| 0nm | 0km |
| 1nm | 1 × 10⁻¹²km |
| 2nm | 2 × 10⁻¹²km |
| 3nm | 3 × 10⁻¹²km |
| 4nm | 4 × 10⁻¹²km |
| 5nm | 5 × 10⁻¹²km |
| 6nm | 6 × 10⁻¹²km |
| 7nm | 7 × 10⁻¹²km |
| 8nm | 8 × 10⁻¹²km |
| 9nm | 9 × 10⁻¹²km |
| 10nm | 1 × 10⁻¹¹km |
| 11nm | 1.1 × 10⁻¹¹km |
| 12nm | 1.2 × 10⁻¹¹km |
| 13nm | 1.3 × 10⁻¹¹km |
| 14nm | 1.4 × 10⁻¹¹km |
| 15nm | 1.5 × 10⁻¹¹km |
| 16nm | 1.6 × 10⁻¹¹km |
| 17nm | 1.7 × 10⁻¹¹km |
| 18nm | 1.8 × 10⁻¹¹km |
| 19nm | 1.9 × 10⁻¹¹km |
| 20nm | 2 × 10⁻¹¹km |
| 21nm | 2.1 × 10⁻¹¹km |
| 22nm | 2.2 × 10⁻¹¹km |
| 23nm | 2.3 × 10⁻¹¹km |
| 24nm | 2.4 × 10⁻¹¹km |
| 25nm | 2.5 × 10⁻¹¹km |
| 26nm | 2.6 × 10⁻¹¹km |
| 27nm | 2.7 × 10⁻¹¹km |
| 28nm | 2.8 × 10⁻¹¹km |
| 29nm | 2.9 × 10⁻¹¹km |
| 30nm | 3 × 10⁻¹¹km |
| 31nm | 3.1 × 10⁻¹¹km |
| 32nm | 3.2 × 10⁻¹¹km |
| 33nm | 3.3 × 10⁻¹¹km |
| 34nm | 3.4 × 10⁻¹¹km |
| 35nm | 3.5 × 10⁻¹¹km |
| 36nm | 3.6 × 10⁻¹¹km |
| 37nm | 3.7 × 10⁻¹¹km |
| 38nm | 3.8 × 10⁻¹¹km |
| 39nm | 3.9 × 10⁻¹¹km |
| 40nm | 4 × 10⁻¹¹km |
| 41nm | 4.1 × 10⁻¹¹km |
| 42nm | 4.2 × 10⁻¹¹km |
| 43nm | 4.3 × 10⁻¹¹km |
| 44nm | 4.4 × 10⁻¹¹km |
| 45nm | 4.5 × 10⁻¹¹km |
| 46nm | 4.6 × 10⁻¹¹km |
| 47nm | 4.7 × 10⁻¹¹km |
| 48nm | 4.8 × 10⁻¹¹km |
| 49nm | 4.9 × 10⁻¹¹km |
| 50nm | 5 × 10⁻¹¹km |
| 51nm | 5.1 × 10⁻¹¹km |
| 52nm | 5.2 × 10⁻¹¹km |
| 53nm | 5.3 × 10⁻¹¹km |
| 54nm | 5.4 × 10⁻¹¹km |
| 55nm | 5.5 × 10⁻¹¹km |
| 56nm | 5.6 × 10⁻¹¹km |
| 57nm | 5.7 × 10⁻¹¹km |
| 58nm | 5.8 × 10⁻¹¹km |
| 59nm | 5.9 × 10⁻¹¹km |
| 60nm | 6 × 10⁻¹¹km |
| 61nm | 6.1 × 10⁻¹¹km |
| 62nm | 6.2 × 10⁻¹¹km |
| 63nm | 6.3 × 10⁻¹¹km |
| 64nm | 6.4 × 10⁻¹¹km |
| 65nm | 6.5 × 10⁻¹¹km |
| 66nm | 6.6 × 10⁻¹¹km |
| 67nm | 6.7 × 10⁻¹¹km |
| 68nm | 6.8 × 10⁻¹¹km |
| 69nm | 6.9 × 10⁻¹¹km |
| 70nm | 7 × 10⁻¹¹km |
| 71nm | 7.1 × 10⁻¹¹km |
| 72nm | 7.2 × 10⁻¹¹km |
| 73nm | 7.3 × 10⁻¹¹km |
| 74nm | 7.4 × 10⁻¹¹km |
| 75nm | 7.5 × 10⁻¹¹km |
| 76nm | 7.6 × 10⁻¹¹km |
| 77nm | 7.7 × 10⁻¹¹km |
| 78nm | 7.8 × 10⁻¹¹km |
| 79nm | 7.9 × 10⁻¹¹km |
| 80nm | 8 × 10⁻¹¹km |
| 81nm | 8.1 × 10⁻¹¹km |
| 82nm | 8.2 × 10⁻¹¹km |
| 83nm | 8.3 × 10⁻¹¹km |
| 84nm | 8.4 × 10⁻¹¹km |
| 85nm | 8.5 × 10⁻¹¹km |
| 86nm | 8.6 × 10⁻¹¹km |
| 87nm | 8.7 × 10⁻¹¹km |
| 88nm | 8.8 × 10⁻¹¹km |
| 89nm | 8.9 × 10⁻¹¹km |
| 90nm | 9 × 10⁻¹¹km |
| 91nm | 9.1 × 10⁻¹¹km |
| 92nm | 9.2 × 10⁻¹¹km |
| 93nm | 9.3 × 10⁻¹¹km |
| 94nm | 9.4 × 10⁻¹¹km |
| 95nm | 9.5 × 10⁻¹¹km |
| 96nm | 9.6 × 10⁻¹¹km |
| 97nm | 9.7 × 10⁻¹¹km |
| 98nm | 9.8 × 10⁻¹¹km |
| 99nm | 9.9 × 10⁻¹¹km |
The nanometre is a unit of length and is a multiple of the SI unit metre. It uses the symbol nm.
1 nm is equal to one one-billionth of a metre. (Nano is the prefix for one billionth). It is used to express dimensions on an atomic scale for example a helium atom has a radius of approximately 0.03nm.
The nanometre was previously known as the millimicrometre (or the millimicron).
The kilometre is a unit of length and is a multiple of the metre; an SI derived unit. It has the symbol km.
A kilometre is equal to 1000m, 1094 yards and 0.621 miles.
Kilometres is used to measure road distances in the US, though the UK is still using the imperial "sister" miles.