## Conversion formula

The conversion factor from feet per second to miles per hour is 0.68181818181818, which means that 1 foot per second is equal to 0.68181818181818 miles per hour:

1 ft/s = 0.68181818181818 mph

To convert 667 feet per second into miles per hour we have to multiply 667 by the conversion factor in order to get the velocity amount from feet per second to miles per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 0.68181818181818 mph

667 ft/s → V(mph)

Solve the above proportion to obtain the velocity V in miles per hour:

V(mph) = 667 ft/s × 0.68181818181818 mph

V(mph) = 454.77272727273 mph

The final result is:

667 ft/s → 454.77272727273 mph

We conclude that 667 feet per second is equivalent to 454.77272727273 miles per hour:

667 feet per second = 454.77272727273 miles per hour

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 mile per hour is equal to 0.0021989005497251 × 667 feet per second.

Another way is saying that 667 feet per second is equal to 1 ÷ 0.0021989005497251 miles per hour.

## Approximate result

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

667 ft/s ≅ 454.773 mph

An alternative is also that one mile per hour is approximately zero point zero zero two times six hundred sixty-seven feet per second.

## Conversion table

### feet per second to miles per hour chart

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

feet per second (ft/s) miles per hour (mph)
668 feet per second 455.455 miles per hour
669 feet per second 456.136 miles per hour
670 feet per second 456.818 miles per hour
671 feet per second 457.5 miles per hour
672 feet per second 458.182 miles per hour
673 feet per second 458.864 miles per hour
674 feet per second 459.545 miles per hour
675 feet per second 460.227 miles per hour
676 feet per second 460.909 miles per hour
677 feet per second 461.591 miles per hour