Acre to Hectare Converter
1 ac = 0.404686 ha — convert instantly with formula and table.
Type a value above and it converts instantly — no button to press, no page reload, and the math runs entirely in your browser.
Quick answer: one acre equals 0.404686 hectares. So to convert acres to hectares, multiply by 0.40468564.
How to convert acres to hectares
hectares = acres × 0.4046856422
The acre — historically the area a yoke of oxen could plow in one day — equals 43,560 square feet and remains the standard US unit for land parcels.
The hectare is a 100 m × 100 m square (10,000 m²), the metric unit of farmland and forestry worldwide. One hectare is about 2.47 acres.
Acre to Hectare conversion table
| Acre (ac) | Hectare (ha) |
|---|---|
| 0.01 ac | 0.004047 ha |
| 0.1 ac | 0.040469 ha |
| 0.25 ac | 0.101171 ha |
| 0.4 ac | 0.161874 ha |
| 0.75 ac | 0.303514 ha |
| 1.25 ac | 0.505857 ha |
| 1.75 ac | 0.7082 ha |
| 2.5 ac | 1.0117 ha |
| 3.5 ac | 1.4164 ha |
| 4.5 ac | 1.8211 ha |
| 6 ac | 2.4281 ha |
| 8 ac | 3.2375 ha |
| 10 ac | 4.0469 ha |
| 12 ac | 4.8562 ha |
| 14 ac | 5.6656 ha |
| 16 ac | 6.475 ha |
| 18 ac | 7.2843 ha |
| 20 ac | 8.0937 ha |
| 24 ac | 9.7125 ha |
| 26 ac | 10.5218 ha |
| 30 ac | 12.1406 ha |
| 35 ac | 14.164 ha |
| 45 ac | 18.2109 ha |
| 55 ac | 22.2577 ha |
| 65 ac | 26.3046 ha |
| 75 ac | 30.3514 ha |
| 85 ac | 34.3983 ha |
| 95 ac | 38.4451 ha |
| 110 ac | 44.5154 ha |
| 125 ac | 50.5857 ha |
| 175 ac | 70.82 ha |
| 250 ac | 101.1714 ha |
| 350 ac | 141.64 ha |
| 450 ac | 182.1085 ha |
| 600 ac | 242.8114 ha |
| 750 ac | 303.5142 ha |
| 900 ac | 364.2171 ha |
| 1,500 ac | 607.0285 ha |
| 2,500 ac | 1,011.71 ha |
| 10,000 ac | 4,046.86 ha |
Need the opposite direction? Use the Hectare to Acre converter, or read our complete guide to area conversions for every formula in one place.
Frequently asked questions
How many hectares are in one acre?
One acre equals 0.404686 hectares. Multiply any acre value by 0.40468564 to get hectares.
What is 10 acres in hectares?
10 acres equal 4.0469 hectares (10 × 0.404686).
Is the acre to hectare conversion exact?
The conversion factor used here (0.4046856422) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.