square chain (international) | 1 sq ch | 2 sq ch | 3 sq ch | 4 sq ch | 5 sq ch | 6 sq ch | 7 sq ch | 8 sq ch | 9 sq ch | 10 sq ch | 11 sq ch | 12 sq ch | 13 sq ch | 14 sq ch | 15 sq ch | 16 sq ch | 17 sq ch | 18 sq ch | 19 sq ch | 20 sq ch | 21 sq ch | 22 sq ch | 23 sq ch | 24 sq ch | 25 sq ch | 26 sq ch | 27 sq ch | 28 sq ch | 29 sq ch | 30 sq ch | 31 sq ch | 32 sq ch | 33 sq ch | 34 sq ch | 35 sq ch | 36 sq ch | 37 sq ch | 38 sq ch | 39 sq ch | 40 sq ch | 41 sq ch | 42 sq ch | 43 sq ch | 44 sq ch | 45 sq ch | 46 sq ch | 47 sq ch | 48 sq ch | 49 sq ch | 50 sq ch | 51 sq ch | 52 sq ch | 53 sq ch | 54 sq ch | 55 sq ch | 56 sq ch | 57 sq ch | 58 sq ch | 59 sq ch | 60 sq ch | 61 sq ch | 62 sq ch | 63 sq ch | 64 sq ch | 65 sq ch | 66 sq ch | 67 sq ch | 68 sq ch | 69 sq ch | 70 sq ch | 71 sq ch | 72 sq ch | 73 sq ch | 74 sq ch | 75 sq ch | 76 sq ch | 77 sq ch | 78 sq ch | 79 sq ch | 80 sq ch | 81 sq ch | 82 sq ch | 83 sq ch | 84 sq ch | 85 sq ch | 86 sq ch | 87 sq ch | 88 sq ch | 89 sq ch | 90 sq ch | 91 sq ch | 92 sq ch | 93 sq ch | 94 sq ch | 95 sq ch | 96 sq ch | 97 sq ch | 98 sq ch | 99 sq ch | 100 sq ch |
hectare | 0.0404686 ha | 0.0809371 ha | 0.1214057 ha | 0.1618743 ha | 0.2023428 ha | 0.2428114 ha | 0.2832799 ha | 0.3237485 ha | 0.3642171 ha | 0.4046856 ha | 0.4451542 ha | 0.4856228 ha | 0.5260913 ha | 0.5665599 ha | 0.6070285 ha | 0.6474970 ha | 0.6879656 ha | 0.7284342 ha | 0.7689027 ha | 0.8093713 ha | 0.8498398 ha | 0.8903084 ha | 0.9307770 ha | 0.9712455 ha | 1.0117141 ha | 1.0521827 ha | 1.0926512 ha | 1.1331198 ha | 1.1735884 ha | 1.2140569 ha | 1.2545255 ha | 1.2949941 ha | 1.3354626 ha | 1.3759312 ha | 1.4163997 ha | 1.4568683 ha | 1.4973369 ha | 1.5378054 ha | 1.5782740 ha | 1.6187426 ha | 1.6592111 ha | 1.6996797 ha | 1.7401483 ha | 1.7806168 ha | 1.8210854 ha | 1.8615540 ha | 1.9020225 ha | 1.9424911 ha | 1.9829596 ha | 2.0234282 ha | 2.0638968 ha | 2.1043653 ha | 2.1448339 ha | 2.1853025 ha | 2.2257710 ha | 2.2662396 ha | 2.3067082 ha | 2.3471767 ha | 2.3876453 ha | 2.4281139 ha | 2.4685824 ha | 2.5090510 ha | 2.5495195 ha | 2.5899881 ha | 2.6304567 ha | 2.6709252 ha | 2.7113938 ha | 2.7518624 ha | 2.7923309 ha | 2.8327995 ha | 2.8732681 ha | 2.9137366 ha | 2.9542052 ha | 2.9946738 ha | 3.0351423 ha | 3.0756109 ha | 3.1160794 ha | 3.1565480 ha | 3.1970166 ha | 3.2374851 ha | 3.2779537 ha | 3.3184223 ha | 3.3588908 ha | 3.3993594 ha | 3.4398280 ha | 3.4802965 ha | 3.5207651 ha | 3.5612337 ha | 3.6017022 ha | 3.6421708 ha | 3.6826393 ha | 3.7231079 ha | 3.7635765 ha | 3.8040450 ha | 3.8445136 ha | 3.8849822 ha | 3.9254507 ha | 3.9659193 ha | 4.0063879 ha | 4.0468564 ha |
square chain is a unit of area.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
square chain (international) | sq ch | ≡ 66 ft × 66 ft = 1⁄10 ac | ≡ 404.68564224 m2 | Imperial/US |
square chains (international) | hectares | square chains (international) | hectares |
---|---|---|---|
1 | ≡ 0.040468564224 | 6 | ≡ 0.242811385344 |
2 | ≡ 0.080937128448 | 7 | ≡ 0.283279949568 |
3 | ≡ 0.121405692672 | 8 | ≡ 0.323748513792 |
4 | ≡ 0.161874256896 | 9 | ≡ 0.364217078016 |
5 | ≡ 0.20234282112 | 10 | ≡ 0.40468564224 |
The hectare (/ˈhɛktɛər/ or /ˈhɛktɑːr/), although not a unit of SI, is the only named unit of area that is accepted for use within the SI. In practice the hectare is fully derived from the SI, being equivalent to a square hectometre. It is widely used throughout the world for the measurement of large areas of land, and it is the legal unit of measure in domains concerned with land ownership, planning, and management, including law (land deeds), agriculture, forestry, and town planning throughout the European Union. The United Kingdom, United States, Burma, and to some extent Canada instead use the acre.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
hectare | ha | ≡ 10000 m2 | ≡ 10000 m2 | Metric system SI |
hectares | square chains (international) | hectares | square chains (international) |
---|---|---|---|
1 | ≡ 24.710538146717 | 6 | ≡ 148.2632288803 |
2 | ≡ 49.421076293433 | 7 | ≡ 172.97376702702 |
3 | ≡ 74.13161444015 | 8 | ≡ 197.68430517373 |
4 | ≡ 98.842152586866 | 9 | ≡ 222.39484332045 |
5 | ≡ 123.55269073358 | 10 | ≡ 247.10538146717 |
square chains (international) | hectares |
---|---|
1 | ≡ 0.0404686 |
24.7105381 | ≡ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |