Work out acre to hectare instantly with clear inputs, formula shown and shareable results.
Converting Acres to Hectares is a single multiplication: one acre equals 0.40468564 ha, so the amount is multiplied by that factor. Switching the direction divides by the same factor instead. This factor is an exact definition, not a rounded approximation, so the conversion is precise at any scale. A hectare is 10,000 m² by definition; an acre is 4,046.8564224 m², so an acre is just over 0.4 ha.
Acres → Hectares
ha = acre × 0.40468564
Hectares → Acres
acre = ha ÷ 0.40468564
One acre is 0.40468564 ha. That figure is exact by definition.
Divide by 0.40468564 instead of multiplying — or just switch the direction selector, which does it for you.