km to m Converter

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Convert kilometers to meters using the SI relation 1 km = 1,000 m. A 5 km park run is 5,000 m; the cruising altitude of 10 km is 10,000 m. Useful when an analytics report shows kilometers but the next pipeline step expects meters, or for translating sport distances into the meter-precision of an athletics track. Browser-local.

Kilometer (km)
Meter (m)

Kilometer (km) → Meter (m)

Quick reference table

Kilometer (km)Meter (m)
1 km1000 m
2 km2000 m
5 km5000 m
10 km10000 m
25 km25000 m
50 km50000 m
100 km100000 m

Glossary

Kilometer (km)

A kilometer is one thousand meters (1 km = 0.6214 mile = 0.5400 nautical mile). It is the standard road-distance unit everywhere except the United States, the United Kingdom and a handful of other countries. Marathon distances, highway speeds and geographic distances on most maps use kilometers.

Meter (m)

The meter is the SI base unit of length, defined since 1983 as the distance light travels in vacuum in 1/299,792,458 of a second. One meter equals 100 cm, 1000 mm, 3.2808 ft or 1.0936 yd. It anchors all other metric length units and is the backbone of scientific and engineering measurement worldwide.

Metric system (SI)

The metric system is a decimal system of measurement built around the meter for length, the kilogram for mass and the second for time, with multiples and submultiples expressed as powers of ten (millimeter, centimeter, kilometer). Adopted in France in 1799 and codified internationally as the International System of Units (SI) in 1960, it is now the official measurement system in nearly every country and the standard in science and engineering worldwide.

Imperial / US Customary system

The imperial system is the historical English system of weights and measures whose length units are the inch, foot, yard and mile (12 in = 1 ft, 3 ft = 1 yd, 1,760 yd = 1 mi). Codified by the British Weights and Measures Act of 1824 and aligned with US Customary by the international yard-and-pound agreement of 1959 (1 inch = 25.4 mm exactly), it is still used in the United States, the United Kingdom and a handful of other countries for everyday distances.

Related tools

Meters to Kilometers
Convert meters to kilometers — 1 m = 0.001 km (1000 m = 1 km)
Kilometers to Miles
Convert kilometers to miles — 1 km = 0.6214 mi (1 mi = 1.6093 km)
Millimeters to Kilometers
Convert millimeters to kilometers — 1 mm = 0.000001 km
Length Converter
Convert length units between metric and imperial — mm, cm, m, km, inches, feet, yards, miles