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Quarter Mile Calculator

This calculator allows you to interactively change the variables that determine your quarter mile elapsed time and trap speed.

You can alter horsepower and/or weight and see the estimated ET and MPH graphed in real-time.

For example, you may want to know how fast (or slow) your car might be at the dragstrip. Or, maybe you'd like to find out if removing some extra weight will be worthwhile.

Drag the horsepower and weight slider bars around and see how it affects your trap time and speed.


1.The ET, MPH, and HP are estimated. Reaction time and traction are not taken into consideration.

The calculations of elapsed time and speed are based on gross horsepower, or flywheel horsepower, or brake horsepower, or whatever you want to call it.

The horsepower at drive wheels figure is simply a 10% loss of HP from the engine to the road. That could be too much, not enough, or not enough too much.

Credit to for the calculator.

*Team Beefcake Racing is not responsible for any price changes, mis-marked items or any other mis-printed items. Unless explicitly stated otherwise, all products sold by Team Beefcake Racing are designated Race Only and are solely for competition/off road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off- road use, may be in violation of local, state, and Federal laws. Team Beefcake Racing does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer. By purchasing items from Team Beefcake Racing, you are agreeing to all sections of our Disclaimer.