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Italiano1 hectare = 2.47105 acres: the formula
A hectare is 10,000 square meters and an international acre is exactly 4,046.8564224 m². To turn hectares into acres, divide by 0.40468564224, which is the same as multiplying by 2.47105: acres = ha × 2.47105. Example: 10 ha × 2.47105 = 24.71 acres.
The converter on this page is already set to hectares to acres, starting from 1 ha. The answer updates as you type, rounded to six significant figures, and the "Formula:" line shows the full factor, 1 ha = 2.47105381467 ac. The ⇄ "Swap units" button turns it into acres to hectares. The "In every unit" table gives the same area in m², km², square feet (ft²) and cm²: 1 ha = 0.01 km² = 107,639 ft².
Hectares to acres conversion chart
| Hectares | Acres | For scale |
|---|---|---|
| 0.1 | 0.25 | A quarter-acre house lot, roughly |
| 0.25 | 0.62 | A large suburban yard |
| 0.5 | 1.24 | Just over an acre |
| 0.714 | 1.76 | Soccer field, 105 × 68 m |
| 1 | 2.47 | A square 100 m on each side |
| 2 | 4.94 | Paddock for a few horses |
| 5 | 12.36 | Small vineyard |
| 15 | 37.07 | Market garden or orchard |
| 20 | 49.42 | Just under 50 acres |
| 50 | 123.55 | Mid-sized livestock farm |
| 65 | 160.62 | About a quarter section |
| 100 | 247.11 | 1 km² |
| 1,000 | 2,471.05 | 10 km² |
Where hectares turn up
Buying land abroad. Listings in France, Italy, Spain or Portugal give land in hectares. A farmhouse sold with 15 ha comes to 37.07 acres; a 5 ha vineyard in Bordeaux is 12.36 acres.
Canada and the UK. Both are officially metric, so government maps, farm schemes and planning documents often use hectares, while estate agents and older deeds still quote acres. A 65 ha block is 160.62 acres, close to the 160-acre quarter section used in North American land surveys.
The soccer field. A pitch of 105 × 68 m covers 7,140 m², which is 0.714 ha or 1.76 acres. One hectare is about 1.4 pitches.
Mental math
Multiply by 2.5. Ten hectares become 25 acres instead of 24.71, about 1.17% too high. Fine for a rough idea of a listing, not for a contract.
Note that the converter uses the international acre. The US survey acre, which was used for some land records until the survey foot was retired, is only a few parts per million larger, far below what a listing shows.
Frequently asked questions
How many acres are in a hectare?
2.47105 acres. Two hectares are 4.94 acres and 100 hectares are 247.11 acres.
How many square feet is a hectare?
107,639 ft², against 43,560 ft² for an acre.
Is a hectare bigger than an acre?
Yes, about two and a half times bigger. One acre is 0.404686 ha, a little over 40% of a hectare.