1 hectare = 2.4710538 ac
1 ha = 2.47105 ac · type math like (12*4)+6.5
Hectares to acres helps American and British buyers understand metric land listings, vineyard sizes and conservation areas. It is also common in news reports about wildfires and deforestation, which are measured in hectares internationally.
Forestry and conservation reports use hectares. When a national park expands by 5,000 ha, that is 12,355 acres. US readers often need conversion to picture these areas.
Vineyards are another case: famous Burgundy plots are measured in hectares, sometimes tiny ones. Romanée-Conti covers about 1.8 ha, which is 4.45 acres. Champagne houses describe their estates in hectares, and wine writers in the US usually convert to acres.
Solar farms are often described in hectares too. A solar farm needs roughly 1.5–2 ha per megawatt, which is about 3.7–4.9 acres. Planners in the US work in acres when zoning land for these projects.
When comparing farms, remember a hectare is a square 100 m on each side, while an acre is about 63.6 m on each side if it were square. One hectare is nearly two and a half acres, so the acre number is always larger.
Golf courses are another case. An 18-hole course usually occupies 50 to 80 ha, which is 124 to 198 acres. Developers in the US quote acreage while European clubs quote hectares.
Land prices in Europe are quoted per hectare. Farmland in France averages around €6,000 per hectare, which is about €2,430 per acre, while prime farmland in the Netherlands can exceed €70,000 per hectare. US investors divide the hectare price by 2.471 to compare with American land prices per acre.
City parks are often compared this way. New York's Central Park covers 341 ha, which is 843 acres, while London's Hyde Park covers 142 ha, or 350 acres. Richmond Park, London's largest Royal Park, covers 955 ha, about 2,360 acres.
For quick estimates, multiply hectares by 2.5 and subtract a little: 40 ha × 2.5 = 100, minus about 1% gives 98.8 acres, close to the exact 98.84 acres.
To check an answer, the acre number should be about two and a half times the hectare figure. 20 ha should land near 49 acres (49.42 exactly). If your result is smaller than the hectare figure, you divided by mistake. When converting land prices instead of land areas, the factor flips: a price per hectare is divided by 2.471 to give the price per acre.
ac = ha × 2.471053815
Reverse: 1 ac = 0.40468564 ha.
Convert 2.5 ha to acres.
Answer: 2.5 ha = 6.18 acres.
| ha | ac |
|---|---|
| ¼ ha | 0.61776345 ac |
| ½ ha | 1.2355269 ac |
| ¾ ha | 1.8532904 ac |
| 1 ha | 2.4710538 ac |
| 2 ha | 4.9421076 ac |
| 3 ha | 7.4131614 ac |
| 4 ha | 9.8842153 ac |
| 5 ha | 12.355269 ac |
| 6 ha | 14.826323 ac |
| 7 ha | 17.297377 ac |
| 8 ha | 19.768431 ac |
| 9 ha | 22.239484 ac |
| 10 ha | 24.710538 ac |
| 11 ha | 27.181592 ac |
| 12 ha | 29.652646 ac |
| 13 ha | 32.1237 ac |
| ha | ac |
|---|---|
| 14 ha | 34.594753 ac |
| 15 ha | 37.065807 ac |
| 16 ha | 39.536861 ac |
| 17 ha | 42.007915 ac |
| 18 ha | 44.478969 ac |
| 19 ha | 46.950022 ac |
| 20 ha | 49.421076 ac |
| 25 ha | 61.776345 ac |
| 30 ha | 74.131614 ac |
| 40 ha | 98.842153 ac |
| 50 ha | 123.55269 ac |
| 75 ha | 185.32904 ac |
| 100 ha | 247.10538 ac |
| 250 ha | 617.76345 ac |
| 500 ha | 1 235.5269 ac |
| 1 000 ha | 2 471.0538 ac |
A 12 ha estate is 29.65 acres.
A fire burning 10,000 ha has covered 24,711 acres.
2.5 ha is 6.18 acres.
A hectare is larger, so the acre number should go up. 10 ha is 24.7 acres, not 4.05.
On spreadsheets, ha and h are sometimes confused. Hectares are always ha.
On 1,000 ha, using 2.5 overstates by 29 acres.
A hectare is 10,000 m², equal to 2.4710538 acres.
Origin. Part of the metric system; 100 ares, where one are is 100 m².
Used today. Agriculture, forestry, national parks and land registers in most of the world.
An acre is 4,046.86 m², or 43,560 ft².
Origin. Medieval English measure of a day's ploughing.
Used today. Land sales in the US, UK and Australia.
247.1 acres, since 1 km² = 100 ha.
Yes, a hectare is larger than an American football field including end zones (about 0.53 ha).
Hectare, from hecto (100) and are (100 m²).
123.55 acres.