Convert Kilometres (km) to Nanometres (nm) | km in nm

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# Let's convert Kilometres (km) to Nanometres (nm)

This quick and easy calculator will convert Kilometres (km) to Nanometres (nm) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Kilometres to Nanometres

Formula
nm = km x 1000000000000
Quick Rough Maths
To get the Nanometres, multiply the number of Kilometres by 1000 billion
Kilometres (km) in 1 Nanometre
There are 0 Kilometres in 1 Nanometre
Nanometres (nm) in 1 Kilometre
There are 1000000000000 Nanometres in 1 Kilometre

## Unit Information

Kilometre
/ˈkɪləˌmiːtə,kɪˈlɒmɪtə/
Symbol: km
Unit System: SI

### What is the Kilometre?

The kilometre is a unit of length and is a multiple of the metre; an SI derived unit. It has the symbol km.

A kilometre is equal to 1000m, 1094 yards and 0.621 miles.

Kilometres is used to measure road distances in the US, though the UK is still using the imperial "sister" miles.

Nanometre
/ˈnanə(ʊ)ˌmiːtə/
Symbol: nm
Unit System: SI

### What is the Nanometre?

The nanometre is a unit of length and is a multiple of the SI unit metre. It uses the symbol nm.

1 nm is equal to one one-billionth of a metre. (Nano is the prefix for one billionth). It is used to express dimensions on an atomic scale for example a helium atom has a radius of approximately 0.03nm.

The nanometre was previously known as the millimicrometre (or the millimicron).