Convert acres to square meters
Converting acres to square meters is a common area task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 ac equals 4,046.86 m², the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert acres to square meters
To convert acres to square meters, multiply the number of acres by 4,046.86. For example, 10 ac × 4,046.86 = 40,468.6 m².
m² = ac × 4,046.86
- Write down the value in acres you want to convert.
- Multiply it by 4,046.86 (the exact ac→m² factor).
- The result is your value in square meters. Check it below with the converter or the table.
Conversion table
Common values of acres and their equivalents in square meters:
| ac | m² |
|---|---|
| 1 | 4,046.86 |
| 2 | 8,093.71 |
| 3 | 12,140.6 |
| 4 | 16,187.4 |
| 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 |
About these units
Acre (ac). An acre equals exactly 4,046.8564224 square meters, or 43,560 square feet. It is the traditional land unit in the US and UK, about 0.4 hectares.
Square Meter (m²). The square meter is the SI derived unit of area, a square with one-meter sides. Apartments, offices and building floor plans are measured in square meters.
Frequently asked questions
How do I convert acres to square meters?
To convert acres to square meters, multiply the number of acres by 4,046.86. For example, 10 ac × 4,046.86 = 40,468.6 m². Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many square meters are in 1 acre?
1 ac = 4,046.86 m². That is the fixed relationship used by this converter and by international standards.
How many acres are in 1 square meter?
1 m² = 0.000247105 ac. If you are converting in the opposite direction, use our Square Meter to Acre converter for the dedicated table and FAQ.
Is the acres to square meters conversion exact?
Yes. Both units are defined by international agreement, so the factor of 4,046.86 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is acre used for?
An acre equals exactly 4,046.8564224 square meters, or 43,560 square feet. It is the traditional land unit in the US and UK, about 0.4 hectares.