Acre to Hectare Converter
Convert acres to hectares in your browser, with a full reference table and the formula behind it. Free, instant, no sign-up.
How to convert acres to hectares
hectares = acres × 0.404686
One acre is 0.404686 hectares, so any conversion is a single multiplication. To go the other way, divide by 0.404686 instead. The converter above is already set to acres and hectares, so you can type any value and read the answer straight away.
Acre to Hectare conversion table
Common values, worked out in advance:
| Acres (acre) | Hectares (ha) |
|---|---|
| 1 acre | 0.404686 ha |
| 2 acre | 0.809371 ha |
| 3 acre | 1.2141 ha |
| 5 acre | 2.0234 ha |
| 10 acre | 4.0469 ha |
| 20 acre | 8.0937 ha |
| 50 acre | 20.2343 ha |
| 100 acre | 40.4686 ha |
| 500 acre | 202.3428 ha |
| 1,000 acre | 404.6856 ha |
The quick mental version
For a rough answer without a calculator, remember that 1 ha is about 2.4711 acre. That is usually close enough for shopping, travel and DIY, and the converter above gives you the exact figure when it matters.
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Frequently asked questions
How many hectares are in 1 acre?
One acre is 0.404686 ha. The table above covers the values people look up most often.
What is the formula to convert acres to hectares?
hectares = acres × 0.404686. One acre is 0.404686 hectares, so any conversion is a single multiplication. To go the other way, divide by 0.404686 instead.
Is this acre to hectare converter accurate?
Yes. It uses the exact internationally defined conversion factors and calculates in your browser, so nothing is rounded until the result is displayed.
Can I convert hectares back to acres here?
Yes. Use the swap button in the converter to reverse the direction, or pick any other pair of units from the two dropdowns.