Kilometer to Millimeter Conversion Result

Kilometer: (ˈkɪləmiːtər) is a unit of length in the International System of Units (SI).

International spelling - kilometer.
American spelling - kilometre.
SI symbol (abbreviation) - km
Equivalent to one thousand meters.

Interesting facts:

• Healthy adult human can walk 1 km in approximately 10 minutes
• 10 000 steps that every human should walk during the day is approximately 8 km
• History says that the words “meter” and “kilometer” were founded in France in 1795
• Kilometer zero is a particular location in different countries (usually in capitals) from which distances are traditionally measured. In Chicago, for instance, the intersection of State and Madison is defined as a zero point (called mile zero)


Millimeter: is a unit of length equal to one thousandth of a meter.

International spelling - millimeter.
American spelling - millimetre.
SI symbol (abbreviation) - mm.
In 1 meter there are one thousand millimetres. In 1 centimeter there are ten millimetres. One millimetre is also equal to 1000 micrometers.

Interesting facts:

• The word millimeter consists of the latin word “mille”, that means “one thousand”, and the word “meter”
• Millimeter is used to measure some very small objects when measurement should be more precise than cm
• On a metric ruler, each individual line represents a millimeter
• A thickness of a credit card is approximately 1 milllimeter