| centiare | 1 ca | 2 ca | 3 ca | 4 ca | 5 ca | 6 ca | 7 ca | 8 ca | 9 ca | 10 ca | 11 ca | 12 ca | 13 ca | 14 ca | 15 ca | 16 ca | 17 ca | 18 ca | 19 ca | 20 ca | 21 ca | 22 ca | 23 ca | 24 ca | 25 ca | 26 ca | 27 ca | 28 ca | 29 ca | 30 ca | 31 ca | 32 ca | 33 ca | 34 ca | 35 ca | 36 ca | 37 ca | 38 ca | 39 ca | 40 ca | 41 ca | 42 ca | 43 ca | 44 ca | 45 ca | 46 ca | 47 ca | 48 ca | 49 ca | 50 ca | 51 ca | 52 ca | 53 ca | 54 ca | 55 ca | 56 ca | 57 ca | 58 ca | 59 ca | 60 ca | 61 ca | 62 ca | 63 ca | 64 ca | 65 ca | 66 ca | 67 ca | 68 ca | 69 ca | 70 ca | 71 ca | 72 ca | 73 ca | 74 ca | 75 ca | 76 ca | 77 ca | 78 ca | 79 ca | 80 ca | 81 ca | 82 ca | 83 ca | 84 ca | 85 ca | 86 ca | 87 ca | 88 ca | 89 ca | 90 ca | 91 ca | 92 ca | 93 ca | 94 ca | 95 ca | 96 ca | 97 ca | 98 ca | 99 ca | 100 ca |
| barn | 1.0 × 1028 b | 2.0 × 1028 b | 3.0 × 1028 b | 4.0 × 1028 b | 5.0 × 1028 b | 6.0 × 1028 b | 7.0 × 1028 b | 8.0 × 1028 b | 9.0 × 1028 b | 1.0 × 1029 b | 1.1 × 1029 b | 1.2 × 1029 b | 1.3 × 1029 b | 1.4 × 1029 b | 1.5 × 1029 b | 1.6 × 1029 b | 1.7 × 1029 b | 1.8 × 1029 b | 1.9 × 1029 b | 2.0 × 1029 b | 2.1 × 1029 b | 2.2 × 1029 b | 2.3 × 1029 b | 2.4 × 1029 b | 2.5 × 1029 b | 2.6 × 1029 b | 2.7 × 1029 b | 2.8 × 1029 b | 2.9 × 1029 b | 3.0 × 1029 b | 3.1 × 1029 b | 3.2 × 1029 b | 3.3 × 1029 b | 3.4 × 1029 b | 3.5 × 1029 b | 3.6 × 1029 b | 3.7 × 1029 b | 3.8 × 1029 b | 3.9 × 1029 b | 4.0 × 1029 b | 4.1 × 1029 b | 4.2 × 1029 b | 4.3 × 1029 b | 4.4 × 1029 b | 4.5 × 1029 b | 4.6 × 1029 b | 4.7 × 1029 b | 4.8 × 1029 b | 4.9 × 1029 b | 5.0 × 1029 b | 5.1 × 1029 b | 5.2 × 1029 b | 5.3 × 1029 b | 5.4 × 1029 b | 5.5 × 1029 b | 5.6 × 1029 b | 5.7 × 1029 b | 5.8 × 1029 b | 5.9 × 1029 b | 6.0 × 1029 b | 6.1 × 1029 b | 6.2 × 1029 b | 6.3 × 1029 b | 6.4 × 1029 b | 6.5 × 1029 b | 6.6 × 1029 b | 6.7 × 1029 b | 6.8 × 1029 b | 6.9 × 1029 b | 7.0 × 1029 b | 7.1 × 1029 b | 7.2 × 1029 b | 7.3 × 1029 b | 7.4 × 1029 b | 7.5 × 1029 b | 7.6 × 1029 b | 7.7 × 1029 b | 7.8 × 1029 b | 7.9 × 1029 b | 8.0 × 1029 b | 8.1 × 1029 b | 8.2 × 1029 b | 8.3 × 1029 b | 8.4 × 1029 b | 8.5 × 1029 b | 8.6 × 1029 b | 8.7 × 1029 b | 8.8 × 1029 b | 8.9 × 1029 b | 9.0 × 1029 b | 9.1 × 1029 b | 9.2 × 1029 b | 9.3 × 1029 b | 9.4 × 1029 b | 9.5 × 1029 b | 9.6 × 1029 b | 9.7 × 1029 b | 9.8 × 1029 b | 9.9 × 1029 b | 1.0 × 1030 b |
The centiare is one square metre.
| 1 centiares = 1.0E+28 barns | 6 centiares = 6.0E+28 barns |
| 2 centiares = 2.0E+28 barns | 7 centiares = 7.0E+28 barns |
| 3 centiares = 3.0E+28 barns | 8 centiares = 8.0E+28 barns |
| 4 centiares = 4.0E+28 barns | 9 centiares = 9.0E+28 barns |
| 5 centiares = 5.0E+28 barns | 10 centiares = 1.0E+29 barns |
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.
| 1 barns = 1.0E-28 centiares | 6 barns = 6.0E-28 centiares |
| 2 barns = 2.0E-28 centiares | 7 barns = 7.0E-28 centiares |
| 3 barns = 3.0E-28 centiares | 8 barns = 8.0E-28 centiares |
| 4 barns = 4.0E-28 centiares | 9 barns = 9.0E-28 centiares |
| 5 barns = 5.0E-28 centiares | 10 barns = 1.0E-27 centiares |
| 1 centiares = 1.0 × 1028 barns |
| 1 barns = 1.0 × 10-28 centiares |