 Convert Square Metres (m²) to Square Kilometres (km²) | m² in km²
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# Let's convert Square Metres (m²) to Square Kilometres (km²)

This quick and easy calculator will convert Square Metres (m²) to Square Kilometres (km²) and show formula, brief history on the units and quick maths for the conversion.

## Quick Reference for Converting Square Metres to Square Kilometres

Formula
km² = m² / 1000000
Quick Rough Maths
To get the Square Kilometres, divide the number of Square Metres by 1000 thousand
Square Metres (m²) in 1 Square Kilometre
There are 1000000 Square Metres in 1 Square Kilometre
Square Kilometres (km²) in 1 Square Metre
There are 0 Square Kilometres in 1 Square Metre

## Unit Information

Square Metre
/skwɛːˌˈmiːtə/
Symbol:
Unit System: SI

### What is the Square Metre?

The square metre is a unit of area and is an SI derived unit with the symbol m².

It was introduced in 1954 when the International System of Units was established and was derived directly from one of the original 6 base units - the metre (m).

It can be prefixed with any of the SI symbols that multiply it up or down such as km² (square kilometre) or µm2 (square micrometre). It is the most commonly used unit of area and is recognised all over the world.

Square Kilometre
/skwɛːˌˈkɪləˌmiːtə,kɪˈlɒmɪtə/
Symbol: km²
Unit System: SI

### What is the Square Kilometre?

The square kilometre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol km².

A square kilometre is equal to the area of a square with edges 1km long. There are 1,000,000 square metres in a square kilometre.

Square kilometres are often used to describe expansive areas of land due to the large unit size.