Unit Converter
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 620 feet per second into miles per hour we have to multiply 620 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
620 ft/s → V(mph)
Solve the above proportion to obtain the velocity V in miles per hour:
V(mph) = 620 ft/s × 0.68181818181818 mph
V(mph) = 422.72727272727 mph
The final result is:
620 ft/s → 422.72727272727 mph
We conclude that 620 feet per second is equivalent to 422.72727272727 miles per hour:
620 feet per second = 422.72727272727 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 0.0023655913978495 × 620 feet per second.
Another way is saying that 620 feet per second is equal to 1 ÷ 0.0023655913978495 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 twenty feet per second is approximately four hundred twenty-two point seven two seven miles per hour:
620 ft/s ≅ 422.727 mph
An alternative is also that one mile per hour is approximately zero point zero zero two times six hundred twenty 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) |
---|---|
621 feet per second | 423.409 miles per hour |
622 feet per second | 424.091 miles per hour |
623 feet per second | 424.773 miles per hour |
624 feet per second | 425.455 miles per hour |
625 feet per second | 426.136 miles per hour |
626 feet per second | 426.818 miles per hour |
627 feet per second | 427.5 miles per hour |
628 feet per second | 428.182 miles per hour |
629 feet per second | 428.864 miles per hour |
630 feet per second | 429.545 miles per hour |