Acres to Hectares Converter
Convert acres to hectares instantly. Type a value, change either unit, or press swap to go the other way. 1 acre = 0.40468564 hectares.
1 acre = 0.40468564 hectares
How to convert acres to hectares
hectares = acres × 0.4046856422
To convert acres to hectares, multiply the value by 0.4046856422. To go back from hectares to acres, divide by the same number (or multiply by 2.471053815).
Worked examples
- 1 ac: 1 × 0.4046856422 = 0.40468564 ha
- 2 ac: 2 × 0.4046856422 = 0.80937128 ha
- 5 ac: 5 × 0.4046856422 = 2.0234282 ha
Multiply acres by 0.4. One acre is 0.405 hectares, so 10 acres is about 4 hectares.
Acres to Hectares conversion table
Acres to Hectares
| ac | ha |
|---|---|
| 0.25 | 0.10117141 |
| 0.5 | 0.20234282 |
| 1 | 0.40468564 |
| 2 | 0.80937128 |
| 5 | 2.0234282 |
| 10 | 4.0468564 |
| 40 | 16.187426 |
| 100 | 40.468564 |
| 160 | 64.749703 |
| 640 | 258.99881 |
Hectares to Acres
| ha | ac |
|---|---|
| 0.25 | 0.61776345 |
| 0.5 | 1.2355269 |
| 1 | 2.4710538 |
| 2 | 4.9421076 |
| 5 | 12.355269 |
| 10 | 24.710538 |
| 40 | 98.842153 |
| 100 | 247.10538 |
| 160 | 395.36861 |
| 640 | 1,581.4744 |
Area equivalents
See how one acre and one hectare compare with every other area unit on the site.
1 acre equals
| Unit | Value |
|---|---|
| square inches (in²) | 6,272,640 |
| square centimeters (cm²) | 40,468,564 |
| square feet (ft²) | 43,560 |
| square yards (yd²) | 4,840 |
| square meters (m²) | 4,046.856 |
| hectares (ha) | 0.4046856 |
| square kilometers (km²) | 0.004046856 |
| square miles (mi²) | 0.0015625 |
1 hectare equals
| Unit | Value |
|---|---|
| square inches (in²) | 15,500,031 |
| square centimeters (cm²) | 100,000,000 |
| square feet (ft²) | 107,639.1 |
| square yards (yd²) | 11,959.9 |
| square meters (m²) | 10,000 |
| acres (ac) | 2.471054 |
| square kilometers (km²) | 0.01 |
| square miles (mi²) | 0.003861022 |
When you need to convert acres to hectares
US and UK land listings, farm sales and zoning documents use acres, while agricultural statistics and international sources use hectares. Converting lets you compare yields, prices per area and farm sizes across countries.
About the units
Acre (ac)
An acre is 43,560 square feet, or about 4,047 square meters. It is the usual unit for land in the US and UK.
Hectare (ha)
A hectare is 10,000 square meters, about 2.47 acres. It is the standard metric unit for land and farms.
Frequently asked questions
How do I convert acres to hectares?
Multiply the number of acres by 0.4046856422. For example, 10 acres × 0.4046856422 = 4.046856422 hectares.
How many hectares are in one acre?
There are 0.4046856422 hectares in one acre.
How many acres are in one hectare?
There are 2.471053815 acres in one hectare.
How many hectares are in a square mile (640 acres)?
A square mile of 640 acres is 259.0 hectares, or 2.59 square kilometers.
Can I convert other area units with this tool?
Yes. Use the From and To drop-downs in the converter to choose any area unit, or press the swap button to reverse the conversion. All calculations use internationally defined conversion factors.