Convert Acres to Hectares

Enter the value in acres to get its exact equivalent in hectares instantly.

How to convert acres to hectares?

To convert a measurement in acres (ac) to hectares (ha), we multiply the value by the conversion factor 0.404686.

ha = ac × 0.404686

The hectare (10,000 m²) is the international standard unit for measuring agricultural and forest land, while the acre remains the common reference in the United States and the United Kingdom for land and estates.

Acres (ac) Hectares (ha)
1.00 0.4047
5.00 2.02
10.00 4.05
50.00 20.23
100.00 40.47

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Frequently Asked Questions

How many hectares are in 1 acre?

1 ac equals exactly 0.404686 hectares.

Which is bigger, a hectare or an acre?

A hectare is bigger than an acre: one hectare equals about 2.47 acres.