Acres to Hectares Converter
Convert acres (ac) to hectares (ha) as you type — 1 ac = 0.404686 ha. Switch units, change the precision or copy the result.
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How to use this tool
Steps for using the Unit Converter.
- Enter a value in From — acres are already selected.
- The result in hectares appears instantly. Change either unit to convert to anything else in area.
- Use the swap button for the reverse conversion, and set the decimal places you need.
- Turn on Show formula to see the calculation, then copy or share the result.
Example
1 ac to ha
1 acha = 1 ÷ 2.471053815 = 0.404686 haCommon use cases
- Floor areas of homes, offices and rooms.
- Land, farm and plot sizes in acres and hectares.
- Material coverage for flooring, paint and turf.
Acres to Hectares conversion table
| Acre (ac) | Hectare (ha) |
|---|---|
| 0.1 ac | 0.040469 ha |
| 0.5 ac | 0.202343 ha |
| 1 ac | 0.404686 ha |
| 2 ac | 0.809371 ha |
| 3 ac | 1.214057 ha |
| 4 ac | 1.618743 ha |
| 5 ac | 2.023428 ha |
| 10 ac | 4.046856 ha |
| 15 ac | 6.070285 ha |
| Acre (ac) | Hectare (ha) |
|---|---|
| 20 ac | 8.093713 ha |
| 25 ac | 10.117141 ha |
| 50 ac | 20.234282 ha |
| 75 ac | 30.351423 ha |
| 100 ac | 40.468564 ha |
| 250 ac | 101.171411 ha |
| 500 ac | 202.342821 ha |
| 1,000 ac | 404.685642 ha |
Values rounded to 6 decimal places.
Related conversions
The units
- Acre (ac)
- 43,560 ft² = exactly 4,046.8564224 m². Part of the US customary system.
- Hectare (ha)
- 10,000 m² (100 m × 100 m). Part of the Metric system.
How to convert acres to hectares
Farmland and land plots: the US and UK use acres, most other countries hectares. One hectare is about 2.47 acres.
To convert acres to hectares, use ha = ac ÷ 2.471053815. One acre equals 0.404686 hectares, and one hectare equals 2.471054 acres.
Acre (ac): 43,560 ft² = exactly 4,046.8564224 m². Hectare (ha): 10,000 m² (100 m × 100 m).
For the opposite direction, use the Hectares to acres converter. All area units are on the area converter.
Limitations
- Results are rounded to the decimal places you choose; the calculation itself keeps full precision.
Frequently asked questions
How many hectares are in a acre?
1 ac = 0.404686 ha. Multiply acres by 0.4046856422 (or use ha = ac ÷ 2.471053815).
How do I convert acres to hectares?
Use ha = ac ÷ 2.471053815. For example, 1 ac = 0.4047 ha and 10 ac = 4.0469 ha.
How many square feet are in a square meter?
1 m² = 10.7639 ft². One square foot is exactly 0.09290304 m².
How big is a hectare?
10,000 m² — a square 100 m on each side, about 2.47 acres or roughly 1.4 football (soccer) pitches.