Hectares to Acres converter

To convert hectares to acres, enter the value in the first field. The result in acres is calculated automatically using the exact conversion factor.

1 ha ≈ 2.47105381467 ac
1 ac = 0.40468564224 ha

Formula: ac ≈ ha × 2.47105381467
ha = ac × 0.40468564224

Definitions: 1 ha = 10000 m²; 1 ac = 43560 ft²

The hectare (ha) is 10,000 square meters, the area of a square 100 m on each side. It is the standard unit for farmland and forests in most countries, while the United States uses acres.

The acre (ac) is 43,560 square feet, about 4,047 square meters or 0.4047 hectares. It is used for land area in the United States and, informally, in the United Kingdom and Canada, and traditionally it was the area a team of oxen could plow in a day.

See the conversion table with commonly used values, handy for quick reference or study.