Convert square meters to acres
Converting square meters to acres is a common area task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 m² equals 0.000247105 ac, 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 square meters to acres
To convert square meters to acres, multiply the number of square meters by 0.000247105. For example, 10 m² × 0.000247105 = 0.00247105 ac.
ac = m² × 0.000247105
- Write down the value in square meters you want to convert.
- Multiply it by 0.000247105 (the exact m²→ac factor).
- The result is your value in acres. Check it below with the converter or the table.
Conversion table
Common values of square meters and their equivalents in acres:
| m² | ac |
|---|---|
| 1 | 0.000247105 |
| 2 | 0.000494211 |
| 3 | 0.000741316 |
| 4 | 0.000988422 |
| 5 | 0.00123553 |
| 10 | 0.00247105 |
| 20 | 0.00494211 |
| 25 | 0.00617763 |
| 50 | 0.0123553 |
| 100 | 0.0247105 |
| 250 | 0.0617763 |
| 500 | 0.123553 |
About these units
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.
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.
Frequently asked questions
How do I convert square meters to acres?
To convert square meters to acres, multiply the number of square meters by 0.000247105. For example, 10 m² × 0.000247105 = 0.00247105 ac. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many acres are in 1 square meter?
1 m² = 0.000247105 ac. That is the fixed relationship used by this converter and by international standards.
How many square meters are in 1 acre?
1 ac = 4,046.86 m². If you are converting in the opposite direction, use our Acre to Square Meter converter for the dedicated table and FAQ.
Is the square meters to acres conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.000247105 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is square meter used for?
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.