Online Dyno / Desktop Dyno for your High Performance Vehicle

Online Dyno by RPM Outlet

Test your Reaction Time

Input the weight and 1/4-mile Trap speed of your vehicle.
Our calculator will generate its rear wheel horsepower.


Vehicle Weight
In Pounds

1/4 Mile
Trap Speed in MPH
  Your Estimated
Rear Wheel HP is:

E.T. Calculator, You will need to supply the Weight and Horsepower.

The calculator will generate:
The elapse time your vehicle should run and its 1/4 trap speed.

  Vehicle Weight
In Pounds
Rear Wheel HP
Trap Speed
in MPH

Note: the elapse time is the approximate amount of time that your vehicle should be running. Although many factors influence elapse time, the main factor is traction.

In most cases, if your vehicle does not have enough traction, your elapse time will be higher than the estimated time.

The other extreme is also possible and usually occurs when you are using racing slick tires.

Our horsepower calculation is correct by the definition of horsepower. Horsepower is a measure of the force required to accelerate a weight to a known speed in a known distance. This means that the generated horsepower provided by this calculator, is the actual horsepower at the rear wheels.