| square meter | 1 m2 | 2 m2 | 3 m2 | 4 m2 | 5 m2 | 6 m2 | 7 m2 | 8 m2 | 9 m2 | 10 m2 | 11 m2 | 12 m2 | 13 m2 | 14 m2 | 15 m2 | 16 m2 | 17 m2 | 18 m2 | 19 m2 | 20 m2 | 21 m2 | 22 m2 | 23 m2 | 24 m2 | 25 m2 | 26 m2 | 27 m2 | 28 m2 | 29 m2 | 30 m2 | 31 m2 | 32 m2 | 33 m2 | 34 m2 | 35 m2 | 36 m2 | 37 m2 | 38 m2 | 39 m2 | 40 m2 | 41 m2 | 42 m2 | 43 m2 | 44 m2 | 45 m2 | 46 m2 | 47 m2 | 48 m2 | 49 m2 | 50 m2 | 51 m2 | 52 m2 | 53 m2 | 54 m2 | 55 m2 | 56 m2 | 57 m2 | 58 m2 | 59 m2 | 60 m2 | 61 m2 | 62 m2 | 63 m2 | 64 m2 | 65 m2 | 66 m2 | 67 m2 | 68 m2 | 69 m2 | 70 m2 | 71 m2 | 72 m2 | 73 m2 | 74 m2 | 75 m2 | 76 m2 | 77 m2 | 78 m2 | 79 m2 | 80 m2 | 81 m2 | 82 m2 | 83 m2 | 84 m2 | 85 m2 | 86 m2 | 87 m2 | 88 m2 | 89 m2 | 90 m2 | 91 m2 | 92 m2 | 93 m2 | 94 m2 | 95 m2 | 96 m2 | 97 m2 | 98 m2 | 99 m2 | 100 m2 |
| 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 square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (33A1 in Unicode). It is the area of a square whose sides measure exactly one metre. The square metre is derived from the SI base unit of the metre, which itself is defined as the length of the path travelled by light in absolute vacuum during a time interval of 1/299 792 458 of a second.
| 1 square meters = 1.0E+28 barns | 6 square meters = 6.0E+28 barns |
| 2 square meters = 2.0E+28 barns | 7 square meters = 7.0E+28 barns |
| 3 square meters = 3.0E+28 barns | 8 square meters = 8.0E+28 barns |
| 4 square meters = 4.0E+28 barns | 9 square meters = 9.0E+28 barns |
| 5 square meters = 5.0E+28 barns | 10 square meters = 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 square meters | 6 barns = 6.0E-28 square meters |
| 2 barns = 2.0E-28 square meters | 7 barns = 7.0E-28 square meters |
| 3 barns = 3.0E-28 square meters | 8 barns = 8.0E-28 square meters |
| 4 barns = 4.0E-28 square meters | 9 barns = 9.0E-28 square meters |
| 5 barns = 5.0E-28 square meters | 10 barns = 1.0E-27 square meters |
| 1 square meters = 1.0 × 1028 barns |
| 1 barns = 1.0 × 10-28 square meters |