Length and Area
kmtom
Convert kilometres (km) to metres (m).
Factor1 km = 1000 m
Converter
km
Accepts numbers or expressions, e.g. 150 + 14.7
Result
m
Rendered to 6 significant figures.
Formula
Formula
m = km × 1000
Multiply any value in kilometres by 1000 to obtain the value in metres.
Worked example
Convert 1 km to m.
- 01Start with 1 km.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 m.
Result1 km = 1000 m
Conversion table
| km | m |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from km to m?
1 km equals 1000 m. To convert, multiply the value in kilometres by 1000.
How do I convert 1 km to m?
1 km = 1000 m. For any value, multiply by 1000.
How do I convert m back to km?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 m = 0.001 km.
When would I need to convert kilometre to metre?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
Yes. Both km and m are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).