## 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 505 feet per second into miles per hour we have to multiply 505 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

505 ft/s → V(mph)

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

V(mph) = 505 ft/s × 0.68181818181818 mph

V(mph) = 344.31818181818 mph

The final result is:

505 ft/s → 344.31818181818 mph

We conclude that 505 feet per second is equivalent to 344.31818181818 miles per hour:

505 feet per second = 344.31818181818 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 0.0029042904290429 × 505 feet per second.

Another way is saying that 505 feet per second is equal to 1 ÷ 0.0029042904290429 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five hundred five feet per second is approximately three hundred forty-four point three one eight miles per hour:

505 ft/s ≅ 344.318 mph

An alternative is also that one mile per hour is approximately zero point zero zero three times five hundred five 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)
506 feet per second 345 miles per hour
507 feet per second 345.682 miles per hour
508 feet per second 346.364 miles per hour
509 feet per second 347.045 miles per hour
510 feet per second 347.727 miles per hour
511 feet per second 348.409 miles per hour
512 feet per second 349.091 miles per hour
513 feet per second 349.773 miles per hour
514 feet per second 350.455 miles per hour
515 feet per second 351.136 miles per hour