One hectare is about 2.4710538 acres. The hectare is defined as exactly 10,000 square meters, a square 100 meters on each side, and the acre as exactly 4,046.8564224 square meters, so the factor is 10,000 divided by that number. People convert in this direction when land is described in metric and they think in acres: an American or British buyer reading a listing from Australia, France or South America, or a farmer comparing an overseas yield report with their own records.
Formula
Hectares to Acres conversion table
| Hectares | Acres |
|---|---|
| 0.25 ha | 0.617763 ac |
| 0.5 ha | 1.2355 ac |
| 1 ha | 2.4711 ac |
| 2 ha | 4.9421 ac |
| 3 ha | 7.4132 ac |
| 4 ha | 9.8842 ac |
| 5 ha | 12.3553 ac |
| 6 ha | 14.8263 ac |
| 7 ha | 17.2974 ac |
| 8 ha | 19.7684 ac |
| 9 ha | 22.2395 ac |
| 10 ha | 24.7105 ac |
| 15 ha | 37.0658 ac |
| 20 ha | 49.4211 ac |
| 25 ha | 61.7763 ac |
| 30 ha | 74.1316 ac |
| 40 ha | 98.8422 ac |
| 50 ha | 123.5527 ac |
| 60 ha | 148.2632 ac |
| 70 ha | 172.9738 ac |
| 75 ha | 185.329 ac |
| 80 ha | 197.6843 ac |
| 90 ha | 222.3948 ac |
| 100 ha | 247.1054 ac |
| 250 ha | 617.7635 ac |
| 500 ha | 1,235.53 ac |
| 1,000 ha | 2,471.05 ac |
Where you’ll use it
Rural property in Australia, New Zealand, most of Europe, Latin America and much of Africa and Asia is listed in hectares, and farm subsidy and land-use forms in those countries ask for hectares too. A 10-hectare block is about 24.71 acres; a 1,000-hectare station is about 2,471 acres. If you measure a field in the Land Measure app you can switch the display between hectares and acres, so you rarely need to convert by hand once the boundary is drawn.
Tip: Rounding the factor to 2.5 overstates every result by about 1.2%, which adds roughly 2.9 acres on every 100 hectares. Using 2.47 is close for small plots but drops about one acre per 1,000 hectares. Keep at least 2.471 for land deals.