Convert acres to hectares
1 ac = 0.40468564 ha. Change the amount below, or read the formula and the reference table further down.
1 acre equals
hectares
1 ac = 0.40468564 ha
The formula
Acres and hectares both measure area from the same zero, so a single multiplier does the job.
ha = ac × 0.4046856422
Going the other way? Convert hectares to acres.
Acres to hectares table
Common values, rounded for reading.
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 | 0.404686 |
| 2 | 0.809371 |
| 3 | 1.2141 |
| 4 | 1.6187 |
| 5 | 2.0234 |
| 6 | 2.4281 |
| 7 | 2.8328 |
| 8 | 3.2375 |
| 9 | 3.6422 |
| 10 | 4.0469 |
| 15 | 6.0703 |
| 20 | 8.0937 |
| 25 | 10.1171 |
| 30 | 12.1406 |
| 40 | 16.1874 |
| 50 | 20.2343 |
| 75 | 30.3514 |
| 100 | 40.4686 |
| 250 | 101.17 |
| 500 | 202.34 |
| 1,000 | 404.69 |
Questions people ask
- How many hectares are in a acre?
- One acre equals 0.4046856422 hectares.
- How do I convert acres to hectares by hand?
- Multiply the number of acres by 0.4046856422. For a rough check, 0.405 is close enough for most everyday use.
- What is 1 acre in hectares?
- 1 acre is 0.40468564 hectares.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.