Acres to hectares

hectares = acres × 0.40468564

How to convert acres to hectares

One acre is 0.40468564 hectares, so multiply the number of acres by 0.40468564. For example, 20 acres is 20 × 0.40468564 = 8.093713 hectares. To go back, divide by the same number, or multiply by 2.471054.

Quick estimate

Multiplying by about 0.4 gets within 1.2% of the exact answer, which is enough to check that a result makes sense.

Where it comes up

Area conversions come up when buying flooring, paint or turf, comparing house and flat sizes, and measuring land and gardens.

acres	hectares
1 ac	0.40468564 ha
2 ac	0.80937128 ha
3 ac	1.214057 ha
4 ac	1.618743 ha
5 ac	2.023428 ha
6 ac	2.428114 ha
7 ac	2.832799 ha
8 ac	3.237485 ha
9 ac	3.642171 ha
10 ac	4.046856 ha
11 ac	4.451542 ha
12 ac	4.856228 ha
13 ac	5.260913 ha
14 ac	5.665599 ha
15 ac	6.070285 ha
16 ac	6.47497 ha
17 ac	6.879656 ha
18 ac	7.284342 ha
19 ac	7.689027 ha
20 ac	8.093713 ha
25 ac	10.117141 ha
30 ac	12.140569 ha
40 ac	16.187426 ha
50 ac	20.234282 ha
60 ac	24.281139 ha
70 ac	28.327995 ha
75 ac	30.351423 ha
80 ac	32.374851 ha
90 ac	36.421708 ha
100 ac	40.468564 ha
120 ac	48.562277 ha
150 ac	60.702846 ha
200 ac	80.937128 ha
250 ac	101.171411 ha
300 ac	121.405693 ha
400 ac	161.874257 ha
500 ac	202.342821 ha
750 ac	303.514232 ha
1,000 ac	404.685642 ha
1,500 ac	607.028463 ha
2,000 ac	809.371284 ha
5,000 ac	2,023.43 ha
10,000 ac	4,046.86 ha

Questions

How many hectares are in a acre?

0.40468564 hectares.

How do I convert acres to hectares in a spreadsheet?

Put the value in A1 and type =A1*0.40468564, then fill the formula down the column.

Are the values in the table exact?

They are calculated from the exact definitions of the units and rounded only for display. Open any row for the full working.