Acres to Hectares Converter

Conversion Updated 15 Jun 2026

This Acres to Hectares Converter lets you convert Acres (acre) into Hectares (ha) in one step. Enter a value in acres and you'll instantly see the equivalent in hectares, worked out with the formula hectares = acres x 0.40468564224. It's handy whenever you need a quick, precise acres-to-hectares conversion without doing the arithmetic by hand.

  • Conversion constants are fixed and do not vary by region.

Formula

hectares = acres x 0.40468564224
  • To convert acres to hectares, multiply your value by the fixed factor 0.40468564224 (so 1 acre = 0.40468564224 ha).
  • The factor comes from the internationally agreed definitions of each unit, so it never changes.
  • Displayed results are rounded for readability, but the full-precision value is used in the calculation.

Example

Inputs
  • Acres (acre): 10

Start with 10 acre. Multiply by 0.40468564224 to get 4.0468564224 ha.

Frequently asked questions

How do I convert acres to hectares?
Multiply the number of acres by 0.40468564224. For example, 10 acre equals 4.0468564224 ha.
Are these conversion factors accurate?
Yes. The calculator uses internationally accepted definitions for each unit, so the conversion factor is exact.
Why can tiny differences appear after conversion?
Very small differences are only a display effect from rounding the output. The underlying calculation keeps full precision.