hectare | 1 ha | 2 ha | 3 ha | 4 ha | 5 ha | 6 ha | 7 ha | 8 ha | 9 ha | 10 ha | 11 ha | 12 ha | 13 ha | 14 ha | 15 ha | 16 ha | 17 ha | 18 ha | 19 ha | 20 ha | 21 ha | 22 ha | 23 ha | 24 ha | 25 ha | 26 ha | 27 ha | 28 ha | 29 ha | 30 ha | 31 ha | 32 ha | 33 ha | 34 ha | 35 ha | 36 ha | 37 ha | 38 ha | 39 ha | 40 ha | 41 ha | 42 ha | 43 ha | 44 ha | 45 ha | 46 ha | 47 ha | 48 ha | 49 ha | 50 ha | 51 ha | 52 ha | 53 ha | 54 ha | 55 ha | 56 ha | 57 ha | 58 ha | 59 ha | 60 ha | 61 ha | 62 ha | 63 ha | 64 ha | 65 ha | 66 ha | 67 ha | 68 ha | 69 ha | 70 ha | 71 ha | 72 ha | 73 ha | 74 ha | 75 ha | 76 ha | 77 ha | 78 ha | 79 ha | 80 ha | 81 ha | 82 ha | 83 ha | 84 ha | 85 ha | 86 ha | 87 ha | 88 ha | 89 ha | 90 ha | 91 ha | 92 ha | 93 ha | 94 ha | 95 ha | 96 ha | 97 ha | 98 ha | 99 ha | 100 ha |
square decameter | 100 dam2 | 200 dam2 | 300 dam2 | 400 dam2 | 500 dam2 | 600 dam2 | 700 dam2 | 800 dam2 | 900 dam2 | 1 000 dam2 | 1 100 dam2 | 1 200 dam2 | 1 300 dam2 | 1 400 dam2 | 1 500 dam2 | 1 600 dam2 | 1 700 dam2 | 1 800 dam2 | 1 900 dam2 | 2 000 dam2 | 2 100 dam2 | 2 200 dam2 | 2 300 dam2 | 2 400 dam2 | 2 500 dam2 | 2 600 dam2 | 2 700 dam2 | 2 800 dam2 | 2 900 dam2 | 3 000 dam2 | 3 100 dam2 | 3 200 dam2 | 3 300 dam2 | 3 400 dam2 | 3 500 dam2 | 3 600 dam2 | 3 700 dam2 | 3 800 dam2 | 3 900 dam2 | 4 000 dam2 | 4 100 dam2 | 4 200 dam2 | 4 300 dam2 | 4 400 dam2 | 4 500 dam2 | 4 600 dam2 | 4 700 dam2 | 4 800 dam2 | 4 900 dam2 | 5 000 dam2 | 5 100 dam2 | 5 200 dam2 | 5 300 dam2 | 5 400 dam2 | 5 500 dam2 | 5 600 dam2 | 5 700 dam2 | 5 800 dam2 | 5 900 dam2 | 6 000 dam2 | 6 100 dam2 | 6 200 dam2 | 6 300 dam2 | 6 400 dam2 | 6 500 dam2 | 6 600 dam2 | 6 700 dam2 | 6 800 dam2 | 6 900 dam2 | 7 000 dam2 | 7 100 dam2 | 7 200 dam2 | 7 300 dam2 | 7 400 dam2 | 7 500 dam2 | 7 600 dam2 | 7 700 dam2 | 7 800 dam2 | 7 900 dam2 | 8 000 dam2 | 8 100 dam2 | 8 200 dam2 | 8 300 dam2 | 8 400 dam2 | 8 500 dam2 | 8 600 dam2 | 8 700 dam2 | 8 800 dam2 | 8 900 dam2 | 9 000 dam2 | 9 100 dam2 | 9 200 dam2 | 9 300 dam2 | 9 400 dam2 | 9 500 dam2 | 9 600 dam2 | 9 700 dam2 | 9 800 dam2 | 9 900 dam2 | 10 000 dam2 |
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 decameters | hectares | square decameters |
---|---|---|---|
1 | = 100 | 6 | = 600 |
2 | = 200 | 7 | = 700 |
3 | = 300 | 8 | = 800 |
4 | = 400 | 9 | = 900 |
5 | = 500 | 10 | = 1000 |
Square decametre (International spelling as used by the International Bureau of Weights and Measures) or square decameter (American spelling) or are, symbol dam2, is the unit of area or surface area.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
square decameter | dam2 | ≡ 1 dam × 1 dam ≡ 10 m × 10 m | = 102 m2 | Metric system SI |
square decameters | hectares | square decameters | hectares |
---|---|---|---|
1 | = 0.01 | 6 | = 0.06 |
2 | = 0.02 | 7 | = 0.07 |
3 | = 0.03 | 8 | = 0.08 |
4 | = 0.04 | 9 | = 0.09 |
5 | = 0.05 | 10 | = 0.1 |
hectares | square decameters |
---|---|
1 | = 100 |
0.01 | = 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 …) |