Conversion formula

The conversion factor from miles per hour to meters per second is 0.44704, which means that 1 mile per hour is equal to 0.44704 meters per second:

1 mph = 0.44704 m/s

To convert 309 miles per hour into meters per second we have to multiply 309 by the conversion factor in order to get the velocity amount from miles per hour to meters per second. We can also form a simple proportion to calculate the result:

1 mph → 0.44704 m/s

309 mph → V_(m/s)

Solve the above proportion to obtain the velocity V in meters per second:

V_(m/s) = 309 mph × 0.44704 m/s

V_(m/s) = 138.13536 m/s

The final result is:

309 mph → 138.13536 m/s

We conclude that 309 miles per hour is equivalent to 138.13536 meters per second:

309 miles per hour = 138.13536 meters per second

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 meter per second is equal to 0.007239276026066 × 309 miles per hour.

Another way is saying that 309 miles per hour is equal to 1 ÷ 0.007239276026066 meters per second.

Approximate result

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

309 mph ≅ 138.135 m/s

An alternative is also that one meter per second is approximately zero point zero zero seven times three hundred nine miles per hour.

Conversion table

miles per hour to meters per second chart

For quick reference purposes, below is the conversion table you can use to convert from miles per hour to meters per second