Conversion formula

The conversion factor from kilometers to centimeters is 100000, which means that 1 kilometer is equal to 100000 centimeters:

1 km = 100000 cm

To convert 421.5 kilometers into centimeters we have to multiply 421.5 by the conversion factor in order to get the length amount from kilometers to centimeters. We can also form a simple proportion to calculate the result:

1 km → 100000 cm

421.5 km → L_(cm)

Solve the above proportion to obtain the length L in centimeters:

L_(cm) = 421.5 km × 100000 cm

L_(cm) = 42150000 cm

The final result is:

421.5 km → 42150000 cm

We conclude that 421.5 kilometers is equivalent to 42150000 centimeters:

421.5 kilometers = 42150000 centimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 centimeter is equal to 2.3724792408066E-8 × 421.5 kilometers.

Another way is saying that 421.5 kilometers is equal to 1 ÷ 2.3724792408066E-8 centimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty-one point five kilometers is approximately forty-two million one hundred fifty thousand centimeters:

421.5 km ≅ 42150000 cm

An alternative is also that one centimeter is approximately zero times four hundred twenty-one point five kilometers.

Conversion table

kilometers to centimeters chart

For quick reference purposes, below is the conversion table you can use to convert from kilometers to centimeters