Hectares to Acres Conversion

Enter the area in hectares below to get the value converted to acres.

SWAP UNITS
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1 ha = 2.471054 ac
Do you want to convert acres to hectares?

How to Convert Hectares to Acres

conversion scale showing hectares and equivalent acres area values

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.

5 ha = (5 × 2.471054) = 12.355269 ac

Hectares and acres are both units used to measure area. Keep reading to learn more about each unit of measure.

Hectares

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.

Acres

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 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.

Try our acreage calculator to find the area of a plot of land in acres by locating the boundaries on a map.

Hectare to Acre Conversion Table

Hectare measurements converted to acres
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

  1. 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
  2. Cambridge Dictionary, hectare, https://dictionary.cambridge.org/us/dictionary/english/hectare
  3. 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