Area conversion
Acre to Hectare
1 ac =0.40468564ha
0.40468564
1 ac =0.40468564 ha
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About Acre to Hectare
Acres to hectares converts US and UK land area into metric. With about 0.405 hectares per acre, this is the standard conversion for international real estate, farming, and survey data.
Formula
To convert acres to hectares, multiply the value in acres by 0.4046856422. Hectares = Acres × 0.4046856422.
Worked example
For example, 100 acres × 0.4047 = 40.47 hectares. A 100-acre farm is about 40.5 hectares.
Acre to Hectare table
| Acre (ac) | Hectare (ha) |
|---|---|
| 0.5 | 0.20234282 |
| 1 | 0.40468564 |
| 2 | 0.80937128 |
| 5 | 2.02342821 |
| 10 | 4.04685642 |
| 25 | 10.11714106 |
| 50 | 20.23428211 |
| 100 | 40.46856422 |
| 500 | 202.34282112 |
| 1,000 | 404.68564224 |
Common use cases
- 01Converting US/UK property sizes to metric
- 02International farming and agricultural reporting
- 03Mapping and survey data
- 04Conservation and park area reporting
A bit of history
The acre, originally an English plowing measure, has been fixed at exactly 4,046.8564224 square meters since the 1959 international yard-and-pound agreement.
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Frequently asked questions
How many hectares in an acre?+
1 acre equals about 0.4047 hectares.
How many hectares in 10 acres?+
10 acres equals about 4.047 hectares.
How many hectares in 100 acres?+
100 acres equals about 40.47 hectares.
How many acres is 1 hectare?+
1 hectare equals about 2.471 acres.
Need the reverse?
Convert Hectare to Acre →