421 kilometers in centimeters
Result
The conversion result is: 421 kilometers is equivalent to 42100000 centimeters.[1]
Conversion formula
How to convert 421 kilometers to centimeters?
We know (by definition) that: 1 km = 100000 cm.
We can set up a proportion to solve for the number of centimeters.
1 km / 421 km = 100000 cm / x cm
Now, we cross multiply to solve for our unknown x:
x cm = (421 km / 1 km) * 100000 cm → x cm = 42100000 cm
Conclusion:
421 km = 42100000 cm
Conversion in the opposite direction
The inverse of the conversion factor is that 1 centimeter is equal to 2.37529691211401e-08 times 421 kilometers.
It can also be expressed as: 421 kilometers is equal to 1 / 2.37529691211401e-08 centimeters.
Approximation
An approximate numerical result would be: four hundred and twenty-one kilometers is about forty-two million, one hundred thousand centimeters, or alternatively, a centimeter is about zero times four hundred and twenty-one kilometers.
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.