Kilometres to Nanometres Converter
Convert kilometres (km) to nanometres (nm) instantly. Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
Result
- Nanometres
- 1,000,000,000,000 nm
How to use the kilometres to nanometres converter
- Enter the kilometres (km).
- The results update as you type, or press Calculate.
- Read the nanometres first, then the supporting figures below it.
Formula
Nanometres = kilometres × 1.000000e+12
Worked example
For example, with these inputs:
- Kilometres (km): 1
the calculator returns:
- Nanometres: 1,000,000,000,000 nm
Kilometres to Nanometres table
| Kilometres | Nanometres |
|---|---|
| 1 km | 1,000,000,000,000 nm |
| 2 km | 2.000000e+12 nm |
| 5 km | 5.000000e+12 nm |
| 10 km | 1.000000e+13 nm |
| 20 km | 2.000000e+13 nm |
| 25 km | 2.500000e+13 nm |
| 50 km | 5.000000e+13 nm |
| 100 km | 1.000000e+14 nm |
| 250 km | 2.500000e+14 nm |
| 500 km | 5.000000e+14 nm |
| 1,000 km | 1.000000e+15 nm |
About this conversion
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Frequently asked questions
How many nanometres are in one kilometre?
1 km = 1,000,000,000,000 nm.
How do I convert km to nm?
Nanometres = kilometres × 1.000000e+12.