| yoctometer | 1 ym | 2 ym | 3 ym | 4 ym | 5 ym | 6 ym | 7 ym | 8 ym | 9 ym | 10 ym | 11 ym | 12 ym | 13 ym | 14 ym | 15 ym | 16 ym | 17 ym | 18 ym | 19 ym | 20 ym | 21 ym | 22 ym | 23 ym | 24 ym | 25 ym | 26 ym | 27 ym | 28 ym | 29 ym | 30 ym | 31 ym | 32 ym | 33 ym | 34 ym | 35 ym | 36 ym | 37 ym | 38 ym | 39 ym | 40 ym | 41 ym | 42 ym | 43 ym | 44 ym | 45 ym | 46 ym | 47 ym | 48 ym | 49 ym | 50 ym | 51 ym | 52 ym | 53 ym | 54 ym | 55 ym | 56 ym | 57 ym | 58 ym | 59 ym | 60 ym | 61 ym | 62 ym | 63 ym | 64 ym | 65 ym | 66 ym | 67 ym | 68 ym | 69 ym | 70 ym | 71 ym | 72 ym | 73 ym | 74 ym | 75 ym | 76 ym | 77 ym | 78 ym | 79 ym | 80 ym | 81 ym | 82 ym | 83 ym | 84 ym | 85 ym | 86 ym | 87 ym | 88 ym | 89 ym | 90 ym | 91 ym | 92 ym | 93 ym | 94 ym | 95 ym | 96 ym | 97 ym | 98 ym | 99 ym | 100 ym |
| fermtometer | 1.0 × 10-9 fm | 2.0 × 10-9 fm | 3.0 × 10-9 fm | 4.0 × 10-9 fm | 5.0 × 10-9 fm | 6.0 × 10-9 fm | 7.0 × 10-9 fm | 8.0 × 10-9 fm | 9.0 × 10-9 fm | 1.0 × 10-8 fm | 1.1 × 10-8 fm | 1.2 × 10-8 fm | 1.3 × 10-8 fm | 1.4 × 10-8 fm | 1.5 × 10-8 fm | 1.6 × 10-8 fm | 1.7 × 10-8 fm | 1.8 × 10-8 fm | 1.9 × 10-8 fm | 2.0 × 10-8 fm | 2.1 × 10-8 fm | 2.2 × 10-8 fm | 2.3 × 10-8 fm | 2.4 × 10-8 fm | 2.5 × 10-8 fm | 2.6 × 10-8 fm | 2.7 × 10-8 fm | 2.8 × 10-8 fm | 2.9 × 10-8 fm | 3.0 × 10-8 fm | 3.1 × 10-8 fm | 3.2 × 10-8 fm | 3.3 × 10-8 fm | 3.4 × 10-8 fm | 3.5 × 10-8 fm | 3.6 × 10-8 fm | 3.7 × 10-8 fm | 3.8 × 10-8 fm | 3.9 × 10-8 fm | 4.0 × 10-8 fm | 4.1 × 10-8 fm | 4.2 × 10-8 fm | 4.3 × 10-8 fm | 4.4 × 10-8 fm | 4.5 × 10-8 fm | 4.6 × 10-8 fm | 4.7 × 10-8 fm | 4.8 × 10-8 fm | 4.9 × 10-8 fm | 5.0 × 10-8 fm | 5.1 × 10-8 fm | 5.2 × 10-8 fm | 5.3 × 10-8 fm | 5.4 × 10-8 fm | 5.5 × 10-8 fm | 5.6 × 10-8 fm | 5.7 × 10-8 fm | 5.8 × 10-8 fm | 5.9 × 10-8 fm | 6.0 × 10-8 fm | 6.1 × 10-8 fm | 6.2 × 10-8 fm | 6.3 × 10-8 fm | 6.4 × 10-8 fm | 6.5 × 10-8 fm | 6.6 × 10-8 fm | 6.7 × 10-8 fm | 6.8 × 10-8 fm | 6.9 × 10-8 fm | 7.0 × 10-8 fm | 7.1 × 10-8 fm | 7.2 × 10-8 fm | 7.3 × 10-8 fm | 7.4 × 10-8 fm | 7.5 × 10-8 fm | 7.6 × 10-8 fm | 7.7 × 10-8 fm | 7.8 × 10-8 fm | 7.9 × 10-8 fm | 8.0 × 10-8 fm | 8.1 × 10-8 fm | 8.2 × 10-8 fm | 8.3 × 10-8 fm | 8.4 × 10-8 fm | 8.5 × 10-8 fm | 8.6 × 10-8 fm | 8.7 × 10-8 fm | 8.8 × 10-8 fm | 8.9 × 10-8 fm | 9.0 × 10-8 fm | 9.1 × 10-8 fm | 9.2 × 10-8 fm | 9.3 × 10-8 fm | 9.4 × 10-8 fm | 9.5 × 10-8 fm | 9.6 × 10-8 fm | 9.7 × 10-8 fm | 9.8 × 10-8 fm | 9.9 × 10-8 fm | 1.0 × 10-7 fm |
The yoctometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: ym) or yoctometer (American spelling) is an SI measure of length that is equal to 10−24 (yocto) of a metre. It is the smallest named subdivision of the metre in the SI base unit of length.
| 1 yoctometers ≡ 1.0E-9 fermtometers | 4 yoctometers ≡ 4.0E-9 fermtometers |
| 1.5 yoctometers ≡ 1.5E-9 fermtometers | 4.5 yoctometers ≡ 4.5E-9 fermtometers |
| 2 yoctometers ≡ 2.0E-9 fermtometers | 5 yoctometers ≡ 5.0E-9 fermtometers |
| 2.5 yoctometers ≡ 2.5E-9 fermtometers | 5.5 yoctometers ≡ 5.5E-9 fermtometers |
| 3 yoctometers ≡ 3.0E-9 fermtometers | 6 yoctometers ≡ 6.0E-9 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 ≡ 1000000000 yoctometers | 4 fermtometers ≡ 4000000000 yoctometers |
| 1.5 fermtometers ≡ 1500000000 yoctometers | 4.5 fermtometers ≡ 4500000000 yoctometers |
| 2 fermtometers ≡ 2000000000 yoctometers | 5 fermtometers ≡ 5000000000 yoctometers |
| 2.5 fermtometers ≡ 2500000000 yoctometers | 5.5 fermtometers ≡ 5500000000 yoctometers |
| 3 fermtometers ≡ 3000000000 yoctometers | 6 fermtometers ≡ 6000000000 yoctometers |
| 1 yoctometers ≡ 1.0 × 10-9 fermtometers |
| 1 fermtometers ≡ 1 000 000 000 yoctometers |