Hectares to Acres (ha to ac)
1 ha = 2.47105 ac
and 1 ac = 0.404686 ha
How to convert Hectares to Acres
ac = ha × 2.47105
To convert, multiply the number of hectares by 2.47105. Example: 10 ha × 2.47105 = 24.7105 ac.
1 hectare is 10,000 m², and 1 acre is exactly 4,046.8564224 m², so 1 ha ≈ 2.47105 acres.
Converts metric land areas (1 ha = 10,000 m², a square 100 m on each side) into acres.
Mental shortcut: multiply by 2.5 (overestimates by about 1.2%).
Hectares to Acres conversion chart
| Hectares | Acres |
|---|---|
| 0.25 ha | 0.6178 ac |
| 0.5 ha | 1.24 ac |
| 0.75 ha | 1.85 ac |
| 1 ha | 2.47 ac |
| 2 ha | 4.94 ac |
| 3 ha | 7.41 ac |
| 4 ha | 9.88 ac |
| 5 ha | 12.36 ac |
| 6 ha | 14.83 ac |
| 7 ha | 17.3 ac |
| 8 ha | 19.77 ac |
| 9 ha | 22.24 ac |
| 10 ha | 24.71 ac |
| 11 ha | 27.18 ac |
| 12 ha | 29.65 ac |
| 13 ha | 32.12 ac |
| 14 ha | 34.59 ac |
| 15 ha | 37.07 ac |
| 16 ha | 39.54 ac |
| 17 ha | 42.01 ac |
| 18 ha | 44.48 ac |
| 19 ha | 46.95 ac |
| 20 ha | 49.42 ac |
| 25 ha | 61.78 ac |
| 30 ha | 74.13 ac |
| 35 ha | 86.49 ac |
| 40 ha | 98.84 ac |
| 45 ha | 111.2 ac |
| 50 ha | 123.55 ac |
| Hectares | Acres |
|---|---|
| 55 ha | 135.91 ac |
| 60 ha | 148.26 ac |
| 65 ha | 160.62 ac |
| 70 ha | 172.97 ac |
| 75 ha | 185.33 ac |
| 80 ha | 197.68 ac |
| 85 ha | 210.04 ac |
| 90 ha | 222.39 ac |
| 95 ha | 234.75 ac |
| 100 ha | 247.11 ac |
| 150 ha | 370.66 ac |
| 200 ha | 494.21 ac |
| 250 ha | 617.76 ac |
| 300 ha | 741.32 ac |
| 350 ha | 864.87 ac |
| 400 ha | 988.42 ac |
| 450 ha | 1,111.97 ac |
| 500 ha | 1,235.53 ac |
| 550 ha | 1,359.08 ac |
| 600 ha | 1,482.63 ac |
| 650 ha | 1,606.18 ac |
| 700 ha | 1,729.74 ac |
| 750 ha | 1,853.29 ac |
| 800 ha | 1,976.84 ac |
| 850 ha | 2,100.4 ac |
| 900 ha | 2,223.95 ac |
| 950 ha | 2,347.5 ac |
| 1,000 ha | 2,471.05 ac |
Values rounded to 2 decimal places (4 below 1). Use the converter above for more precision.
Frequently asked questions
How many acres are in 1 hectare?
1 hectare = 2.47105 acres. 1 hectare is 10,000 m², and 1 acre is exactly 4,046.8564224 m², so 1 ha ≈ 2.47105 acres.
How do I convert hectares to acres?
Multiply the number of hectares by 2.47105. Example: 10 ha × 2.47105 = 24.7105 ac.
Is there a quick way to estimate ha to ac in your head?
Yes — multiply by 2.5. This overestimates by about 1.2%. Use the exact formula (ac = ha × 2.47105) when precision matters.
How do I convert acres back to hectares?
Use ha = ac ÷ 2.47105 — divide the number of acres by 2.47105. See the Acres to Hectares page for a full chart.