G-TECH/Pro Aero Drag HP Loss Calculator

This form will calculate the HP that is lost due to aerodynamic drag at a given speed.

Cd * A * V3
HP loss due to Aerodynamic Drag is approximately equal to:  


Item Value Units
Drag Coefficient (Cd) N/A
Frontal Area Ft.2 m2
Speed MPH km/h

This calculator illustrates how the horsepower lost to aerodynamic drag goes up by 8 times for each time the speed doubles!

For example, input a speed of 20 MPH and look at the calculated HP loss, then change the speed to 40 MPH and re-calculate the HP loss -- it doesn't double, it goes up by a factor of 8!