Acres to hectares converter
Hectares (ha)
1 acre = 0.4046856422 hectares
How to convert acres to hectares
ha = ac × 0.40468564224
Multiply the number of acres by 0.40468564224 to get hectares. Going the other way, divide by 0.40468564224 (or multiply by 2.47105381467).
One acre is exactly defined as 0.40468564224 hectares (to 12 significant figures), and one hectare is 2.47105381467 acres.
Worked examples
- Convert 5 acres: 5 × 0.40468564224 = 2.023428211 2.023428211 hectares.
- Convert 12.5 acres: 12.5 × 0.40468564224 = 5.058570528 5.058570528 hectares.
- Convert 250 acres: 250 × 0.40468564224 = 101.1714106 101.1714106 hectares.
Quick-reference table
| ac | ha |
|---|---|
| 1 | 0.4046856422 |
| 2 | 0.8093712845 |
| 3 | 1.214056927 |
| 5 | 2.023428211 |
| 10 | 4.046856422 |
| 15 | 6.070284634 |
| 20 | 8.093712845 |
| 25 | 10.11714106 |
| 50 | 20.23428211 |
| 75 | 30.35142317 |
| 100 | 40.46856422 |
| 1,000 | 404.6856422 |
| ha | ac |
|---|---|
| 1 | 2.471053815 |
| 2 | 4.942107629 |
| 3 | 7.413161444 |
| 5 | 12.35526907 |
| 10 | 24.71053815 |
| 15 | 37.06580722 |
| 20 | 49.42107629 |
| 25 | 61.77634537 |
| 50 | 123.5526907 |
| 75 | 185.3290361 |
| 100 | 247.1053815 |
| 1,000 | 2,471.053815 |
Related conversions
Frequently asked questions
How many hectares are in 1 acre?
1 acre equals 0.4046856422 hectares.
What is the formula to convert acres to hectares?
Use ha = ac × 0.40468564224. Multiply the number of acres by 0.40468564224 to get hectares. Going the other way, divide by 0.40468564224 (or multiply by 2.47105381467).
What is 100 acres in hectares?
100 acres is 40.46856422 hectares.