Acre to Hectare Converter
1 acre is exactly 0.40468564224 hectares. Convert acres (ac) to hectares (ha) below: type a value and the result updates as you type.
ac to ha calculator
Result
Acre to Hectare conversion
1 ac = 0.40468564224 haone acre in hectares
1 ha ≈ 2.471053815 acone hectare in acres
Acre (ac): International acre: 43 560 square international feet. The older US survey acre differs by about 2 parts per million.
Hectare (ha): Exactly 10 000 square meters.
Source:Acre: International yard and pound agreement (1959); Hectare: SI Brochure, 9th edition (BIPM, 2019)
How to convert acres to hectares
To convert acres to hectares, multiply the number of acres by 0.40468564224.
Formula
ha = ac × 0.40468564224
Examples
- 5 ac = 5 × 0.40468564224 = 2.0234282112 ha
- 25 ac = 25 × 0.40468564224 = 10.117141056 ha
- 100 ac = 100 × 0.40468564224 = 40.468564224 ha
Acre to Hectare conversion table
| Acre (ac) | Hectare (ha) |
|---|---|
| 0.1 ac | 0.040468564224 ha |
| 0.5 ac | 0.20234282112 ha |
| 1 ac | 0.40468564224 ha |
| 2 ac | 0.80937128448 ha |
| 3 ac | 1.21405692672 ha |
| 5 ac | 2.0234282112 ha |
| 10 ac | 4.0468564224 ha |
| 20 ac | 8.0937128448 ha |
| 25 ac | 10.117141056 ha |
| 50 ac | 20.234282112 ha |
| 100 ac | 40.468564224 ha |
| 250 ac | 101.17141056 ha |
| 500 ac | 202.34282112 ha |
| 1000 ac | 404.68564224 ha |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many hectares are in one acre?
- One acre is exactly 0.40468564224 hectares.
- How do I convert hectares to acres?
- To convert hectares to acres, divide the number of hectares by 0.40468564224. The formula is ac = ha ÷ 0.40468564224.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 0.40468564224 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a acre or a hectare?
- A hectare is about 2.471053815 times larger than a acre. In other words, a acre is 0.40468564224 of a hectare.