Area
Acres to hectares
One multiplication, no offset. The factor is exact, so the result is as precise as the input.
The Formula
ha = acres x 0.40468564224
One multiplication, no offset. The factor is exact, so the result is as precise as the input.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| acres | Area in acres | acres | One chain by one furlong, or 43560 square feet. The unit on deeds and land listings. |
| 0.40468564224 | Hectares per acre | hectares per acre | Exact, from 4046.8564224 square metres to the acre divided by 10000. |
| ha | Area in hectares | hectares | Multiply by 10000 for square metres, since a hectare is 100 metres by 100 metres. |
What Each Symbol Means
acresacres
Area in acres
One chain by one furlong, or 43560 square feet. The unit on deeds and land listings.
0.40468564224hectares per acre
Hectares per acre
Exact, from 4046.8564224 square metres to the acre divided by 10000.
hahectares
Area in hectares
Multiply by 10000 for square metres, since a hectare is 100 metres by 100 metres.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to convert acres to hectares page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Convert Acres To Hectares, filed under Unit Conversion. Every number the guide produces comes from substituting into this one line.