Nanometer to Kilometer Converter
Length · unit-converter
Convert Nanometer to Kilometer with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use SI-based definitions (international yard, nautical mile, etc.).
Calculator
From: Nanometer (nm)
To: Kilometer (km)
About Nanometer
The nanometer is one billionth of a meter. It describes wavelengths of light, semiconductor features, and molecular scales.
About Kilometer
The kilometer is an SI unit equal to 1,000 meters. It is the standard unit for longer distances in most countries that use the metric system.
How to convert nanometers to kilometers
1 nanometer is equal to 1.00000000e-12 kilometer:
1 nm = (1e-9 m ÷ 1000 m) km = 1.00000000e-12 km
Each nanometer is defined as 1e-9 m and each kilometer as 1000 m, so one nm equals 1e-9 ÷ 1000 km = 1.00000000e-12 km.
Let d(nm) be the numeric value of the same length measured in Nanometer (nm), and d(km) the value in Kilometer (km). Then:
d(km) = d(nm) × (1e-9 / 1000)
Equivalently, divide by how many nm fit into one km (meters per km divided by meters per nm):
d(km) = d(nm) ÷ 1.00000000e+12
Or: kilometer = nanometer ÷ 1.00000000e+12
Examples
Example #1: Convert 20 nm to kilometer
20 nm = 20 nm × (1e-9/1000) km = 0 km
20 nm = 20 nm ÷ 1.00000000e+12 = 0 km
Example #2: Convert 50 nm to kilometer
50 nm = 50 nm × (1e-9/1000) km = 0.0000000001 km
50 nm = 50 nm ÷ 1.00000000e+12 = 0.0000000001 km
Summary
To convert Nanometer to Kilometer, multiply the value in nm by the ratio of meters per nm divided by meters per km. Equivalently: value_km = value_nm × (1e-9 / 1000). Numerically, 1 nm equals 1e-12 km.
Relationship context
Both units are metric (SI) and tied to the meter. Converting between them uses powers of ten (or simple rational factors), so the relationship is exact in decimal arithmetic. The factor from Nanometer to Kilometer is 1.000000e-12 (1 nm = 1e-12 km).
Conversion tables
| Nanometer (nm) | Kilometer (km) |
|---|---|
| 0.1 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| Nanometer (nm) | Kilometer (km) |
|---|---|
| 10 | 0 |
| 20 | 0 |
| 30 | 0 |
| 40 | 0 |
| 50 | 0.0000000001 |
| 60 | 0.0000000001 |
| 70 | 0.0000000001 |
| 80 | 0.0000000001 |
| 90 | 0.0000000001 |
| 100 | 0.0000000001 |