How Many Acres Are in a Hectare?

Quick answer: one hectare equals 2.4711 acres (and one acre is 0.404686 hectares). To convert any value, multiply your hectares by 2.47105381.

Whether you're reading a foreign spec sheet, following a recipe from another country or checking homework, converting hectares to acres is one of those small skills that pays off constantly. Below you'll find the exact conversion factor, an easy mental approximation, step-by-step examples and full lookup tables.

Understanding the units

Hectare (ha)

The hectare is a 100 m × 100 m square (10,000 m²), the metric unit of farmland and forestry worldwide. One hectare is about 2.47 acres.

Acre (ac)

The acre — historically the area a yoke of oxen could plow in one day — equals 43,560 square feet and remains the standard US unit for land parcels.

The exact conversion formula

acres = hectares × 2.4710538147

How to convert hectares to acres, step by step

Take your value in hectares.
Multiply by 2.47105381 (the number of acres in one hectare).
Round sensibly for your context — engineering needs more decimals than a shopping list.

Worked examples:

5 hectares × 2.471054 = 12.3553 acres
12 hectares × 2.471054 = 29.6526 acres
50 hectares × 2.471054 = 123.5527 acres
365 hectares × 2.471054 = 901.9346 acres

Real-world reference points

Handy area anchors: a sheet of A4 paper is 0.062 m², a parking space about 12 m², a tennis court 261 m², an American football field 5,351 m² (1.32 acres), and a soccer pitch roughly 0.7 hectares. An acre — 43,560 square feet — is about 40% of a hectare.

Quick lookup: 1 to 100 hectares in acres

Scan this list for the exact value you need — each line is computed with the precise conversion factor, not an approximation.

1 hectare = 2.4711 acres
2 hectares = 4.9421 acres
3 hectares = 7.4132 acres
4 hectares = 9.8842 acres
5 hectares = 12.3553 acres
6 hectares = 14.8263 acres
7 hectares = 17.2974 acres
8 hectares = 19.7684 acres
9 hectares = 22.2395 acres
10 hectares = 24.7105 acres
11 hectares = 27.1816 acres
12 hectares = 29.6526 acres
13 hectares = 32.1237 acres
14 hectares = 34.5948 acres
15 hectares = 37.0658 acres
16 hectares = 39.5369 acres
17 hectares = 42.0079 acres
18 hectares = 44.479 acres
19 hectares = 46.95 acres
20 hectares = 49.4211 acres
21 hectares = 51.8921 acres
22 hectares = 54.3632 acres
23 hectares = 56.8342 acres
24 hectares = 59.3053 acres
25 hectares = 61.7763 acres
26 hectares = 64.2474 acres
27 hectares = 66.7185 acres
28 hectares = 69.1895 acres
29 hectares = 71.6606 acres
30 hectares = 74.1316 acres
31 hectares = 76.6027 acres
32 hectares = 79.0737 acres
33 hectares = 81.5448 acres
34 hectares = 84.0158 acres
35 hectares = 86.4869 acres
36 hectares = 88.9579 acres
37 hectares = 91.429 acres
38 hectares = 93.9 acres
39 hectares = 96.3711 acres
40 hectares = 98.8422 acres
41 hectares = 101.3132 acres
42 hectares = 103.7843 acres
43 hectares = 106.2553 acres
44 hectares = 108.7264 acres
45 hectares = 111.1974 acres
46 hectares = 113.6685 acres
47 hectares = 116.1395 acres
48 hectares = 118.6106 acres
49 hectares = 121.0816 acres
50 hectares = 123.5527 acres
51 hectares = 126.0237 acres
52 hectares = 128.4948 acres
53 hectares = 130.9659 acres
54 hectares = 133.4369 acres
55 hectares = 135.908 acres
56 hectares = 138.379 acres
57 hectares = 140.8501 acres
58 hectares = 143.3211 acres
59 hectares = 145.7922 acres
60 hectares = 148.2632 acres
61 hectares = 150.7343 acres
62 hectares = 153.2053 acres
63 hectares = 155.6764 acres
64 hectares = 158.1474 acres
65 hectares = 160.6185 acres
66 hectares = 163.0896 acres
67 hectares = 165.5606 acres
68 hectares = 168.0317 acres
69 hectares = 170.5027 acres
70 hectares = 172.9738 acres
71 hectares = 175.4448 acres
72 hectares = 177.9159 acres
73 hectares = 180.3869 acres
74 hectares = 182.858 acres
75 hectares = 185.329 acres
76 hectares = 187.8001 acres
77 hectares = 190.2711 acres
78 hectares = 192.7422 acres
79 hectares = 195.2133 acres
80 hectares = 197.6843 acres
81 hectares = 200.1554 acres
82 hectares = 202.6264 acres
83 hectares = 205.0975 acres
84 hectares = 207.5685 acres
85 hectares = 210.0396 acres
86 hectares = 212.5106 acres
87 hectares = 214.9817 acres
88 hectares = 217.4527 acres
89 hectares = 219.9238 acres
90 hectares = 222.3948 acres
91 hectares = 224.8659 acres
92 hectares = 227.337 acres
93 hectares = 229.808 acres
94 hectares = 232.2791 acres
95 hectares = 234.7501 acres
96 hectares = 237.2212 acres
97 hectares = 239.6922 acres
98 hectares = 242.1633 acres
99 hectares = 244.6343 acres
100 hectares = 247.1054 acres

