Hectares to Acres Converter
Enter the area in hectares below to convert it to acres.
Result in Acres:
Do you want to convert acres to hectares?
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How to Convert Hectares to Acres
The fastest way to convert hectares to acres is to use this simple formula:
acres = hectares × 2.471054
The area in acres is equal to the area in hectares multiplied by 2.471054. Since one acre is equal to 2.471054 hectares[1], that's the conversion ratio used in the formula.
For example, here's how to convert 5 hectares to acres using the formula above.
acres = (5 ha × 2.471054) = 12.355269 ac
How Many Acres Are in a Hectare?
There are 2.471054 acres in a hectare, which is why we use this value in the formula above.
1 ha = 2.471054 ac
Hectares and acres are both units used to measure area. Keep reading to learn more about each unit of measure.
What Is a Hectare?
One hectare is equal to 10,000 square meters,[2] or the area of a square with 100 meter sides.
The hectare is an SI accepted unit for area for use with the metric system. In the metric system, "hecto" is the prefix for 102. Hectares can be abbreviated as ha; for example, 1 hectare can be written as 1 ha.
Learn more about hectares.
What Is an Acre?
One acre is defined as the area equal to a space that is one chain (66 ft) by one furlong (660 ft), or 10 square chains.[3] That's equal to 43,560 square feet or 1/640 of a square mile for those unfamiliar with those units of measure.
The acre is a US customary and imperial unit of area. Acres can be abbreviated as ac; for example, 1 acre can be written as 1 ac.
You can use an acreage calculator to measure the area of a plot of land in acres by locating the boundaries on a map.
Learn more about acres.
Hectare to Acre Conversion Table
| Hectares | Acres |
|---|---|
| 1 ha | 2.4711 ac |
| 2 ha | 4.9421 ac |
| 3 ha | 7.4132 ac |
| 4 ha | 9.8842 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 |
| 21 ha | 51.89 ac |
| 22 ha | 54.36 ac |
| 23 ha | 56.83 ac |
| 24 ha | 59.31 ac |
| 25 ha | 61.78 ac |
| 26 ha | 64.25 ac |
| 27 ha | 66.72 ac |
| 28 ha | 69.19 ac |
| 29 ha | 71.66 ac |
| 30 ha | 74.13 ac |
| 31 ha | 76.6 ac |
| 32 ha | 79.07 ac |
| 33 ha | 81.54 ac |
| 34 ha | 84.02 ac |
| 35 ha | 86.49 ac |
| 36 ha | 88.96 ac |
| 37 ha | 91.43 ac |
| 38 ha | 93.9 ac |
| 39 ha | 96.37 ac |
| 40 ha | 98.84 ac |
References
- National Oceanic and Atmospheric Administration, U.S. Coast Pilot 6, General Information, https://nauticalcharts.noaa.gov/publications/coast-pilot/files/cp6/CPB6_C01_WEB.pdf
- Cambridge Dictionary, hectare, https://dictionary.cambridge.org/us/dictionary/english/hectare
- National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf