# Nanometers to Kilometers Converter

Enter the length in nanometers below to get the value converted to kilometers.

Results in Kilometers: 1 nm = 1.0E-12 km
Hint: use a scientific notation calculator to convert E notation to decimal

Do you want to convert kilometers to nanometers?

## How to Convert Nanometers to Kilometers

To convert a measurement in nanometers to a measurement in kilometers, divide the length by the following conversion ratio: 1,000,000,000,000 nanometers/kilometer.

Since one kilometer is equal to 1,000,000,000,000 nanometers, you can use this simple formula to convert:

kilometers = nanometers ÷ 1,000,000,000,000

The length in kilometers is equal to the length in nanometers divided by 1,000,000,000,000.

For example, here's how to convert 5,000,000,000,000 nanometers to kilometers using the formula above.
kilometers = (5,000,000,000,000 nm ÷ 1,000,000,000,000) = 5 km

## What is a Nanometer?

One nanometer is equal to one-billionth (1/1,000,000,000) of a meter, which is defined as the distance light travels in a vacuum in a 1/299,792,458 second time interval.

The nanometer, or nanometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "nano" is the prefix for billionths, or 10-9. Nanometers can be abbreviated as nm; for example, 1 nanometer can be written as 1 nm.

The nanometer is an extremely small unit of length measurement, often used to measure things that are very small, such as the transistors and electrical pathways in computer processors and nanotechnology.

## What is a Kilometer?

One kilometer is equal to 1,000 meters, which are defined as the distance light travels in a vacuum in 1/299,792,458 of a second. One kilometer is equal to 0.621371 miles.

The kilometer, or kilometre, is a multiple of the meter, which is the SI base unit for length. In the metric system, "kilo" is the prefix for thousands, or 103. Kilometers can be abbreviated as km; for example, 1 kilometer can be written as 1 km.

## Nanometer to Kilometer Conversion Table

Table showing various nanometer measurements converted to kilometers.
Nanometers Kilometers
1 nm 0.000000000001 km
2 nm 0.000000000002 km
3 nm 0.000000000003 km
4 nm 0.000000000004 km
5 nm 0.000000000005 km
6 nm 0.000000000006 km
7 nm 0.000000000007 km
8 nm 0.000000000008 km
9 nm 0.000000000009 km
10 nm 0.00000000001 km
100 nm 0.0000000001 km
1,000 nm 0.000000001 km
10,000 nm 0.00000001 km
100,000 nm 0.0000001 km
1,000,000 nm 0.000001 km
10,000,000 nm 0.00001 km
100,000,000 nm 0.0001 km
1,000,000,000 nm 0.001 km
10,000,000,000 nm 0.01 km
100,000,000,000 nm 0.1 km
1,000,000,000,000 nm 1 km

## References

1. Ambler Thompson and Barry N. Taylor, Guide for the Use of the International System of Units (SI), National Institute of Standards and Technology, https://physics.nist.gov/cuu/pdf/sp811.pdf