Hectare to Acre conversion table

The extended table below covers fractional and large values for quick reference.

Hectare (ha)	Acre (ac)
0.01 ha	0.024711 ac
0.05 ha	0.123553 ac
0.1 ha	0.247105 ac
0.2 ha	0.494211 ac
0.25 ha	0.617763 ac
0.3 ha	0.741316 ac
0.4 ha	0.988422 ac
0.5 ha	1.2355 ac
0.75 ha	1.8533 ac
1 ha	2.4711 ac
1.25 ha	3.0888 ac
1.5 ha	3.7066 ac
1.75 ha	4.3243 ac
2 ha	4.9421 ac
2.5 ha	6.1776 ac
3 ha	7.4132 ac
3.5 ha	8.6487 ac
4 ha	9.8842 ac
4.5 ha	11.1197 ac
5 ha	12.3553 ac
6 ha	14.8263 ac
7 ha	17.2974 ac
8 ha	19.7684 ac
9 ha	22.2395 ac
10 ha	24.7105 ac
11 ha	27.1816 ac
12 ha	29.6526 ac
13 ha	32.1237 ac
14 ha	34.5948 ac
15 ha	37.0658 ac
16 ha	39.5369 ac
17 ha	42.0079 ac
18 ha	44.479 ac
19 ha	46.95 ac
20 ha	49.4211 ac
22 ha	54.3632 ac
24 ha	59.3053 ac
25 ha	61.7763 ac
26 ha	64.2474 ac
28 ha	69.1895 ac
30 ha	74.1316 ac
32 ha	79.0737 ac
35 ha	86.4869 ac
40 ha	98.8422 ac
45 ha	111.1974 ac
50 ha	123.5527 ac
55 ha	135.908 ac
60 ha	148.2632 ac
65 ha	160.6185 ac
70 ha	172.9738 ac
75 ha	185.329 ac
80 ha	197.6843 ac
85 ha	210.0396 ac
90 ha	222.3948 ac
95 ha	234.7501 ac
100 ha	247.1054 ac
110 ha	271.8159 ac
120 ha	296.5265 ac
125 ha	308.8817 ac
150 ha	370.6581 ac
175 ha	432.4344 ac
200 ha	494.2108 ac
250 ha	617.7635 ac
300 ha	741.3161 ac
350 ha	864.8688 ac
400 ha	988.4215 ac
450 ha	1,111.97 ac
500 ha	1,235.53 ac
600 ha	1,482.63 ac
700 ha	1,729.74 ac
750 ha	1,853.29 ac
800 ha	1,976.84 ac
900 ha	2,223.95 ac
1,000 ha	2,471.05 ac
1,500 ha	3,706.58 ac
2,000 ha	4,942.11 ac
2,500 ha	6,177.63 ac
5,000 ha	12,355.27 ac
10,000 ha	24,710.54 ac

