Acres to square meters
Type a value in acres to see it in square meters straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the acres box.
- Read the result in square meters as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
m² = ac × 4,046.856422
Multiply the value in acres by 4,046.856422 to get square meters.
Example
To convert 25 ac to square meters: 25 × 4,046.856422 = 101,171 m².
Conversion table
| Acres (ac) | Square meters (m²) |
|---|---|
| 1 | 4,046.86 |
| 2 | 8,093.71 |
| 3 | 12,140.6 |
| 5 | 20,234.3 |
| 10 | 40,468.6 |
| 20 | 80,937.1 |
| 25 | 101,171 |
| 50 | 202,343 |
| 100 | 404,686 |
| 250 | 1,011,710 |
| 500 | 2,023,430 |
| 1,000 | 4,046,860 |
About the units
- Acre
- The international acre is 43,560 square feet, exactly 4046.8564224 square meters, used for land in the US and UK.
- Square meter
- The SI unit of area, equal to the area of a square with sides of one meter.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many square meters are in one acre?
1 ac = 4,046.86 m² exactly.
How do I convert acres to square meters?
Use m² = ac × 4,046.856422. For example, 25 ac = 101,171 m².
How many acres are in one square meter?
1 m² = 0.000247105 ac.
How do I convert square meters to square feet?
Divide the square meters by 0.09290304, or multiply by about 10.7639. The factor is exact because a foot is exactly 0.3048 m.
Are the dunam, feddan and acre the same size?
No. A metric dunam is 1000 m², an Iraqi dunam 2500 m², an Egyptian feddan about 4200.83 m² and an acre 4046.8564224 m².