Square metres to square kilometres
Multiply square metres by 0.000001 to get square kilometres.
100,000 m² = 0.1 km²
How to convert square metres to square kilometres
The square kilometre is one million square metres (10⁶ m²). The square metre is the SI unit of area, a square one metre on each side.
Worked example — 100,000 m²: 100,000 × 0.000001 = 0.1 km².
Square metres to square kilometres table
| Square metres | Square kilometres |
|---|---|
| 1,000 m² | 0.001 km² |
| 5,000 m² | 0.005 km² |
| 10,000 m² | 0.01 km² |
| 50,000 m² | 0.05 km² |
| 100,000 m² | 0.1 km² |
| 500,000 m² | 0.5 km² |
| 1,000,000 m² | 1 km² |
| 2,000,000 m² | 2 km² |
| 5,000,000 m² | 5 km² |
Reverse and related
About square metres and square kilometres
Square metre (m²)
1 m² = 0.000001 km²Definition. The SI unit of area, a square one metre on each side
History and origin
The square metre is the SI unit of area, simply a square one metre on each side. It came with the metre in the metric system of the 1790s.
Current use
Square metres measure floor area and the size of rooms and apartments across the metric world.
Source: BIPM SI Brochure (2019)
Square kilometre (km²)
1 km² = 1,000,000 m²Definition. One million square metres (10⁶ m²)
History and origin
The square kilometre is a square one kilometre on each side, one million square metres. It became the metric unit for large land areas.
Current use
Square kilometres measure land area and the size of cities and regions.
Source: BIPM SI Brochure (2019)
Where people use this
Square metres: floor area, room and apartment sizes. Square kilometres: land area, city and region sizes. 1 000 000 m² is exactly 1 km².
Every value is carried to full double precision; the display is rounded.
Both units are defined in BIPM SI Brochure (2019).
Questions people ask
How many m² in a km²?
One square kilometre is exactly 1,000,000 m².
How many km² is 500,000 m²?
500,000 m² is 0.5 km².
How many km² is 10,000 m²?
10,000 m² (one hectare) is 0.01 km².