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Unit Converter

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 121.2 feet per second into miles per hour we have to multiply 121.2 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

121.2 ft/s → V(mph)

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

V(mph) = 121.2 ft/s × 0.68181818181818 mph

V(mph) = 82.636363636364 mph

The final result is:

121.2 ft/s → 82.636363636364 mph

We conclude that 121.2 feet per second is equivalent to 82.636363636364 miles per hour:

121.2 feet per second = 82.636363636364 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 0.012101210121012 × 121.2 feet per second.

Another way is saying that 121.2 feet per second is equal to 1 ÷ 0.012101210121012 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 twenty-one point two feet per second is approximately eighty-two point six three six miles per hour:

121.2 ft/s ≅ 82.636 mph

An alternative is also that one mile per hour is approximately zero point zero one two times one hundred twenty-one point two 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)
122.2 feet per second 83.318 miles per hour
123.2 feet per second 84 miles per hour
124.2 feet per second 84.682 miles per hour
125.2 feet per second 85.364 miles per hour
126.2 feet per second 86.045 miles per hour
127.2 feet per second 86.727 miles per hour
128.2 feet per second 87.409 miles per hour
129.2 feet per second 88.091 miles per hour
130.2 feet per second 88.773 miles per hour
131.2 feet per second 89.455 miles per hour