Here are some other units of mass:

* Gram (g): A smaller unit of mass, 1000 grams equal 1 kilogram.

* Milligram (mg): An even smaller unit of mass, 1000 milligrams equal 1 gram.

* Tonne (t): A larger unit of mass, 1 tonne equals 1000 kilograms.

The specific unit used will depend on the object being measured. For example, you would use kilograms to measure the mass of a person, grams to measure the mass of a piece of fruit, and milligrams to measure the mass of a medicine tablet.