## 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 18 feet per second into miles per hour we have to multiply 18 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

18 ft/s → V(mph)

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

V(mph) = 18 ft/s × 0.68181818181818 mph

V(mph) = 12.272727272727 mph

The final result is:

18 ft/s → 12.272727272727 mph

We conclude that 18 feet per second is equivalent to 12.272727272727 miles per hour:

18 feet per second = 12.272727272727 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 0.081481481481481 × 18 feet per second.

Another way is saying that 18 feet per second is equal to 1 ÷ 0.081481481481481 miles per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eighteen feet per second is approximately twelve point two seven three miles per hour:

18 ft/s ≅ 12.273 mph

An alternative is also that one mile per hour is approximately zero point zero eight one times eighteen 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)
19 feet per second 12.955 miles per hour
20 feet per second 13.636 miles per hour
21 feet per second 14.318 miles per hour
22 feet per second 15 miles per hour
23 feet per second 15.682 miles per hour
24 feet per second 16.364 miles per hour
25 feet per second 17.045 miles per hour
26 feet per second 17.727 miles per hour
27 feet per second 18.409 miles per hour
28 feet per second 19.091 miles per hour