# Convert Kilometers to Nanometers

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

Results in Nanometers: 1 km = 1,000,000,000,000 nm

## How to Convert Kilometers to Nanometers To convert a kilometer measurement to a nanometer measurement, multiply the length by the conversion ratio. One kilometer is equal to 1,000,000,000,000 nanometers, so use this simple formula to convert:

nanometers = kilometers × 1,000,000,000,000

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

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

## Kilometers

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

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 103. Kilometers can be abbreviated as km, for example 1 kilometer can be written as 1 km.

## Nanometers

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 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.

We recommend using a ruler or tape measure for measuring length, which can be found at a local retailer or home center. Rulers are available in imperial, metric, or combination with both values, so make sure you get the correct type for your needs.

If you need a ruler you can also download and print our free printable rulers, which include both imperial and metric measurements.

## Kilometer to Nanometer Conversion Table

Kilometer measurements converted to nanometers
Kilometers Nanometers
0.000000000001 km 1 nm
0.000000000002 km 2 nm
0.000000000003 km 3 nm
0.000000000004 km 4 nm
0.000000000005 km 5 nm
0.000000000006 km 6 nm
0.000000000007 km 7 nm
0.000000000008 km 8 nm
0.000000000009 km 9 nm
0.0000000000001 km 0.1 nm
0.000000000001 km 1 nm
0.00000000001 km 10 nm
0.0000000001 km 100 nm
0.000000001 km 1,000 nm
0.00000001 km 10,000 nm
0.0000001 km 100,000 nm
0.000001 km 1,000,000 nm
0.00001 km 10,000,000 nm
0.0001 km 100,000,000 nm
0.001 km 1,000,000,000 nm
0.01 km 10,000,000,000 nm
0.1 km 100,000,000,000 nm
1 km 1,000,000,000,000 nm

## 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