Convert Acre to Hectare
Live bidirectional calculator for Acres (ac) and Hectares (ha) with verified formula and conversion charts.
Area10 units
How the Calculation Works (Linear Scaling)
Since 1 Hectare = 2.471054 Acres, divide the value in Acres by 2.471054.
Acre to Hectare Conversion Table
Precomputed values for quick reference and printing.
| Acre | Hectare |
|---|---|
| 1 ac | 0.4047 ha |
| 2 ac | 0.8094 ha |
| 3 ac | 1.2141 ha |
| 4 ac | 1.6187 ha |
| 5 ac | 2.0234 ha |
| 6 ac | 2.4281 ha |
| 7 ac | 2.8328 ha |
| 8 ac | 3.2375 ha |
| 9 ac | 3.6422 ha |
| 10 ac | 4.0469 ha |
| 15 ac | 6.0703 ha |
| 20 ac | 8.0937 ha |
| 25 ac | 10.1171 ha |
| 30 ac | 12.1406 ha |
| 40 ac | 16.1874 ha |
| 50 ac | 20.2343 ha |
| 75 ac | 30.3514 ha |
| 100 ac | 40.4686 ha |
| Hectare | Acre |
|---|---|
| 1 ha | 2.4711 ac |
| 2 ha | 4.9421 ac |
| 3 ha | 7.4132 ac |
| 4 ha | 9.8842 ac |
| 5 ha | 12.3553 ac |
| 6 ha | 14.8263 ac |
| 7 ha | 17.2974 ac |
| 8 ha | 19.7684 ac |
| 9 ha | 22.2395 ac |
| 10 ha | 24.7105 ac |
| 15 ha | 37.0658 ac |
| 20 ha | 49.4211 ac |
| 25 ha | 61.7763 ac |
| 30 ha | 74.1316 ac |
| 40 ha | 98.8422 ac |
| 50 ha | 123.5527 ac |
| 75 ha | 185.329 ac |
| 100 ha | 247.1054 ac |
About Acre (ac)
The international acre is defined as exactly 43,560 square feet (4,046.8564224 square meters).
History: Historically the amount of land tillable by one yoke of oxen in one day.
Common Uses: Real estate, residential plots, farmland, and forestry in the US and UK.
About Hectare (ha)
A metric unit of area equal to a square with 100-meter sides (10,000 mยฒ or 0.01 kmยฒ).
History: Created in 1795 in France from the Greek "hekaton" (hundred) and "are". Recognized for land measurement.
Common Uses: Agriculture, forestry, municipal parks, and rural land deeds worldwide.
โ Frequently Asked Questions
How many Hectares are in 1 Acre?
There are exactly 0.404686 Hectares in 1 Acre (1 ac = 0.404686 ha).
What is the formula to convert Acre to Hectare?
The formula is: Hectare = Acre / 2.471054. Since 1 Hectare = 2.471054 Acres, divide the value in Acres by 2.471054.
How do I convert 1 ac to ha manually?
To convert 1 ac to ha: apply the formula Hectare = Acre / 2.471054. Substituting gives: 1 / 2.471054 = 0.4047 ha.