KILOMETER to MILLIMETER converter

Precise unit converter

km

mm

Units used

FULL UNIT NAME	kilometer	millimeter
ABBREVIATION / SYMBOL	km	mm

How can you convert 1 kilometer to millimeters?

How many millimeters are in one kilometer? You can find out the answer in one of two ways:

use our calculator above for maximum accuracy or
use the following equation:

1 km \times \frac{1000000 mm}{1 km}

There are 1000000 millimeters in a kilometer. Thus, we must multiply the number of kilometers (1) by 1000000 to get millimeters.

Conversion table between kilometers and millimeters near 1 km:

Alternative spelling

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