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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.

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*Team Beefcake Racing is not responsible for any price changes, mis-marked items or any other mis-printed items. By purchasing items from Team Beefcake Racing, you are agreeing to all sections of our Disclaimer.

** Team Beefcake Inc. doesn’t ship non-CARB legal products to California. For help with finding a CARB exempt product, please call (855-TBR-RACE) to speak with a Product Specialist. Please see our (Carb Exempt Page) for full California shipping information.