square hectometer | 1 hm2 | 2 hm2 | 3 hm2 | 4 hm2 | 5 hm2 | 6 hm2 | 7 hm2 | 8 hm2 | 9 hm2 | 10 hm2 | 11 hm2 | 12 hm2 | 13 hm2 | 14 hm2 | 15 hm2 | 16 hm2 | 17 hm2 | 18 hm2 | 19 hm2 | 20 hm2 | 21 hm2 | 22 hm2 | 23 hm2 | 24 hm2 | 25 hm2 | 26 hm2 | 27 hm2 | 28 hm2 | 29 hm2 | 30 hm2 | 31 hm2 | 32 hm2 | 33 hm2 | 34 hm2 | 35 hm2 | 36 hm2 | 37 hm2 | 38 hm2 | 39 hm2 | 40 hm2 | 41 hm2 | 42 hm2 | 43 hm2 | 44 hm2 | 45 hm2 | 46 hm2 | 47 hm2 | 48 hm2 | 49 hm2 | 50 hm2 | 51 hm2 | 52 hm2 | 53 hm2 | 54 hm2 | 55 hm2 | 56 hm2 | 57 hm2 | 58 hm2 | 59 hm2 | 60 hm2 | 61 hm2 | 62 hm2 | 63 hm2 | 64 hm2 | 65 hm2 | 66 hm2 | 67 hm2 | 68 hm2 | 69 hm2 | 70 hm2 | 71 hm2 | 72 hm2 | 73 hm2 | 74 hm2 | 75 hm2 | 76 hm2 | 77 hm2 | 78 hm2 | 79 hm2 | 80 hm2 | 81 hm2 | 82 hm2 | 83 hm2 | 84 hm2 | 85 hm2 | 86 hm2 | 87 hm2 | 88 hm2 | 89 hm2 | 90 hm2 | 91 hm2 | 92 hm2 | 93 hm2 | 94 hm2 | 95 hm2 | 96 hm2 | 97 hm2 | 98 hm2 | 99 hm2 | 100 hm2 |
barn | 1.0 × 1032 b | 2.0 × 1032 b | 3.0 × 1032 b | 4.0 × 1032 b | 5.0 × 1032 b | 6.0 × 1032 b | 7.0 × 1032 b | 8.0 × 1032 b | 9.0 × 1032 b | 1.0 × 1033 b | 1.1 × 1033 b | 1.2 × 1033 b | 1.3 × 1033 b | 1.4 × 1033 b | 1.5 × 1033 b | 1.6 × 1033 b | 1.7 × 1033 b | 1.8 × 1033 b | 1.9 × 1033 b | 2.0 × 1033 b | 2.1 × 1033 b | 2.2 × 1033 b | 2.3 × 1033 b | 2.4 × 1033 b | 2.5 × 1033 b | 2.6 × 1033 b | 2.7 × 1033 b | 2.8 × 1033 b | 2.9 × 1033 b | 3.0 × 1033 b | 3.1 × 1033 b | 3.2 × 1033 b | 3.3 × 1033 b | 3.4 × 1033 b | 3.5 × 1033 b | 3.6 × 1033 b | 3.7 × 1033 b | 3.8 × 1033 b | 3.9 × 1033 b | 4.0 × 1033 b | 4.1 × 1033 b | 4.2 × 1033 b | 4.3 × 1033 b | 4.4 × 1033 b | 4.5 × 1033 b | 4.6 × 1033 b | 4.7 × 1033 b | 4.8 × 1033 b | 4.9 × 1033 b | 5.0 × 1033 b | 5.1 × 1033 b | 5.2 × 1033 b | 5.3 × 1033 b | 5.4 × 1033 b | 5.5 × 1033 b | 5.6 × 1033 b | 5.7 × 1033 b | 5.8 × 1033 b | 5.9 × 1033 b | 6.0 × 1033 b | 6.1 × 1033 b | 6.2 × 1033 b | 6.3 × 1033 b | 6.4 × 1033 b | 6.5 × 1033 b | 6.6 × 1033 b | 6.7 × 1033 b | 6.8 × 1033 b | 6.9 × 1033 b | 7.0 × 1033 b | 7.1 × 1033 b | 7.2 × 1033 b | 7.3 × 1033 b | 7.4 × 1033 b | 7.5 × 1033 b | 7.6 × 1033 b | 7.7 × 1033 b | 7.8 × 1033 b | 7.9 × 1033 b | 8.0 × 1033 b | 8.1 × 1033 b | 8.2 × 1033 b | 8.3 × 1033 b | 8.4 × 1033 b | 8.5 × 1033 b | 8.6 × 1033 b | 8.7 × 1033 b | 8.8 × 1033 b | 8.9 × 1033 b | 9.0 × 1033 b | 9.1 × 1033 b | 9.2 × 1033 b | 9.3 × 1033 b | 9.4 × 1033 b | 9.5 × 1033 b | 9.6 × 1033 b | 9.7 × 1033 b | 9.8 × 1033 b | 9.9 × 1033 b | 1.0 × 1034 b |
Square hectometre (International spelling as used by the International Bureau of Weights and Measures) or Square hectometer (American spelling) or hectare, symbol hm2, is the unit of area or surface area.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
square hectometer | hm2 | ≡ 1 hm × 1 hm ≡ 102 m × 102 m | = 104 m2 | Metric system SI |
square hectometers | barns | square hectometers | barns |
---|---|---|---|
1 | = 1.0E+32 | 6 | = 6.0E+32 |
2 | = 2.0E+32 | 7 | = 7.0E+32 |
3 | = 3.0E+32 | 8 | = 8.0E+32 |
4 | = 4.0E+32 | 9 | = 9.0E+32 |
5 | = 5.0E+32 | 10 | = 1.0E+33 |
A barn (symbol: b) is a unit of area equal to 10−28 m2 (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to express the cross sections of any scattering process, and is best understood as a measure of the probability of interaction between small particles.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
barn | b | ≡ 10−28 m2 | ≡ 10−28 m2 | Nuclear Physics |
barns | square hectometers | barns | square hectometers |
---|---|---|---|
1 | = 1.0E-32 | 6 | = 6.0E-32 |
2 | = 2.0E-32 | 7 | = 7.0E-32 |
3 | = 3.0E-32 | 8 | = 8.0E-32 |
4 | = 4.0E-32 | 9 | = 9.0E-32 |
5 | = 5.0E-32 | 10 | = 1.0E-31 |
square hectometers | barns |
---|---|
1 | = 1.0 × 1032 |
1.0 × 10-32 | = 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 …) |