| fermi | 1 fm | 2 fm | 3 fm | 4 fm | 5 fm | 6 fm | 7 fm | 8 fm | 9 fm | 10 fm | 11 fm | 12 fm | 13 fm | 14 fm | 15 fm | 16 fm | 17 fm | 18 fm | 19 fm | 20 fm | 21 fm | 22 fm | 23 fm | 24 fm | 25 fm | 26 fm | 27 fm | 28 fm | 29 fm | 30 fm | 31 fm | 32 fm | 33 fm | 34 fm | 35 fm | 36 fm | 37 fm | 38 fm | 39 fm | 40 fm | 41 fm | 42 fm | 43 fm | 44 fm | 45 fm | 46 fm | 47 fm | 48 fm | 49 fm | 50 fm | 51 fm | 52 fm | 53 fm | 54 fm | 55 fm | 56 fm | 57 fm | 58 fm | 59 fm | 60 fm | 61 fm | 62 fm | 63 fm | 64 fm | 65 fm | 66 fm | 67 fm | 68 fm | 69 fm | 70 fm | 71 fm | 72 fm | 73 fm | 74 fm | 75 fm | 76 fm | 77 fm | 78 fm | 79 fm | 80 fm | 81 fm | 82 fm | 83 fm | 84 fm | 85 fm | 86 fm | 87 fm | 88 fm | 89 fm | 90 fm | 91 fm | 92 fm | 93 fm | 94 fm | 95 fm | 96 fm | 97 fm | 98 fm | 99 fm | 100 fm |
| french; charriere | 3.0 × 10-12 F | 6.0 × 10-12 F | 9.0 × 10-12 F | 1.2 × 10-11 F | 1.5 × 10-11 F | 1.8 × 10-11 F | 2.1 × 10-11 F | 2.4 × 10-11 F | 2.7 × 10-11 F | 3.0 × 10-11 F | 3.3 × 10-11 F | 3.6 × 10-11 F | 3.9 × 10-11 F | 4.2 × 10-11 F | 4.5 × 10-11 F | 4.8 × 10-11 F | 5.1 × 10-11 F | 5.4 × 10-11 F | 5.7 × 10-11 F | 6.0 × 10-11 F | 6.3 × 10-11 F | 6.6 × 10-11 F | 6.9 × 10-11 F | 7.2 × 10-11 F | 7.5 × 10-11 F | 7.8 × 10-11 F | 8.1 × 10-11 F | 8.4 × 10-11 F | 8.7 × 10-11 F | 9.0 × 10-11 F | 9.3 × 10-11 F | 9.6 × 10-11 F | 9.9 × 10-11 F | 1.02 × 10-10 F | 1.05 × 10-10 F | 1.08 × 10-10 F | 1.11 × 10-10 F | 1.14 × 10-10 F | 1.17 × 10-10 F | 1.2 × 10-10 F | 1.23 × 10-10 F | 1.26 × 10-10 F | 1.29 × 10-10 F | 1.32 × 10-10 F | 1.35 × 10-10 F | 1.38 × 10-10 F | 1.41 × 10-10 F | 1.44 × 10-10 F | 1.47 × 10-10 F | 1.5 × 10-10 F | 1.53 × 10-10 F | 1.56 × 10-10 F | 1.59 × 10-10 F | 1.62 × 10-10 F | 1.65 × 10-10 F | 1.68 × 10-10 F | 1.71 × 10-10 F | 1.74 × 10-10 F | 1.77 × 10-10 F | 1.8 × 10-10 F | 1.83 × 10-10 F | 1.86 × 10-10 F | 1.89 × 10-10 F | 1.92 × 10-10 F | 1.95 × 10-10 F | 1.98 × 10-10 F | 2.01 × 10-10 F | 2.04 × 10-10 F | 2.07 × 10-10 F | 2.1 × 10-10 F | 2.13 × 10-10 F | 2.16 × 10-10 F | 2.19 × 10-10 F | 2.22 × 10-10 F | 2.25 × 10-10 F | 2.28 × 10-10 F | 2.31 × 10-10 F | 2.34 × 10-10 F | 2.37 × 10-10 F | 2.4 × 10-10 F | 2.43 × 10-10 F | 2.46 × 10-10 F | 2.49 × 10-10 F | 2.52 × 10-10 F | 2.55 × 10-10 F | 2.58 × 10-10 F | 2.61 × 10-10 F | 2.64 × 10-10 F | 2.67 × 10-10 F | 2.7 × 10-10 F | 2.73 × 10-10 F | 2.76 × 10-10 F | 2.79 × 10-10 F | 2.82 × 10-10 F | 2.85 × 10-10 F | 2.88 × 10-10 F | 2.91 × 10-10 F | 2.94 × 10-10 F | 2.97 × 10-10 F | 3.0 × 10-10 F |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
| 1 fermi = 3.0E-12 french; charriere | 4 fermi = 1.2E-11 french; charriere |
| 1.5 fermi = 4.5E-12 french; charriere | 4.5 fermi = 1.35E-11 french; charriere |
| 2 fermi = 6.0E-12 french; charriere | 5 fermi = 1.5E-11 french; charriere |
| 2.5 fermi = 7.5E-12 french; charriere | 5.5 fermi = 1.65E-11 french; charriere |
| 3 fermi = 9.0E-12 french; charriere | 6 fermi = 1.8E-11 french; charriere |
The French scale or French gauge system is commonly used to measure the size of a catheter. It is most often abbreviated as Fr, but can often be seen abbreviated as Fg, Ga, FR or F. It may also be abbreviated as CH or Ch (for Charrière, its inventor).
| 1 french; charriere = 333333333333.33 fermi | 4 french; charriere = 1333333333333.3 fermi |
| 1.5 french; charriere = 500000000000 fermi | 4.5 french; charriere = 1500000000000 fermi |
| 2 french; charriere = 666666666666.67 fermi | 5 french; charriere = 1666666666666.7 fermi |
| 2.5 french; charriere = 833333333333.33 fermi | 5.5 french; charriere = 1833333333333.3 fermi |
| 3 french; charriere = 1000000000000 fermi | 6 french; charriere = 2000000000000 fermi |
| 1 fermi = 3.0 × 10-12 french; charriere |
| 1 french; charriere = 333,333,333,333.33 fermi |