Unit Converter
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 438 miles per hour into feet per second we have to multiply 438 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
438 mph → V(ft/s)
Solve the above proportion to obtain the velocity V in feet per second:
V(ft/s) = 438 mph × 1.4666666666667 ft/s
V(ft/s) = 642.4 ft/s
The final result is:
438 mph → 642.4 ft/s
We conclude that 438 miles per hour is equivalent to 642.4 feet per second:
438 miles per hour = 642.4 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 0.0015566625155666 × 438 miles per hour.
Another way is saying that 438 miles per hour is equal to 1 ÷ 0.0015566625155666 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 thirty-eight miles per hour is approximately six hundred forty-two point four feet per second:
438 mph ≅ 642.4 ft/s
An alternative is also that one foot per second is approximately zero point zero zero two times four hundred thirty-eight 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
miles per hour (mph) | feet per second (ft/s) |
---|---|
439 miles per hour | 643.867 feet per second |
440 miles per hour | 645.333 feet per second |
441 miles per hour | 646.8 feet per second |
442 miles per hour | 648.267 feet per second |
443 miles per hour | 649.733 feet per second |
444 miles per hour | 651.2 feet per second |
445 miles per hour | 652.667 feet per second |
446 miles per hour | 654.133 feet per second |
447 miles per hour | 655.6 feet per second |
448 miles per hour | 657.067 feet per second |