## kilometer

**Kilometer** is a multiple of the

**meter** unit. The

**kilo** prefix stands for 1000 therefore, 1 kilometer = 1000 meter units.

**Meter** is a unit of measurement of length. The definition for meter is the following:

1 kilometer is 1000 meters

The symbol for kilometer is

**km**## millimeter

**Millimeter** is a subdivision of the

**meter** unit. The

**milli** prefix stands for 0.001 therefore, 1 millimeter = 0.001 meter units.

**Meter** is a unit of measurement of length. The definition for meter is the following:

1 millimeter is thousandth (1/1000) of a meter

The symbol for millimeter is

**mm**