Reverse table: acres to hectares

Acre (ac)	Hectare (ha)
0.1 ac	0.040469 ha
0.25 ac	0.101171 ha
0.5 ac	0.202343 ha
1 ac	0.404686 ha
2 ac	0.809371 ha
3 ac	1.2141 ha
4 ac	1.6187 ha
5 ac	2.0234 ha
6 ac	2.4281 ha
7 ac	2.8328 ha
8 ac	3.2375 ha
9 ac	3.6422 ha
10 ac	4.0469 ha
12 ac	4.8562 ha
15 ac	6.0703 ha
20 ac	8.0937 ha
25 ac	10.1171 ha
30 ac	12.1406 ha
40 ac	16.1874 ha
50 ac	20.2343 ha
60 ac	24.2811 ha
75 ac	30.3514 ha
100 ac	40.4686 ha
150 ac	60.7028 ha
200 ac	80.9371 ha
250 ac	101.1714 ha
500 ac	202.3428 ha
750 ac	303.5142 ha
1,000 ac	404.6856 ha
5,000 ac	2,023.43 ha

Reverse lookup: acres in hectares

1 acre = 0.404686 hectares
2 acres = 0.809371 hectares
3 acres = 1.2141 hectares
4 acres = 1.6187 hectares
5 acres = 2.0234 hectares
6 acres = 2.4281 hectares
7 acres = 2.8328 hectares
8 acres = 3.2375 hectares
9 acres = 3.6422 hectares
10 acres = 4.0469 hectares
11 acres = 4.4515 hectares
12 acres = 4.8562 hectares
13 acres = 5.2609 hectares
14 acres = 5.6656 hectares
15 acres = 6.0703 hectares
16 acres = 6.475 hectares
17 acres = 6.8797 hectares
18 acres = 7.2843 hectares
19 acres = 7.689 hectares
20 acres = 8.0937 hectares
21 acres = 8.4984 hectares
22 acres = 8.9031 hectares
23 acres = 9.3078 hectares
24 acres = 9.7125 hectares
25 acres = 10.1171 hectares
26 acres = 10.5218 hectares
27 acres = 10.9265 hectares
28 acres = 11.3312 hectares
29 acres = 11.7359 hectares
30 acres = 12.1406 hectares

Common mistakes to avoid

The classic area error is squaring confusion: there are 3.28 feet in a meter but 10.76 square feet in a square meter — you must square the linear factor. Similarly, doubling a room's dimensions quadruples its area. Regional land units (the Indian "gaj", the Thai "rai") add another layer worth double-checking.

Precision and rounding

The tables above round to a few decimal places for readability. When you need full precision — engineering drawings, scientific work, legal documents — use the exact factor 2.4710538147 and round only at the very end of your calculation. Rounding intermediate steps is the most common source of conversion drift, especially when several conversions are chained together.

Convert it instantly

Skip the arithmetic entirely: our free Hectare to Acre converter computes any value as you type, and the Acre to Hectare converter handles the reverse direction. For every other area unit, see the complete area conversion guide.

Frequently asked questions

How many acres are in one hectare?

Exactly 2.4711 acres. This factor comes from the internationally agreed definitions of both units.

How do I convert acres back to hectares?

Divide by 2.47105381 — or equivalently multiply by 0.40468564, since one acre equals 0.404686 hectares.

Can I do this conversion in my head?

For estimates, round the factor: one hectare ≈ 2.47 acres. That's usually close enough for shopping or travel; reach for the exact factor when precision matters.

What is 2.5 hectares in acres?

2.5 hectares equal 6.1776 acres. Multiply 2.5 by the factor 2.471054.

What is 500 hectares in acres?

500 hectares equal 1,235.53 acres (500 × 2.471054).

Where does the conversion factor come from?

Both units are legally defined against the same SI base unit (the square meter), so the factor 2.4710538147 is a mathematical consequence of those definitions — it is exact, permanent, and the same everywhere in the world.

How Many Acres Are in a Hectare? (ha to ac Explained)