Convert acres to hectares, both ways.
Type a land area in acres and read the exact hectares, or type hectares to convert back. The result updates live, with square meters, square feet and square mile context and a one-click copy.
Your land area
Edit either box. The formula is ha = acres times 0.404686, and acres = ha divided by 0.404686.
4.0469 haWhat this means
Common parcels in hectares
hectares Each bar shows the hectare equivalent of a common acre parcel, from a 1-acre lot to a full 640-acre square mile. Every height is the acre area multiplied by 0.404686.
Land milestones
Common acres to hectares values
| Acres | Hectares | Hectares (rounded) | Where you see it |
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How the conversion works
Conversion Factor
1 acre equals 0.4047 hectares. 1 hectare = 2.471 acres. The hectare is 10,000 m² (a square 100 m on a side). The acre is 43,560 ft² (originally the area one ox could plow in one day).
Land Measurement Worldwide
The US uses acres; most other countries use hectares. Farm sizes, forest tracts, and rural property listings in international contexts often need conversion. 1 sq mile = 640 acres = 259 hectares.
Reference Values
1 acre = 0.405 ha. 10 acres = 4.05 ha. 100 acres = 40.47 ha. 640 acres (1 sq mile) = 259 ha. 1000 acres = 404.69 ha.
Common questions
10 acres in hectares?
10 acres = 4.05 hectares.
How big is a football field?
A US football field is about 1.32 acres (0.535 ha). A soccer pitch is 1.5-2 acres (0.6-0.8 ha).
What's 1 hectare in square feet?
1 hectare = 107,639 ft² ≈ 2.5 acres.
All conversion runs in your browser. Nothing is uploaded. 1 acre is exactly 0.40468564224 hectares by definition (an acre is 43,560 square feet and the foot is defined as 0.3048 m), so these results are precise, not approximate.