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Area acre to hectare

Convert acres to hectares and back, with square metre and square foot equivalents.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

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Results update as you type. The formula and assumptions are explained below the calculator.

Area in hectares

0.4047 ha

Acres1 acre
Hectares0.4047 ha
Square metres4,047 m²
Square feet43,560 ft²

1 acre = 4,046.8564 m² = 0.4046856 ha, so the conversion itself is exact. A land survey may quote a different figure because of boundary rounding.

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What does this tool do?

An acre is a customary land unit equal to 4,046.86 square metres, while a hectare is 10,000 square metres. This converter moves between the two and shows the area in metric and imperial units.

The Formula

Hectares = Acres × 0.4046856; acres = hectares × 2.4710538

Frequently Asked Questions

How many acres are in a hectare?

One hectare is about 2.471 acres, and one acre is about 0.4047 hectares. A useful check is that a hectare is roughly two and a half acres.

Which unit is used for farmland?

Hectares are standard in most countries, while acres remain common in the United States and the United Kingdom. Land listings usually state which unit they use.