This hectares to acres converter gives you the ha to ac result instantly, in your browser, with the exact ratio so you can verify it. 1 hectare is about 2.47105 acres, and going the other way, 1 acre is 0.404686 hectares. Hectares are part of the metric system used in most countries; acres are an imperial unit still common in the United States and the United Kingdom.
To convert by hand, multiply the number of hectares by 2.47105. For example, 10 hectares is 24.7105 acres and 100 hectares is 247.105 acres. The table below lists the most requested values, and the converter above accepts decimals for anything in between.
ha to ac formula
ac = ha × 2.47105
1 hectare is about 2.47105 acres. Multiply the value in hectares by that factor to get acres.
Hectares to Acres conversion table
| hectares | acres | Rounded |
|---|---|---|
| 1 ha | 2.47105 ac | 2.47 |
| 2 ha | 4.94211 ac | 4.94 |
| 3 ha | 7.41316 ac | 7.41 |
| 4 ha | 9.88422 ac | 9.88 |
| 5 ha | 12.3553 ac | 12.4 |
| 6 ha | 14.8263 ac | 14.8 |
| 7 ha | 17.2974 ac | 17.3 |
| 8 ha | 19.7684 ac | 19.8 |
| 9 ha | 22.2395 ac | 22.2 |
| 10 ha | 24.7105 ac | 24.7 |
| 12 ha | 29.6526 ac | 29.7 |
| 15 ha | 37.0658 ac | 37.1 |
| 20 ha | 49.4211 ac | 49.4 |
| 25 ha | 61.7763 ac | 61.8 |
| 30 ha | 74.1316 ac | 74.1 |
| 40 ha | 98.8422 ac | 98.8 |
| 50 ha | 123.553 ac | 124 |
| 60 ha | 148.263 ac | 148 |
| 70 ha | 172.974 ac | 173 |
| 75 ha | 185.329 ac | 185 |
| 80 ha | 197.684 ac | 198 |
| 90 ha | 222.395 ac | 222 |
| 100 ha | 247.105 ac | 247 |
| 150 ha | 370.658 ac | 371 |
| 200 ha | 494.211 ac | 494 |
| 250 ha | 617.763 ac | 618 |
| 300 ha | 741.316 ac | 741 |
| 500 ha | 1,235.53 ac | 1,236 |
| 750 ha | 1,853.29 ac | 1,853 |
| 1,000 ha | 2,471.05 ac | 2,471 |
Frequently asked questions
How many acres are in 5 hectares?
5 ha = 12.3553 ac. Multiply 5 by 2.47105, the number of acres in one hectare. The converter on this page does the same arithmetic for any value, including decimals.
What is the formula to convert hectares to acres?
ac = ha × 2.47105. The factor comes from the definitions of the units: 1 hectare is about 2.47105 acres. Worked example: 12 ha = 29.6526 ac.
Is 30 ha the same as 74.1316 ac?
Yes. 30 ha = 74.1316 ac. Rounded to four decimals it is 74.13 ac.
How do I convert acres back to hectares?
Divide by 2.47105, or multiply by 0.404686: 1 acre is 0.404686 hectares. The acres to hectares page linked above lists common values the other way.
Is the ha to ac conversion exact?
1 hectare is about 2.47105 acres. The ratio is a defined constant but produces a long decimal, so this page rounds to six significant digits, which is more precision than any everyday measurement needs.