Conversion formula

The conversion factor from miles per hour to feet per second is 1.4666666666667, which means that 1 mile per hour is equal to 1.4666666666667 feet per second:

1 mph = 1.4666666666667 ft/s

To convert 990 miles per hour into feet per second we have to multiply 990 by the conversion factor in order to get the velocity amount from miles per hour to feet per second. We can also form a simple proportion to calculate the result:

1 mph → 1.4666666666667 ft/s

990 mph → V_(ft/s)

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

V_(ft/s) = 990 mph × 1.4666666666667 ft/s

V_(ft/s) = 1452 ft/s

The final result is:

990 mph → 1452 ft/s

We conclude that 990 miles per hour is equivalent to 1452 feet per second:

990 miles per hour = 1452 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 0.00068870523415978 × 990 miles per hour.

Another way is saying that 990 miles per hour is equal to 1 ÷ 0.00068870523415978 feet per second.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that nine hundred ninety miles per hour is approximately one thousand four hundred fifty-two feet per second:

990 mph ≅ 1452 ft/s

An alternative is also that one foot per second is approximately zero point zero zero one times nine hundred ninety miles per hour.

Conversion table

miles per hour to feet per second chart

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