Convert Kilometer to Nanometer
Use this free converter to change kilometers (km) into nanometers (nm). Kilometer and nanometer both measure length. As a quick reference, 1 km equals 1000000000000 nm, and 1 nm equals 1.0000e-12 km.
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Nanometer (nm)
1000000000000
1 km = 1000000000000 nm
Length conversion table
| Kilometer | Nanometer |
|---|---|
| 0.01 | 10000000000 |
| 0.1 | 100000000000 |
| 0.5 | 500000000000 |
| 1 | 1000000000000 |
| 2 | 2.0000e+12 |
| 3 | 3.0000e+12 |
| 5 | 5.0000e+12 |
| 10 | 1.0000e+13 |
| 20 | 2.0000e+13 |
| 25 | 2.5000e+13 |
| 50 | 5.0000e+13 |
| 100 | 1.0000e+14 |
| 1,000 | 1.0000e+15 |
How to convert Kilometer to Nanometer
Multiply the kilometer value by 1000000000000 to get nanometers.
- Enter the number of kilometers you want to convert.
- The converter instantly shows the equivalent value in nanometers.
- Worked example: 15 km × 1000000000000 = 1.5000e+13 nm.
- Use the swap button to reverse the conversion (nanometer to kilometer).
About these units
Kilometer (km)
- Definition
- A kilometer (km) is 1,000 meters and is the metric unit used for measuring longer distances such as roads and travel.
- History
- It entered use with the metric system in the 1790s, combining the SI prefix "kilo-" (thousand) with the meter.
- Current use
- Most of the world expresses road distances and speed limits in kilometers; the main exceptions are the United States and the United Kingdom, which still use miles.
Nanometer (nm)
- Definition
- A nanometer (nm) is one billionth of a meter, the scale of atoms, molecules, and wavelengths of light.
- History
- It combines the SI prefix "nano-" (one billionth) with the meter and became common with the rise of nanotechnology.
- Current use
- Nanometers measure the wavelengths of visible light (about 380–750 nm) and the feature sizes of modern microchips.
Frequently asked questions
How many nanometers are in a kilometer?
There are 1000000000000 nm in 1 km. To convert, multiply the number of kilometers by 1000000000000.
How do I convert kilometers to nanometers?
Multiply the kilometer value by 1000000000000 to get nanometers. For example, 10 km = 1.0000e+13 nm.
Is this kilometer-to-nanometer converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kilometer to other length units
| Unit | 1 Kilometer equals |
|---|---|
| Meter (m) | 1000 m |
| Centimeter (cm) | 100000 cm |
| Millimeter (mm) | 1000000 mm |
| Micrometer (µm) | 1000000000 µm |
| Nanometer (nm) | 1000000000000 nm |
| Mile (mi) | 0.62137119 mi |
| Yard (yd) | 1093.6133 yd |
| Foot (ft) | 3280.8399 ft |
| Inch (in) | 39370.079 in |
| Nautical Mile (nmi) | 0.5399568 nmi |
| Light Year (ly) | 1.0570e-13 ly |