maratoolHow to convert square feet to square meters (and any area unit)
Pick two area units, type a value — the exact conversion appears instantly.
Real-estate listings mix square feet, square meters, and acres freely. The Area Converter converts between all common area units using exact NIST SP 811 factors — entirely in your browser.
How it works
- Pick units — "Square foot (ft²)" to "Square meter (m²)", or any other pair.
- Type a value — the result updates as you type, with swap and copy.
- Copy — one click, with "Copied!" feedback.
Area conversion factors
Every unit converts through the square meter (the base unit). To convert A → B, multiply by A's factor and divide by B's:
| Unit | = this many square meters |
|---|---|
| Square kilometer (km²) | 1,000,000 |
| Square meter (m²) | 1 |
| Square centimeter (cm²) | 0.0001 |
| Square millimeter (mm²) | 1.0000 × 10^-6 |
| Hectare (ha) | 10,000 |
| Acre (ac) | 4,046.8564224 |
| Square mile (mi²) | 2,589,988.110336 |
| Square yard (yd²) | 0.83612736 |
| Square foot (ft²) | 0.09290304 |
| Square inch (in²) | 0.00064516 |
When you need it
Use it when comparing property listings across countries (ft² vs m²), sizing land parcels (acres vs hectares), or checking construction plans. Because the foot is defined as exactly 0.3048 m, every factor in the table above is exact — no rounding error accumulates.
Sources & methodology
Conversion factors follow NIST Special Publication 811; exact-by-definition factors are marked in the tool itself. All math runs client-side in your browser — nothing is uploaded.
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