421 feet per second in kilometers per hour

Result

The conversion result is: 421 feet per second is equivalent to 461.95488 kilometers per hour.^[1]

Conversion in the opposite direction

The inverse of the conversion factor is that 1 kilometer per hour is equal to 0.00216471357549032 times 421 feet per second.

It can also be expressed as: 421 feet per second is equal to 1 / 0.00216471357549032 kilometers per hour.

Approximation

An approximate numerical result would be: four hundred and twenty-one feet per second is about four hundred and sixty-one point nine four kilometers per hour, or alternatively, a kilometer per hour is about zero times four hundred and twenty-one feet per second.