How many cm in 1 kilometer?
The answer is 100000.
We assume you are converting between centimetre and kilometre.
You can view more details on each measurement unit:
cm or kilometer
The SI base unit for length is the metre.
1 metre is equal to 100 cm, or 0.001 kilometer.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between centimetres and kilometres.
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You can do the reverse unit conversion from kilometer to cm, or enter any two units below:
A centimetre (American spelling centimeter, symbol cm) is a unit of length that is equal to one hundreth of a metre, the current SI base unit of length. A centimetre is part of a metric system. It is the base unit in the centimetre-gram-second system of units. A corresponding unit of area is the square centimetre. A corresponding unit of volume is the cubic centimetre.
The centimetre is a now a non-standard factor, in that factors of 103 are often preferred. However, it is practical unit of length for many everyday measurements. A centimetre is approximately the width of the fingernail of an adult person.
A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). It is approximately equal to 0.621 miles, 1094 yards or 3281 feet.
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