Kilometres to Metres Converter
Convert kilometres to metres quickly. Free online km to m calculator with common conversions and formula.
Formula
metres = km × 1000
Common Conversions
How to Convert Kilometres to Metres
1 kilometre = 1000 metres. Multiply km by 1000 (or move the decimal three places right). So 2.5 km = 2,500 m. The 'kilo' prefix means exactly 1,000 in all SI units, so this is a definition not a calculation.
Useful when working with running and cycling pace calculations. A 5 km run = 5,000 m. Pace per 100 m × 50 = pace per 5 km. Useful for splitting longer training runs into measurable segments by metres on a track.
Common Kilometres to Metres Conversions
| Kilometres | Metres |
|---|---|
| 0.1 km | 100 m |
| 0.5 km | 500 m |
| 1 km | 1000 m |
| 2.5 km | 2500 m |
| 5 km | 5000 m |
| 10 km | 10000 m |
| 21.1 km | 21100 m |
| 42.2 km | 42200 m |
Frequently Asked Questions
How many laps of a track is 5 km?
12.5 laps of a standard 400 m track. A 5 km road race usually equals 12.5 track laps in distance. Other common: 1500 m = 3.75 laps, 10 km = 25 laps.
What's the metre defined as today?
Since 1983, the metre is defined as the distance light travels in a vacuum in 1/299,792,458 seconds. Earlier definitions used a platinum-iridium bar in Paris (1889-1960) and the Earth's circumference (1791-1889).
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