## 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 40 feet per second into miles per hour we have to multiply 40 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

40 ft/s → V(mph)

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

V(mph) = 40 ft/s × 0.68181818181818 mph

V(mph) = 27.272727272727 mph

The final result is:

40 ft/s → 27.272727272727 mph

We conclude that 40 feet per second is equivalent to 27.272727272727 miles per hour:

40 feet per second = 27.272727272727 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 0.036666666666667 × 40 feet per second.

Another way is saying that 40 feet per second is equal to 1 ÷ 0.036666666666667 miles per hour.

## Approximate result

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

40 ft/s ≅ 27.273 mph

An alternative is also that one mile per hour is approximately zero point zero three seven times forty 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)
41 feet per second 27.955 miles per hour
42 feet per second 28.636 miles per hour
43 feet per second 29.318 miles per hour
44 feet per second 30 miles per hour
45 feet per second 30.682 miles per hour
46 feet per second 31.364 miles per hour
47 feet per second 32.045 miles per hour
48 feet per second 32.727 miles per hour
49 feet per second 33.409 miles per hour
50 feet per second 34.091 miles per hour