Acre To Hectare Calculator

Work out acre to hectare instantly with clear inputs, formula shown and shareable results.

About Acre To Hectare Calculator

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.

Formulas

Acres → Hectares

ha = acre × 0.40468564

Hectares → Acres

acre = ha ÷ 0.40468564

Worked example

With the default values below, Acre To Hectare Calculator returns Converted Value of 0.404686. Change any input above and every figure here is recalculated in your browser.

Inputs used

Amount to convert: 1
Directionone of Acres → Hectares, Hectares → Acres: Acres → Hectares

Results

Converted Value: 0.404686
Result Unit: ha
Multiplier Applied: 0.40468564
Conversion Used: 1 acre = 0.40468564 ha

Step by step

1Values used
2Acres → Hectares
3Hectares → Acres
4Converted Value= 0.404686
5Result Unit= ha
6Multiplier Applied= 0.40468564
7Conversion Used= 1 acre = 0.40468564 ha

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 8 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How many ha are in one acre?

One acre is 0.40468564 ha. That figure is exact by definition.

How do I convert Hectares back to Acres?

Divide by 0.40468564 instead of multiplying — or just switch the direction selector, which does it for you.