Area Converter
Square units, acres and hectares.
Conversion
Acres to Hectares Converter
1 acre = 0.4046856422 ha. Enter any value to convert acres (ac) to hectares (ha), or use the table below for common values.
Formula
ha = ac × 0.4046856422
Example: 10 ac = 4.046856422 ha. To convert the other way, use ac = ha × 2.471053815.
Quick mental estimate: multiply by about 0.4.
Acres to Hectares conversion table
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 ac | 0.4046856422 ha |
| 2 ac | 0.8093712845 ha |
| 3 ac | 1.214056927 ha |
| 4 ac | 1.618742569 ha |
| 5 ac | 2.023428211 ha |
| 6 ac | 2.428113853 ha |
| 7 ac | 2.832799496 ha |
| 8 ac | 3.237485138 ha |
| 9 ac | 3.64217078 ha |
| 10 ac | 4.046856422 ha |
| 15 ac | 6.070284634 ha |
| 20 ac | 8.093712845 ha |
| 25 ac | 10.11714106 ha |
| 30 ac | 12.14056927 ha |
| 40 ac | 16.18742569 ha |
| 50 ac | 20.23428211 ha |
| 75 ac | 30.35142317 ha |
| 100 ac | 40.46856422 ha |
| 250 ac | 101.1714106 ha |
| 500 ac | 202.3428211 ha |
| 1,000 ac | 404.6856422 ha |
About acres and hectares
The acre is 43,560 square feet (about 4,047 m²), the traditional unit for farmland and building plots in the US and UK.
The hectare is 10,000 m² (100 m × 100 m), the standard unit for farmland and forests in metric countries.
Other Area conversions
Hectares → AcresReverse conversionSquare Meters → Hectaresm² → haSquare Kilometers → Hectareskm² → haSquare Inches → Hectaresin² → haSquare Feet → Hectaresft² → haSquare Yards → Hectaresyd² → haSquare Miles → Hectaresmi² → haAcres → Square Metersac → m²Acres → Square Kilometersac → km²Acres → Square Inchesac → in²Acres → Square Feetac → ft²Acres → Square Yardsac → yd²Acres → Square Milesac → mi²
Frequently asked questions
How do I convert acres to hectares?
Use the formula ha = ac × 0.4046856422. For example, 10 ac = 4.046856422 ha.
What is 1 acre in hectares?
1 ac = 0.4046856422 ha.
How do I convert hectares back to acres?
Use ac = ha × 2.471053815. 1 ha = 2.471053815 ac.