With this information, you can calculate the quantity of miles per hour 421 feet per minute is equal to.

¿What is the inverse calculation between 1 mile per hour and 421 feet per minute?

Performing the inverse calculation of the relationship between units, we obtain that 1 mile per hour is 0.20902613 times 421 feet per minute.

Which is the same to say that 421 feet per minute is 4.7840909 miles per hour.

Four hundred twenty-one feet per minute equals to four miles per hour. *Approximation

A mile per hour is zero times four hundred twenty-one feet per minute. *Approximation