| kilometer | 1 km | 2 km | 3 km | 4 km | 5 km | 6 km | 7 km | 8 km | 9 km | 10 km | 11 km | 12 km | 13 km | 14 km | 15 km | 16 km | 17 km | 18 km | 19 km | 20 km | 21 km | 22 km | 23 km | 24 km | 25 km | 26 km | 27 km | 28 km | 29 km | 30 km | 31 km | 32 km | 33 km | 34 km | 35 km | 36 km | 37 km | 38 km | 39 km | 40 km | 41 km | 42 km | 43 km | 44 km | 45 km | 46 km | 47 km | 48 km | 49 km | 50 km | 51 km | 52 km | 53 km | 54 km | 55 km | 56 km | 57 km | 58 km | 59 km | 60 km | 61 km | 62 km | 63 km | 64 km | 65 km | 66 km | 67 km | 68 km | 69 km | 70 km | 71 km | 72 km | 73 km | 74 km | 75 km | 76 km | 77 km | 78 km | 79 km | 80 km | 81 km | 82 km | 83 km | 84 km | 85 km | 86 km | 87 km | 88 km | 89 km | 90 km | 91 km | 92 km | 93 km | 94 km | 95 km | 96 km | 97 km | 98 km | 99 km | 100 km |
| fermtometer | 1.0 × 1018 fm | 2.0 × 1018 fm | 3.0 × 1018 fm | 4.0 × 1018 fm | 5.0 × 1018 fm | 6.0 × 1018 fm | 7.0 × 1018 fm | 8.0 × 1018 fm | 9.0 × 1018 fm | 1.0 × 1019 fm | 1.1 × 1019 fm | 1.2 × 1019 fm | 1.3 × 1019 fm | 1.4 × 1019 fm | 1.5 × 1019 fm | 1.6 × 1019 fm | 1.7 × 1019 fm | 1.8 × 1019 fm | 1.9 × 1019 fm | 2.0 × 1019 fm | 2.1 × 1019 fm | 2.2 × 1019 fm | 2.3 × 1019 fm | 2.4 × 1019 fm | 2.5 × 1019 fm | 2.6 × 1019 fm | 2.7 × 1019 fm | 2.8 × 1019 fm | 2.9 × 1019 fm | 3.0 × 1019 fm | 3.1 × 1019 fm | 3.2 × 1019 fm | 3.3 × 1019 fm | 3.4 × 1019 fm | 3.5 × 1019 fm | 3.6 × 1019 fm | 3.7 × 1019 fm | 3.8 × 1019 fm | 3.9 × 1019 fm | 4.0 × 1019 fm | 4.1 × 1019 fm | 4.2 × 1019 fm | 4.3 × 1019 fm | 4.4 × 1019 fm | 4.5 × 1019 fm | 4.6 × 1019 fm | 4.7 × 1019 fm | 4.8 × 1019 fm | 4.9 × 1019 fm | 5.0 × 1019 fm | 5.1 × 1019 fm | 5.2 × 1019 fm | 5.3 × 1019 fm | 5.4 × 1019 fm | 5.5 × 1019 fm | 5.6 × 1019 fm | 5.7 × 1019 fm | 5.8 × 1019 fm | 5.9 × 1019 fm | 6.0 × 1019 fm | 6.1 × 1019 fm | 6.2 × 1019 fm | 6.3 × 1019 fm | 6.4 × 1019 fm | 6.5 × 1019 fm | 6.6 × 1019 fm | 6.7 × 1019 fm | 6.8 × 1019 fm | 6.9 × 1019 fm | 7.0 × 1019 fm | 7.1 × 1019 fm | 7.2 × 1019 fm | 7.3 × 1019 fm | 7.4 × 1019 fm | 7.5 × 1019 fm | 7.6 × 1019 fm | 7.7 × 1019 fm | 7.8 × 1019 fm | 7.9 × 1019 fm | 8.0 × 1019 fm | 8.1 × 1019 fm | 8.2 × 1019 fm | 8.3 × 1019 fm | 8.4 × 1019 fm | 8.5 × 1019 fm | 8.6 × 1019 fm | 8.7 × 1019 fm | 8.8 × 1019 fm | 8.9 × 1019 fm | 9.0 × 1019 fm | 9.1 × 1019 fm | 9.2 × 1019 fm | 9.3 × 1019 fm | 9.4 × 1019 fm | 9.5 × 1019 fm | 9.6 × 1019 fm | 9.7 × 1019 fm | 9.8 × 1019 fm | 9.9 × 1019 fm | 1.0 × 1020 fm |
Kilometer or kilometre is one of the most common metric units of length or distance. It is equal to 1 000 meters. It is about 0.62137119 mile, 1093.6133 yards, or 3280.8399 feet. Plural name is kilometers.
| 1 kilometers ≡ 1.0E+18 fermtometers | 4 kilometers ≡ 4.0E+18 fermtometers |
| 1.5 kilometers ≡ 1.5E+18 fermtometers | 4.5 kilometers ≡ 4.5E+18 fermtometers |
| 2 kilometers ≡ 2.0E+18 fermtometers | 5 kilometers ≡ 5.0E+18 fermtometers |
| 2.5 kilometers ≡ 2.5E+18 fermtometers | 5.5 kilometers ≡ 5.5E+18 fermtometers |
| 3 kilometers ≡ 3.0E+18 fermtometers | 6 kilometers ≡ 6.0E+18 fermtometers |
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 fermtometers ≡ 1.0E-18 kilometers | 4 fermtometers ≡ 4.0E-18 kilometers |
| 1.5 fermtometers ≡ 1.5E-18 kilometers | 4.5 fermtometers ≡ 4.5E-18 kilometers |
| 2 fermtometers ≡ 2.0E-18 kilometers | 5 fermtometers ≡ 5.0E-18 kilometers |
| 2.5 fermtometers ≡ 2.5E-18 kilometers | 5.5 fermtometers ≡ 5.5E-18 kilometers |
| 3 fermtometers ≡ 3.0E-18 kilometers | 6 fermtometers ≡ 6.0E-18 kilometers |
| 1 kilometers ≡ 1.0 × 1018 fermtometers |
| 1 fermtometers ≡ 1.0 × 10-18 kilometers |