Direct conversion
Convert acre [ac] to hectare [ha] instantly with formula, examples, chart, and FAQs.
1 acre [ac] = 0.404686 hectare [ha]
1 acre [ac] = 0.404686 hectare [ha]
Example: 1 acre [ac] equals 0.404686 hectare [ha].
Area conversions are derived from squared length relationships, using square metre as the reference unit and fixed factors such as 1 square foot = 0.09290304 square metre.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The acre is a land area unit equal to 43,560 square feet or about 4046.856 square meters.
HistoryThe acre has agricultural origins and became a standard land measure in customary systems.
Current useAcres are used for land parcels, farms, real estate, parks, and property planning.
The hectare is a metric land area unit equal to 10,000 square meters.
HistoryHectares were adopted with metric land measurement because they are convenient for fields and parcels.
Current useHectares are used for agriculture, land records, forestry, environmental reporting, and large property areas.
| acre [ac] | hectare [ha] |
|---|---|
| 1 | 0.404686 |
| 2 | 0.809371 |
| 5 | 2.023428 |
| 10 | 4.046856 |
| 20 | 8.093713 |
| 25 | 10.117141 |
| 50 | 20.234282 |
| 100 | 40.468564 |
| 1000 | 404.685642 |
Use this formula: 1 acre [ac] = 0.404686 hectare [ha] Enter your value in the calculator and the result updates instantly.
1 acre [ac] equals 0.404686 hectare [ha].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.