Kilometers to Meters
Convert kilometers to meters instantly — one kilometer is 1000 meters.
| Kilometers | Meters |
|---|---|
| 1 km | 1000 m |
| 2 km | 2000 m |
| 3 km | 3000 m |
| 5 km | 5000 m |
| 10 km | 10000 m |
| 25 km | 25000 m |
| 50 km | 50000 m |
| 100 km | 100000 m |
How to use
- Enter a value in the Kilometers field.
- The Meters figure appears immediately — no button to press.
- Typing in the Meters field converts back to Kilometers the same way.
- Use the reference table for the values that come up most often.
Kilometers to Meters formula
The factor from kilometers to meters is 1000.
m = km × 1000
Put another way, one kilometer is exactly 1,000 meters.
Why this factor: the kilometer and the meter are both defined against the meter, so dividing one definition by the other gives 1000 directly. Both definitions are set out in full below.
To go the other way, divide by 1000 — or use the Meters to Kilometers converter, which is the same calculation reversed.
Worked example
Given 5 km, multiplying by 1000 yields 5000 m.
5 km × 1000 = 5000 m
The converter above does this for any value you type, in either direction.
What is a kilometer?
A kilometer is 1,000 meters, the standard unit for road distances and geography in most of the world.
Definition: Exactly 1,000 meters by SI prefix definition — 'kilo' means 10³.
Where it is used: Road signs, running and cycling distances, and map scales outside the US and UK.
What is a meter?
The meter is the SI base unit of length — the reference every other length unit is now defined against.
Definition: Since 1983 the meter has been defined by fixing the speed of light in vacuum at exactly 299,792,458 meters per second, so a meter is the distance light travels in 1/299,792,458 of a second.
Where it is used: Universal in science, engineering and everyday measurement everywhere except the United States.
Kilometers vs Meters
The kilometer is a metric unit while the meter is an SI unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many meters are in a kilometer?
One kilometer equals 1000 meters.
What is the formula to convert kilometers to meters?
Multiply the number of kilometers by 1000. To reverse it, divide by 1000 instead.
How do I convert meters back to kilometers?
Divide by 1000, which is the same as multiplying by 0.001.
How many meters are in 10 kilometers?
10 km works out to 10000 m.
How is the kilometer defined?
Exactly 1,000 meters by SI prefix definition — 'kilo' means 10³.