Kilometers to Meters Converter

1 kilometer (km) equals 1,000 meters (m).

Quick answer

To convert kilometers to meters, multiply by 1,000: 5 km = 5,000 m, 0.4 km = 400 m.

  • 1 kilometer = 1,000 meters
  • 1 meter = 0.001 kilometers
  • Formula: m = km × 1,000
  • Quick estimate: move the decimal point three places right: 2.5 km = 2,500 m.

1 kilometer = 1,000 meters

How to convert kilometers to meters

m = km × 1,000

To convert kilometers to meters, multiply the number of kilometers by 1,000.

Example: 42 km to m

  1. Start with the value in kilometers: 42 km.
  2. Multiply by 1,000: 42 × 1,000 = 42,000.
  3. Result: 42 kilometers = 42,000 meters.

Going the other way, 1 meter = 0.001 kilometers, so to convert meters back to kilometers you divide by the same number. See meters to kilometers.

Where the conversion factor comes from

The meter is the SI base unit of length, defined since 1983 as the distance light travels in a vacuum in 1/299,792,458 of a second. Metric prefixes are exact powers of ten: 1 m = 100 cm = 1,000 mm, and 1 km = 1,000 m.

Mental math: km to m in your head

Move the decimal point three places to the right.

When you need to convert kilometers to meters

  • Running and cycling (a 400 m track lap is 0.4 km).
  • Maps and directions.

Common mistakes

  • Multiplying by 100.

Everyday kilometers in meters

ExampleKilometersMeters
Running track lap0.4 km400 m
A 5K race5 km5,000 m
Half marathon21.0975 km21,098 m

Kilometers to meters conversion table

Kilometers (km)Meters (m)
0.1 km 100 m
0.2 km 200 m
0.3 km 300 m
0.4 km 400 m
0.5 km 500 m
0.6 km 600 m
0.7 km 700 m
0.8 km 800 m
0.9 km 900 m
1 km 1,000 m
1.5 km 1,500 m
2 km 2,000 m
2.5 km 2,500 m
3 km 3,000 m
3.5 km 3,500 m
4 km 4,000 m
4.5 km 4,500 m
5 km 5,000 m
6 km 6,000 m
7 km 7,000 m
7.5 km 7,500 m
8 km 8,000 m
9 km 9,000 m
10 km 10,000 m
11 km 11,000 m
12 km 12,000 m
13 km 13,000 m
14 km 14,000 m
15 km 15,000 m
16 km 16,000 m
17 km 17,000 m
18 km 18,000 m
19 km 19,000 m
20 km 20,000 m
21 km 21,000 m
22 km 22,000 m
23 km 23,000 m
24 km 24,000 m
25 km 25,000 m
26 km 26,000 m

More km to m values

What is a kilometer?

The kilometer (also spelled kilometre) is a metric unit of length equal to 1,000 meters.

More about kilometers →

What is a meter?

The meter (also spelled metre) is the base unit of length in the International System of Units (SI).

More about meters →

Convert kilometers to other units

Convert other units to meters

Frequently asked questions

How many meters are in a kilometer?

One kilometer is 1,000 meters.

How many kilometers are in a meter?

One meter is 0.001 kilometers.

What is the formula to convert kilometers to meters?

m = km × 1,000.

How many meters are in a kilometer?

Exactly 1,000 meters.