JLJosh Liljenquist

Bidirectional unit converter

Hectares to Acres Converter

Convert land area from hectares to international acres, or acres to hectares, using exact metric and international area definitions.

Result in
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Enter a value and select Convert.

Exact relationship and formula

1 hectare = 10,000 m² exactly; 1 international acre = 4,046.8564224 m² exactly. Acres = hectares × 10,000 ÷ 4,046.8564224.

Reverse mode applies the inverse relationship from the same exact definition.

Worked example

1 ha ≈ 2.47105381467 ac; 5 ha ≈ 12.3552690734 ac; 1 ac = 0.40468564224 ha.

Hectares and acres are area units, not linear distances. The calculation retains the exact square-meter definitions.

Common hectares reference values

HectaresConversion
0.1 ha0.247105381467 ac
0.5 ha1.23552690734 ac
1 ha2.47105381467 ac
2 ha4.94210762934 ac
5 ha12.3552690734 ac
10 ha24.7105381467 ac
100 ha247.105381467 ac

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