## 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 99 feet per second into miles per hour we have to multiply 99 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

99 ft/s → V_{(mph)}

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

V_{(mph)} = 99 ft/s × 0.68181818181818 mph

V_{(mph)} = 67.5 mph

The final result is:

99 ft/s → 67.5 mph

We conclude that **99 feet per second is equivalent to 67.5 miles per hour**:

99 feet per second = 67.5 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 0.014814814814815 × 99 feet per second**.

Another way is saying that *99 feet per second is equal to 1 ÷ 0.014814814814815 miles per hour*.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that **ninety-nine feet per second is approximately sixty-seven point five miles per hour**:

99 ft/s ≅ 67.5 mph

An alternative is also that *one mile per hour is approximately zero point zero one five times ninety-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) |
---|---|

100 feet per second | 68.182 miles per hour |

101 feet per second | 68.864 miles per hour |

102 feet per second | 69.545 miles per hour |

103 feet per second | 70.227 miles per hour |

104 feet per second | 70.909 miles per hour |

105 feet per second | 71.591 miles per hour |

106 feet per second | 72.273 miles per hour |

107 feet per second | 72.955 miles per hour |

108 feet per second | 73.636 miles per hour |

109 feet per second | 74.318 miles per hour |