KILOMETER to FEMTOMETER converter

Precise unit converter

km

fm

Units used

FULL UNIT NAME	kilometer	femtometer
ABBREVIATION / SYMBOL	km	fm

How can you convert 1 kilometer to femtometers?

How many femtometers 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{1.000000 \times 10^{18} fm}{1 km}

There are 1e18 femtometers in a kilometer. Thus, we must multiply the number of kilometers (1) by 1e18 to get femtometers.

Conversion table between kilometers and femtometers near 1 km:

Alternative spelling

one kilometer to femtometers, 1 kilometer to femtometers, 1 km to fm, 1km to femtometers, 1 kilometer in femtometers, 1 km in fm, 1km in femtometers.