21 meters in kilometers
Conversion
21 meters is equivalent to 0.021 kilometers.[1]
Conversion formula
How to convert 21 meters to kilometers?
We know (by definition) that:
We can set up a proportion to solve for the number of kilometers.
Now, we cross multiply to solve for our unknown :
Conclusion:
Conversion in the opposite direction
The inverse of the conversion factor is that 1 kilometer is equal to 47.6190476190476 times 21 meters.
It can also be expressed as: 21 meters is equal to kilometers.
Approximation
An approximate numerical result would be: twenty-one meters is about zero point zero two kilometers, or alternatively, a kilometer is about forty-seven point six one times twenty-one meters.
Footnotes
[1] 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.