An international acre is 4,046.8564224 square meters.
Acre to Hectare
Convert Acre to Hectare instantly. Free online agriculture unit converter with exact formula, conversion table and FAQ.
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A hectare is 10,000 square meters.
1 ac = 0.4046856422 ha
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Formula
1 ac = 0.4046856422 ha
value in ha = value in ac × 0.4046856422
value in ac = value in ha × 2.471053815
Conversion table
| 1 ac | 0.4046856422 ha |
| 2 ac | 0.8093712845 ha |
| 5 ac | 2.023428211 ha |
| 10 ac | 4.046856422 ha |
| 20 ac | 8.093712845 ha |
| 50 ac | 20.23428211 ha |
| 100 ac | 40.46856422 ha |
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Frequently asked questions
How do I convert acre to hectare?
Multiply the acre value by 0.4046856422 to get hectare. For example, 1 ac = 0.4046856422 ha.
What is the formula for acre to hectare?
Use the formula: value in ha = value in ac × 0.4046856422. To convert back, value in ac = value in ha ÷ 0.4046856422.
Is the acre to hectare conversion exact?
Yes. Both units belong to the same area family, so the factor 0.4046856422 gives an exact, direct conversion.
Where is the acre unit commonly used?
It is commonly used in agriculture and agronomy for area calculations such as field records, fertilizer and seed planning, or irrigation and yield tracking.
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About this conversion
Acre and Hectare are units used in the Universal Converter agriculture category. Acre (ac): An international acre is 4,046.8564224 square meters. Hectare (ha): A hectare is 10,000 square meters.
Both units belong to the area family, so the conversion factor above is a direct, exact scale relationship between acre and hectare.