Conversion formula

The conversion factor from kilometers per hour to feet per second is 0.91134441528215, which means that 1 kilometer per hour is equal to 0.91134441528215 feet per second:

1 km/h = 0.91134441528215 ft/s

To convert 421 kilometers per hour into feet per second we have to multiply 421 by the conversion factor in order to get the velocity amount from kilometers per hour to feet per second. We can also form a simple proportion to calculate the result:

1 km/h → 0.91134441528215 ft/s

421 km/h → V_(ft/s)

Solve the above proportion to obtain the velocity V in feet per second:

V_(ft/s) = 421 km/h × 0.91134441528215 ft/s

V_(ft/s) = 383.67599883379 ft/s

The final result is:

421 km/h → 383.67599883379 ft/s

We conclude that 421 kilometers per hour is equivalent to 383.67599883379 feet per second:

421 kilometers per hour = 383.67599883379 feet per second

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot per second is equal to 0.0026063657957224 × 421 kilometers per hour.

Another way is saying that 421 kilometers per hour is equal to 1 ÷ 0.0026063657957224 feet per second.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty-one kilometers per hour is approximately three hundred eighty-three point six seven six feet per second:

421 km/h ≅ 383.676 ft/s

An alternative is also that one foot per second is approximately zero point zero zero three times four hundred twenty-one kilometers per hour.

Conversion table

kilometers per hour to feet per second chart

For quick reference purposes, below is the conversion table you can use to convert from kilometers per hour to feet per second