Acres to Hectares converter

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

1 ac = 0.40468564224 ha
1 ha ≈ 2.47105381467 ac

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

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

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.

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.

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