounded side lengths, and check whether a listing quotes gross or net area.
For a solar assessment, roof area in m² does not determine output on its own. Usable area, orientation, tilt, shading, panel dimensions and rating, and local yield all matter. The solar payback calculator and the Solar guide take those inputs; for heating and insulation decisions, see the Home Energy guide.
Constants and their sources are listed on the methodology page.
Complete Guide to Square Feet to Square Meters Conversion
What is a square foot?
A square foot (ft²) is the area of a square one international foot (0.3048 m) on each side. It is used for floor area in the US and, alongside m², in UK property listings.
What is a square meter?
A square meter (m²) is the SI unit of area, a square one metre on each side. It is the standard unit for floor, plan and roof area in most countries.
How the Conversion Works
Since 1959 the international foot is exactly 0.3048 m, so 1 ft² = 0.3048 × 0.3048 = 0.09290304 m² exactly. Multiply square feet by 0.09290304, or divide by 10.7639104.
Why This Conversion Matters
Floor and roof areas move between plans, listings and calculators that use different units. The conversion is exact; the measurement convention behind the number is what needs checking.
Scientific Context
Area scales with the square of length, so a 1% error in a measured side becomes about a 2% error in area.
Step-by-Step Conversion Guide
Follow these steps to convert square feet to square meters manually:
Start with your value in square feet
Example: You want to convert 100 ft²
Apply the conversion formula
Use the formula: m² = ft² × 0.09290304
Calculate the result
100 ft² = 9.2903 m²
Verify your answer
Use our calculator above to double-check your manual calculation.
Quick Mental Math Tip
Divide by 10.764 (or by 10 and subtract about 7%): 500 ft² ≈ 50 − 3.5 = 46.5 m² (exact: 46.4515).
Common Conversions
| Square Feet (ft²) | Square Meters (m²) | Square Meters → Square Feet |
|---|---|---|
| 10 ft² | 0.92903 | 10 m² = 107.639 ft² |
| 50 ft² | 4.64515 | 50 m² = 538.196 ft² |
| 100 ft² | 9.2903 | 100 m² = 1,076.39 ft² |
| 120 ft² | 11.1484 | 120 m² = 1,291.67 ft² |
| 200 ft² | 18.5806 | 200 m² = 2,152.78 ft² |
| 500 ft² | 46.4515 | 500 m² = 5,381.96 ft² |
| 1000 ft² | 92.903 | 1000 m² = 10,763.9 ft² |
| 1500 ft² | 139.355 | 1500 m² = 16,145.9 ft² |
| 2000 ft² | 185.806 | 2000 m² = 21,527.8 ft² |
| 5000 ft² | 464.515 | 5000 m² = 53,819.6 ft² |
Did You Know?
Area conversions are non-linear: doubling the length of each side of a square quadruples its area, which is why area unit ratios are always squared.
Popular Square Feet to Square Meters Conversions
Tap any value to load it into the calculator above.
When You'll Need This Conversion
Room and floor area
Convert room dimensions or floor plans measured in feet into m² for flooring, paint or heating calculations.
Property listings
Compare listings that quote ft² and m² — after checking that both use the same measurement convention.
Roof area
Express roof or plan area in m² as one input to a solar or insulation assessment.
Pro Tips for Accurate Conversions
Area factors are squared
1 ft = 0.3048 m, so 1 ft² = 0.3048² m² = 0.09290304 m².
Convert the final area, not rounded sides
Rounding each side before multiplying compounds the rounding error.
Common Mistakes to Avoid
Using the linear factor for area
Multiplying ft² by 0.3048 gives a result 3.28 times too large, because the length factor has not been squared.
Multiply ft² by 0.09290304.
Treating roof area as usable solar area
Edges, vents, shading and orientation reduce the area where panels can go and how much they produce.
Use area as one input alongside orientation, tilt, shading, panel size and local yield.
Frequently Asked Questions
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Conversion factors on this page are either exact by definition, derived from exact definitions, or conventional values in documented use. Each is listed with its source in our conversion methodology and sources, which cites the BIPM SI Brochure, NIST Special Publication 811 and the relevant IEC or national standards. Results are rounded for display only; calculations use full precision.