How do I convert Acres to Hectares?

To convert Acres (ac) to Hectares (ha), use the formula: 1 ac = 0.4046856422 ha. For example, 1 ac equals 0.404686 ha.

How many ha are in one ac?

There are 0.404686 hectares in one acres (1 ac = 0.404686 ha).

What is the conversion formula for ac to ha?

The exact conversion formula is: 1 ac = 0.4046856422 ha. This converter uses this formula to give you an accurate result for any value you enter.

Acres to Hectares Converter

This free area converter converts Acres (ac) to Hectares (ha) and back again. The exact conversion factor is 1 ac = 0.404686 ha, so 10 ac equals 4.0469 ha.

Type a value in either field — the result updates in real time. The reference table below shows common conversion values at a glance. All calculations run entirely in your browser with no data sent to any server.

Acres (ac)	Hectares (ha)
1 ac	0.404686 ha
10 ac	4.0469 ha
100 ac	40.4686 ha
1000 ac	404.6856 ha