Convert Square meters to Acres
1 square meter is 0.0002471 ac. One square meter is exactly 0.000247105381467 acres.
One square meter is 2.4711 × 10^-4 acres. To convert square meters to acres, multiply by 2.4711 × 10^-4; to go the other way, divide by 2.4711 × 10^-4 or multiply by 4046.8564. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Office of Weights and Measures. A meter on a side, and about 10.764 square feet.
Factor checked against the defining standard · How we check
- Square meters × 2.4711 × 10^-4
1 * 0.00024710 ac
1 square meter in every area unit
| Unit | Value | Exact factor |
|---|---|---|
| square inches | 1,550.0031 sq in | × 1,550.00310001 |
| square feet | 10.76391042 sq ft | × 10.7639104167 |
| square yards | 1.195990046 sq yd | × 1.1959900463 |
| acres | 0.0002471053815 ac | × 0.000247105381467 |
| square meters (as entered) | 1 m² | — |
| square millimetres | 1,000,000 mm² | × 1,000,000 |
| square centimetres | 10,000 cm² | × 10,000 |
| square kilometres | 0.000001 km² | × 0.000001 |
| square miles | 0.0000003861021585 mi² | × 0.000000386102158542 |
| hectares | 0.0001 ha | × 0.0001 |
Factors are entered by hand from NIST Office of Weights and Measures rather than derived from a units library, so the ones that terminate are exact rather than rounded.
The same converter answers this pair however it is written: square metres to acres is the British spelling of the same units — the metre and the litre are spelled that way outside the United States and the quantity does not change, and sqm to ac is how the symbols are typed on a keyboard with no superscript on it.
How do you convert square meters to acres? The converter and the working
- 1.Take the measurement in square meters.
- 2.Multiply by 2.4711 × 10^-4 — that is how many acres fit in one square meter.
- 3.To go back the other way, divide by 2.4711 × 10^-4, or multiply by 4046.8564.
Worked example: 25 square meters to acres
- Formula
- m² × 2.4711 × 10^-4 = ac
- Arithmetic
- 25 × 2.4711 × 10^-4 = 0.01 ac
- Answer
- 25 m² = 0.01 ac
The factor is rounded for display; the figure above is computed from the full value.
Square meters to acres conversion table
| Square meters | Acres |
|---|---|
| 1 m² | 0.0002471 ac |
| 2 m² | 0.0004942 ac |
| 3 m² | 0.0007413 ac |
| 4 m² | 0.0009884 ac |
| 5 m² | 0.001236 ac |
| 6 m² | 0.001483 ac |
| 7 m² | 0.00173 ac |
| 8 m² | 0.001977 ac |
| 9 m² | 0.002224 ac |
| 10 m² | 0.002471 ac |
| 12 m² | 0.002965 ac |
| 15 m² | 0.003707 ac |
| 20 m² | 0.004942 ac |
| 25 m² | 0.01 ac |
| 50 m² | 0.01 ac |
| 100 m² | 0.02 ac |
| 200 m² | 0.05 ac |
| 300 m² | 0.07 ac |
| 500 m² | 0.12 ac |
| 1000 m² | 0.25 ac |
| 2000 m² | 0.49 ac |
| 5000 m² | 1.24 ac |
| 10000 m² | 2.47 ac |
Two acres, and a land deed may mean either
The international acre is exactly 4,046.8564224 m². The US survey acre, built on the survey foot, is 4,046.8726 m² — larger by four parts per million, which is nothing on a garden and about 16 m² across a thousand acres. NIST retired the survey foot on 31 December 2022, but deeds, plats and state plane coordinates written before then still use it, so a boundary described in survey acres does not close against a modern one.
What is a square meter?
A meter on a side, and about 10.764 square feet.
What is an acre?
Exactly 43,560 square feet — historically the land one team of oxen could plough in a day.
How many acres are in a square meter?
One square meter is 2.4711 × 10^-4 acres. Going the other way, one acre is 4046.8564 square meters. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every area unit here
The whole group — 10 units with their symbols and the size of each one in square meters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a square meter.
Cite this page
- APA
- Rule Calculator. (2026). Convert Square meters to acres. Rule Calculator. https://rulecalculators.com/convert/square-meter-to-acre
- MLA
- "Convert Square meters to acres." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/square-meter-to-acre.
- Chicago
- Rule Calculator. "Convert Square meters to acres." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/square-meter-to-acre.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many acres are in a square meter?
- 2.4711 × 10^-4. Exactly 43,560 square feet — historically the land one team of oxen could plough in a day.
- How do I convert acres back to square meters?
- Divide by 2.4711 × 10^-4, or multiply by 4046.8564 — they are the same operation.
The values people look up
Each one is this page with the value filled in, and each answers in its own title.
Other area conversions
Acres to square meters — the same conversion the other way.