Convert kilometer to nanometer
1 km = 1,000,000,000,000 nm
1 km = 1,000,000,000,000 nm
1 km in every length unit
| femtometer | 1.00e+18 fm |
| picometer | 1.00e+15 pm |
| nanometer | 1,000,000,000,000 nm |
| micrometer | 1,000,000,000 μm |
| millimeter | 1,000,000 mm |
| centimeter | 100,000 cm |
| decimeter | 10,000 dm |
| meter | 1,000 m |
| kilometer | 1 km |
| inch | 39,400 in |
| foot | 3,280 ft |
| yard | 1,090 yd |
| mile | 0.621 mi |
| nautical mile | 0.54 nmi |
| astronomical unit | 6.68e-09 AU |
| light-year | 1.06e-13 ly |
| parsec | 3.24e-14 pc |
How the conversion works
Multiply by 1,000,000,000,000 to go from kilometer to nanometer, or divide by it to go back. Every conversion on this site routes through the SI value (m) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? nanometer to kilometer — 1 nm = 1.000000000e-12 km.
kilometer to nanometer — common values
| 1 km | 1,000,000,000,000 nm |
| 2 km | 2,000,000,000,000 nm |
| 3 km | 3,000,000,000,000 nm |
| 5 km | 5,000,000,000,000 nm |
| 10 km | 10,000,000,000,000 nm |
| 15 km | 15,000,000,000,000 nm |
| 20 km | 20,000,000,000,000 nm |
| 25 km | 25,000,000,000,000 nm |
| 50 km | 50,000,000,000,000 nm |
| 75 km | 75,000,000,000,000 nm |
| 100 km | 100,000,000,000,000 nm |
| 250 km | 250,000,000,000,000 nm |
| 500 km | 500,000,000,000,000 nm |
| 1000 km | 1.0000000e+15 nm |
Solvers that use length