Acres to Hectares Converter
Convert acres to hectares instantly. Free acres to hectares converter for land and property measurement.
Formula
hectares = acres × 0.404686
Common Conversions
How to Convert Acres to Hectares
1 acre = 0.405 hectares. Multiply acres by 0.4047 to get hectares. So 100 acres × 0.4047 = 40.47 ha. The hectare (10,000 sq m = 100 m × 100 m) is the standard metric unit for land area; the acre is the imperial counterpart.
Used for international land transactions, agriculture, and conservation reporting. A typical UK farm: 200-500 acres = 81-202 ha. A residential estate: 1-5 acres = 0.4-2 ha. Central Park NYC = 843 acres = 341 ha. Agricultural pricing per hectare or acre varies hugely by location and use.
Common Acres to Hectares
| Acres | Hectares |
|---|---|
| 0.5 acre | 0.20 ha |
| 1 acre | 0.40 ha |
| 2.5 acres | 1.01 ha |
| 5 acres | 2.02 ha |
| 10 acres | 4.05 ha |
| 25 acres | 10.12 ha |
| 100 acres | 40.47 ha |
| 1000 acres | 404.69 ha |
Frequently Asked Questions
Why is 1 acre 0.4 hectares?
Historical accident. The acre was originally 'as much land as a yoke of oxen could plough in one day' - eventually standardised at 4,840 sq yards = 43,560 sq ft. The hectare is purely metric (100 × 100 m). Their ratio (0.4047) reflects the imperial-metric differences in linear units squared.
What's a typical farm size?
UK average farm: 86 ha = 213 acres. US average farm: 446 acres = 180 ha. Australian average farm: vast - 4,330 ha = 10,700 acres typical due to outback grazing. Sizes vary enormously by farm type and country.
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