How to convert 3 kilometers to meters?
We know (by definition) that:
We can set up a proportion to solve for the number of meters.
Now, we cross multiply to solve for our unknown :
Conversion in the opposite direction
The inverse of the conversion factor is that 1 meter is equal to 0.000333333333333333 times 3 kilometers.
It can also be expressed as: 3 kilometers is equal to meters.
An approximate numerical result would be: three kilometers is about three thousand meters, or alternatively, a meter is about zero times three kilometers.
 The precision is 15 significant digits (fourteen digits to the right of the decimal point).Results may contain small errors due to the use of floating point arithmetic.