Convert Kilometres (km) to Micrometres (μm) | km in μm

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# Let's convert Kilometres (km) to Micrometres (μm)

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

## Quick Reference for Converting Kilometres to Micrometres

Formula
μm = km x 1000000000
Quick Rough Maths
To get the Micrometres, multiply the number of Kilometres by 1000 million
Kilometres (km) in 1 Micrometre
There are 0 Kilometres in 1 Micrometre
Micrometres (μm) in 1 Kilometre
There are 1000000000 Micrometres 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.

Micrometre
/ˈmʌɪkrə(ʊ)ˌmiːtə/
Symbol: μm
Unit System: SI

### What is the Micrometre?

The micrometre (American spelling micrometer) is a unit of length and is a multiple of the SI unit metre. It uses the symbol μm.

It represents one millionth of a metre and is also known by its previously depreciated name micron.

In the US, the term 'micron' helped distinguish the unit name from the device 'micrometer' but the International System of Units (SI) discontinued this term in favour of micrometre as the prefix system required the use of the Greek symbol 'μ' which invoked the factor x10−6.