## 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 109 feet per second into miles per hour we have to multiply 109 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

109 ft/s → V(mph)

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

V(mph) = 109 ft/s × 0.68181818181818 mph

V(mph) = 74.318181818182 mph

The final result is:

109 ft/s → 74.318181818182 mph

We conclude that 109 feet per second is equivalent to 74.318181818182 miles per hour:

109 feet per second = 74.318181818182 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 0.013455657492355 × 109 feet per second.

Another way is saying that 109 feet per second is equal to 1 ÷ 0.013455657492355 miles per hour.

## Approximate result

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

109 ft/s ≅ 74.318 mph

An alternative is also that one mile per hour is approximately zero point zero one three times one hundred nine 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)
110 feet per second 75 miles per hour
111 feet per second 75.682 miles per hour
112 feet per second 76.364 miles per hour
113 feet per second 77.045 miles per hour
114 feet per second 77.727 miles per hour
115 feet per second 78.409 miles per hour
116 feet per second 79.091 miles per hour
117 feet per second 79.773 miles per hour
118 feet per second 80.455 miles per hour
119 feet per second 81.136 miles per hour