Hectares to Acres
Convert hectares to acres instantly.
Hectares to Acres (ha to ac) Converter
1 hectare = 2.4711 acres
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- 1 ha = 2.4711 ac
- 5 ha = 12.355 ac
- 10 ha = 24.711 ac
- 25 ha = 61.776 ac
- Square metresm²
- Hectaresha
- Square feetft²
- Square metresm²
- Square feetft²
- Acresac
How it’s calculated
ac = ha × 2.471053815
- Multiply the value in hectares by 2.471053815.
- To go back, divide by 2.471053815 (or multiply by 0.4046856422).
- 1 ha = 2.471053815 ac · 1 ac = 0.4046856422 ha
Quick examples
1 hectare = 2.4711 acres · 1 ac = 0.40469 ha
- 1 hectare = 2.4711 acres
- 5 hectares = 12.355 acres
- 10 hectares = 24.711 acres
- 25 hectares = 61.776 acres
- 100 hectares = 247.11 acres
Hectares to acres conversion table
| Hectares (ha) | Acres (ac) |
|---|---|
| 0.1 ha | 0.24711 ac |
| 0.5 ha | 1.2355 ac |
| 1 ha | 2.4711 ac |
| 2 ha | 4.9421 ac |
| 3 ha | 7.4132 ac |
| 4 ha | 9.8842 ac |
| 5 ha | 12.355 ac |
| 6 ha | 14.826 ac |
| 7 ha | 17.297 ac |
| 8 ha | 19.768 ac |
| 9 ha | 22.239 ac |
| 10 ha | 24.711 ac |
| 15 ha | 37.066 ac |
| 20 ha | 49.421 ac |
| 25 ha | 61.776 ac |
| 30 ha | 74.132 ac |
| 40 ha | 98.842 ac |
| 50 ha | 123.55 ac |
| 75 ha | 185.33 ac |
| 100 ha | 247.11 ac |
| 250 ha | 617.76 ac |
| 500 ha | 1,235.5 ac |
| 1,000 ha | 2,471.1 ac |
About these units
Hectare (ha)
metric (non-SI)
1 ha = 10,000 m² (exact)
Defined as exactly 10,000 m² (a square 100 m on each side).
Source: BIPM SI Brochure (9th ed.)
Acre (ac)
US & imperial (identical)
1 ac = 4,046.8564224 m² (exact)
The international acre: 43,560 square feet, or exactly 4,046.8564224 m².
Source: NIST SP 811 / Handbook 44
Frequently asked questions
How do I convert hectares to acres?
Use ac = ha × 2.471053815. Multiply the value in hectares by 2.471053815.
How many acres are in 1 hectare?
1 hectare (ha) equals 2.4711 acres (ac); more precisely 2.471053815.
How many hectares are in 1 acre?
1 acre (ac) equals 0.40469 hectares (ha); more precisely 0.4046856422.
What is 10 ha in ac?
10 hectares = 24.711 acres.
What is a hectare?
Defined as exactly 10,000 m² (a square 100 m on each side).
What is a acre?
The international acre: 43,560 square feet, or exactly 4,046.8564224 m².
Related conversions
Formula: ac = ha × 2.471053815. Factors last reviewed 2026-10-27.