Acres to Hectares Converter
Convert acres to hectares instantly with this free acres to hectares converter. Enter any value to get an accurate area conversion, plus the formula, the conversion factor and a full reference table.
What is 1 acre in hectares?
1 acre is equal to 0.404685642 hectares.
1 ÷ 2.47105381 = 0.404685642 hectares
1 acre = 0.4046856422 hectares
Acres to Hectares formula
ha = ac ÷ 2.47105381
The acres to hectares conversion factor is 0.40468564224, which is exact by definition. 1 acre = 0.40468564224 hectares, and 1 hectare = 2.47105381467 acres.
Worked examples
- 2 acres = 0.809371284 hectares — 2 ÷ 2.47105381 = 0.809371284 hectares
- 6 acres = 2.42811385 hectares — 6 ÷ 2.47105381 = 2.42811385 hectares
- 10 acres = 4.04685642 hectares — 10 ÷ 2.47105381 = 4.04685642 hectares
Acres to Hectares conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Acres (ac) | Hectares (ha) |
|---|---|
| 1 ac | 0.40468564 ha |
| 2 ac | 0.80937128 ha |
| 3 ac | 1.2140569 ha |
| 4 ac | 1.6187426 ha |
| 5 ac | 2.0234282 ha |
| 6 ac | 2.4281139 ha |
| 7 ac | 2.8327995 ha |
| 8 ac | 3.2374851 ha |
| 9 ac | 3.6421708 ha |
| 10 ac | 4.0468564 ha |
| 12 ac | 4.8562277 ha |
| 15 ac | 6.0702846 ha |
| 20 ac | 8.0937128 ha |
| 25 ac | 10.117141 ha |
| 30 ac | 12.140569 ha |
| 50 ac | 20.234282 ha |
| 75 ac | 30.351423 ha |
| 100 ac | 40.468564 ha |
| 500 ac | 202.34282 ha |
| 1,000 ac | 404.68564 ha |
When you need to convert acres to hectares
- Comparing property and land listings, which use square feet in the US and square metres almost everywhere else.
- Estimating flooring, turf or paint coverage from a supplier's spec.
- Reading farm or plot sizes given in acres or hectares.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
Acre (ac)
- An acre is roughly a US football field without the end zones
Hectare (ha)
- A hectare is about two and a half acres
- A hectare is 100 m × 100 m
Common mistakes to avoid
- Dividing when you should multiply. Because 1 acre = 0.404686 hectares, the answer should be smaller than the number you started with.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Round only at the end, and only to the precision your task actually needs. The converter above keeps full double precision internally and rounds for display.
How these units are defined
- Acre (ac): 43,560 square feet; the standard land-area unit in the US and UK. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Hectare (ha): 10,000 square meters; the metric land-area unit. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 acre in hectares?
- 1 acre is equal to 0.404685642 hectares.
- How many acres are in one hectare?
- There are 2.47105381 acres in 1 hectare.
- How do you convert acres to hectares?
- Multiply the number of acres by 0.404685642 — or use the formula ha = ac ÷ 2.47105381.
- What is 6 acres in hectares?
- 6 acres is 2.42811385 hectares. 6 ÷ 2.47105381 = 2.42811385 hectares.
- Is the acres to hectares conversion exact?
- Yes. The relationship is fixed by definition, so 0.40468564224 is an exact conversion factor — only the displayed result is rounded.