## 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 9.8 feet per second into miles per hour we have to multiply 9.8 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

9.8 ft/s → V(mph)

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

V(mph) = 9.8 ft/s × 0.68181818181818 mph

V(mph) = 6.6818181818182 mph

The final result is:

9.8 ft/s → 6.6818181818182 mph

We conclude that 9.8 feet per second is equivalent to 6.6818181818182 miles per hour:

9.8 feet per second = 6.6818181818182 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 0.14965986394558 × 9.8 feet per second.

Another way is saying that 9.8 feet per second is equal to 1 ÷ 0.14965986394558 miles per hour.

## Approximate result

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

9.8 ft/s ≅ 6.682 mph

An alternative is also that one mile per hour is approximately zero point one five times nine point eight 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)
10.8 feet per second 7.364 miles per hour
11.8 feet per second 8.045 miles per hour
12.8 feet per second 8.727 miles per hour
13.8 feet per second 9.409 miles per hour
14.8 feet per second 10.091 miles per hour
15.8 feet per second 10.773 miles per hour
16.8 feet per second 11.455 miles per hour
17.8 feet per second 12.136 miles per hour
18.8 feet per second 12.818 miles per hour
19.8 feet per second 13.5 miles per hour