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What does this converter do?
One hectare is 2.471 acres (1 ha = 10,000 m²; 1 acre = 4,046.86 m²). To convert, multiply hectares by 2.47105 — 2.5 ha is 6.178 acres — or multiply acres by 0.404686 to get hectares.
- The hectare is metric (100 m × 100 m); the acre is imperial (43,560 ft², about 208.7 ft per side).
- A hectare is roughly 2.5 acres — about two and a half football pitches of 0.71 ha each.
- Both units measure land area only; neither is an SI base unit, but the hectare is accepted for legal land use in metric countries.
Quick conversion table
| Hectares | Acres | Acres | Hectares | |
|---|---|---|---|---|
| 0.5 ha | 1.24 ac | 1 ac | 0.40 ha | |
| 1 ha | 2.47 ac | 5 ac | 2.02 ha | |
| 2 ha | 4.94 ac | 10 ac | 4.05 ha | |
| 2.5 ha | 6.18 ac | 20 ac | 8.09 ha | |
| 5 ha | 12.36 ac | 40 ac | 16.19 ha | |
| 10 ha | 24.71 ac | 100 ac | 40.47 ha | |
| 20 ha | 49.42 ac | |||
| 50 ha | 123.55 ac | |||
| 100 ha | 247.11 ac |
Sizes you can picture
A standard FIFA football pitch (105 m × 68 m) is 0.714 hectares — 1.76 acres. So a hectare is about one and a half football fields; an acre is about three-quarters of one. A typical city block in Manhattan (about 80 m × 274 m) is 2.19 hectares or 5.4 acres.
For farmland context: a 100-acre family farm is 40.47 ha, and the 1,000-hectare holdings common in grain-belt agriculture are roughly 2,470 acres.
Where each unit is used
The hectare is the official land unit across the EU, UK land registry (for larger parcels), Canada, Australia, and most of the world. The acre dominates US real estate, and survives informally in UK and Ireland farm talk.
Because listings increasingly mix the two — a European estate described in hectares for an American buyer — the exact factor matters: at 1,000 ha scale, rounding 2.471 to 2.5 drifts the answer by 29 acres.
How this calculator works
Formula
1 hectare = 10,000 m² exactly; 1 acre = 4,046.86 m² (43,560 ft²). So acres = hectares × 10,000 ÷ 4,046.86 ≈ hectares × 2.47105, and hectares = acres × 0.404686.
Worked example
A 2.5-hectare orchard: 2.5 × 2.47105 = 6.178 acres. In the other direction, a 10-acre parcel is 10 × 0.404686 = 4.047 hectares.
Assumptions to verify
- Acre uses the US survey definition of 4,046.86 m² (43,560 ft²); results may differ in the last decimal from converters that round to 4,047.
- Conversions are exact ratios — no terrain or shape corrections apply.
- The input value is accepted in hectares, acres, or square metres via the unit selector.
Frequently asked questions
How many acres is 1 hectare?
2.471 acres (1 ha = 10,000 m², 1 acre = 4,046.86 m²). Multiply hectares by 2.47105.
How many hectares is 1 acre?
0.4047 hectares. Multiply acres by 0.404686 — or divide acres by 2.47105.
Which is bigger, a hectare or an acre?
A hectare — about 2.47 times bigger. A hectare is a 100 m × 100 m square; an acre is about 208.7 ft × 208.7 ft.
Is an acre metric or imperial?
Imperial/US customary: 43,560 square feet, originally the area a yoke of oxen could plough in a day.
How big is a hectare in football fields?
About 1.4 FIFA-standard pitches (0.714 ha each), or 2.47 acres.
Why do I get slightly different values on other converters?
Many round the acre to 4,047 m² or the factor to 2.47. This tool uses the exact survey definition (4,046.86 m²) — the difference only matters at large scales.
Does the tool convert the other direction too?
Yes — pick the unit you are converting from and enter the value; hectares, acres, and square metres all work in either direction.
Cite this tool
BoringToolsKit. “Hectare to Acre Converter.” boringtoolskit.com/hectare-acre-converter/ (reviewed 2026-09-20). Free to reference in articles, syllabi, and answer posts with a link.
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