The symbol for the kilogram, a metric unit of mass equal to 1000 grams.

kilo

Symbol: k

A metric prefix equivalent to 1000

kilo

Symbol: k

A common slang name for the kilogram.

kilogram

Symbol: kg

A very common metric unit of mass equivalent to 1000 grams. This is the base unit of mass in both the SI and MKS metric systems.

It is defined as the mass of the international prototype of the kilogram, a platinum-iridium bar made in the 1800s which is kept in a locked vault at the International Bureau of Weights and Measures (BIPM) near Paris, France. Copies of the bar, called national prototypes of the kilogram, are kept at various standards agencies in nearly every industrial nation.

Originally it was defined as 1000 times the mass of a cubic centimeter of pure water at the temperature of melting ice. Later this was changed to the mass of one litre of pure water at standard atmospheric pressure and temperature at its highest density. These definitions were difficult to create accurately, so the definition was changed to the current definition in 1889.

kilogramme

Symbol: kg

The original French spelling of the kilogram.

kiloliter

Symbol: kl

Alternate symbols: kL

A metric unit of volume equivalent to 1000 liters.

kilometer

Symbol: km

A metric unit of length equivalent to 1000 meters.

kl

Alternate symbols: kL

The symbol for the kiloliter, a metric unit of volume equal to 1000 liters.

km

The symbol for the kilometer, a metric unit of length equal to 1000 meters.