Convert Hectare (ha) to Acre (ac)
Use our interactive area calculator to convert any value in real time, in both directions.
About the Hectare → Acre conversion
Conversions of area are essential in many everyday and technical contexts. Using consistent units and accurate factors ensures precise results.
The exact factor between Hectare and Acre is 2.47105381. This means that 1 ha equals 2.47105381 ac. To convert any value, just multiply. For the reverse direction, divide.
Formula
Conversion table
| Hectare (ha) | Acre (ac) |
|---|---|
| 1 | 2.4711 |
| 2 | 4.9421 |
| 5 | 12.3553 |
| 10 | 24.7105 |
| 25 | 61.7763 |
| 50 | 123.5527 |
| 100 | 247.1054 |
| 250 | 617.7635 |
| 500 | 1235.5269 |
| 1000 | 2471.0538 |
Reverse conversion
1 ac = 0.40468564 ha
Frequently asked questions
How do I convert Hectare to Acre?
Multiply the value in ha by the factor 2.47105381. That is, 1 ha = 2.47105381 ac. For the reverse conversion, use the factor 0.40468564.
What is the difference between Hectare and Acre?
Both measure area, but on different scales. Hectare is used in some contexts while Acre in others. To compare, always use the conversion factor: 1 ha = 2.47105381 ac.
Are the factors used official?
Yes. The conversion factors come from the International System of Units (SI) and recognized international standards (NIST, BIPM). The result is accurate for technical, scientific, and commercial use.
Can I print this page?
Yes. The page is static and prints well in any browser. The table of common values is useful as a printed reference for workshops, kitchens, and classrooms.