Convert km to meters
Convert km to meters instantly. 1 km = 1,000 m. Formula, worked examples and a quick reference table.
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One kilometer equals 1,000 meters. To convert any number of kilometers to meters, multiply by 1,000.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Length conversions come up wherever a measurement crosses a border: a height given in feet and inches on a form that wants centimetres, a running distance recorded in kilometres and compared against miles, a component specified in millimetres and ordered from a supplier working in inches. The conversions themselves are exact — the inch, foot, yard and mile have all been defined in metric terms since 1959 — so any discrepancy comes from rounding, not from the units disagreeing.
km to meters formula
To go the other way, use kilometer = meter ÷ 1,000.
About these units
The kilometre is a thousand metres, and the standard road-distance unit in every country except the United States, the United Kingdom and a handful of others.
The metre is defined by the speed of light: the distance light travels in 1/299,792,458 of a second. Every other length unit is now defined against it.
Kilometer is also written kilometre, kilometres, kilometers and kms. Meter is also written metre, metres and meters.
Sources
km to meters conversion table
| Kilometer | Meter |
|---|---|
| 1 km | 1,000 m |
| 2 km | 2,000 m |
| 3 km | 3,000 m |
| 5 km | 5,000 m |
| 10 km | 10,000 m |
| 20 km | 20,000 m |
| 25 km | 25,000 m |
| 50 km | 50,000 m |
| 100 km | 100,000 m |
| 250 km | 250,000 m |
| 500 km | 500,000 m |
| 1,000 km | 1,000,000 m |
Frequently asked questions
How many meters are in a kilometer? +
There are 1,000 meters in one kilometer.
What is 10 km in m? +
10 km equals 10,000 m. Multiply 10 by 1,000.
How do I convert meter back to kilometer? +
Use kilometer = meter ÷ 1,000. The converter above handles both directions, or see our dedicated meters to km page.
How accurate is this kilometer to meter conversion? +
The factor used is 1,000, carried at full double precision. Where a unit has an exact legal definition the factor is exact rather than approximate. Rounding is applied only to the displayed result, so the answer is never a calculation done on an already-rounded number.
Is there a quick way to estimate km to m in my head? +
Multiply by 1,000. That matches the true factor of 1,000 exactly, so no adjustment is needed for a mental estimate.