Acres and Square Metres: Conversion Reference
1 acre = 4,046.8564224 m² exactly. 1 m² = 0.00024711 acres. Convert in either direction.
Updated April 2026
Formula
acres × 4,046.8564224 = m²
m² × 0.00024711 = acres
m² / 4,046.86 = acres
acres × 0.40469 = hectares
Full Reference Table
| Acres | m² |
|---|---|
| 0.1 | 404.7 |
| 0.25 | 1,011.7 |
| 0.5 | 2,023.4 |
| 1 | 4,046.9 |
| 2 | 8,093.7 |
| 5 | 20,234.3 |
| 10 | 40,468.6 |
| 20 | 80,937.1 |
| 40 | 161,874.3 |
| 50 | 202,342.8 |
| 100 | 404,685.6 |
| 200 | 809,371.3 |
| 500 | 2,023,428.2 |
| 1000 | 4,046,856.4 |
Acres vs Square Metres: Global Context
In most of Europe, Asia, South America, and Africa, land is measured in square metres (m²) or hectares (1 hectare = 10,000 m²), not acres. Acres remain the standard in the United States, United Kingdom, Canada, and Australia for real estate purposes.
If you are a British buyer looking at a US ranch listing in acres, or an American buying a European farm listed in hectares, this page is your bridge. A 10,000 m² plot is 1 hectare = 2.471 acres. A 40-acre US farm is 161,874 m² or 16.19 hectares.
Quick mental benchmarks
- -4,047 m² = 1 acre (roughly 4,000 m² is a good mental shortcut)
- -10,000 m² = 1 hectare = 2.47 acres
- -1 m² is about the size of a standard door
- -100 m² is a typical European apartment floor area
Need to convert square metres to square feet (not acres)?
squaremeterstosquarefeet.com