Acres to Hectares Converter
Convert ac to ha instantly — and see every other area unit at once.
1 ac=0.404686 ha
1 ac in every unit
Square millimeters
4,046,856,400mm²
Square centimeters
40,468,564cm²
Square meters
4,046.86m²
Square kilometers
0.004047km²
Hectares
0.404686ha
Square inches
6,272,639.97in²
Square feet
43,560.02ft²
Square yards
4,840yd²
Acresfrom
1ac
Square miles
0.001562mi²
Common Acres to Hectares conversions
| Acres (ac) | Hectares (ha) |
|---|---|
| 0.25 ac | 0.10117 ha |
| 0.5 ac | 0.20234 ha |
| 1 ac | 0.40469 ha |
| 2 ac | 0.80937 ha |
| 5 ac | 2.02343 ha |
| 10 ac | 4.04686 ha |
| 25 ac | 10.11714 ha |
| 50 ac | 20.23428 ha |
| 100 ac | 40.46856 ha |
The formula
Acres are used in the US and UK for land area — real estate lots, farms, and parks.
Hectares are the metric unit for land area — 1 hectare = 10,000 m², used for farms and parcels.
Worked examples
1 ac→0.4047 ha— 1 acre
Apply ac × 0.404686 with input = 1. Result: 0.4047 ha.
2.471 ac→1 ha— 1 hectare
Apply ac × 0.404686 with input = 2.471. Result: 1 ha.
10 ac→4.047 ha— 10 acres
Apply ac × 0.404686 with input = 10. Result: 4.047 ha.
5 ac→2.023 ha— 5 acres
Apply ac × 0.404686 with input = 5. Result: 2.023 ha.
FAQ
How do I convert Acres to Hectares?
Use the formula: ha = ac × 0.404686. You can also use the converter above — type any value and the result updates instantly.
Where are Acres used?
Acres are used in the US and UK for land area — real estate lots, farms, and parks.
Where are Hectares used?
Hectares are the metric unit for land area — 1 hectare = 10,000 m², used for farms and parcels.
How do I convert Hectares back to Acres?
Use the Hectares to Acres converter.