 Convert Metres (m) to Nanometres (nm) | m in nm
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# Let's convert Metres (m) to Nanometres (nm)

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

## Quick Reference for Converting Metres to Nanometres

Formula
nm = m x 1000000000
Quick Rough Maths
To get the Nanometres, multiply the number of Metres by 1000 million
Metres (m) in 1 Nanometre
There are 0 Metres in 1 Nanometre
Nanometres (nm) in 1 Metre
There are 1000000000 Nanometres in 1 Metre

## Unit Information

Metre
/ˈmiːtə/
Symbol: m
Unit System: SI

### What is the Metre?

The metre (or meter; US spelling) is the SI base unit of length and uses the symbol m.

Originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole but was redefined in 1799 in terms of a prototyped metre bar (this bar was changed again in 1889).

In 1983 the current definition was adopted and it is now the most common unit in any property in the world and is used in thousands of formulae to describe countless characteristics.

Let's hear it for the metre!

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).