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This calculator will calculate the approximate 1/4 mile time and trap speed of your vehicle. To do so, enter in the peak wheel horsepower of the vehicle, and the vehicle weight including driver, in the form below.
This calculator estimates your 60 foot, eighth and quarter mile elapsed times and trap speed when given the weight of the car and flywheel or wheel horsepower. An 11% driveline loss is assumed for Wheel HP.
Wallace Racing - ET/MPH/HP Calculator for Quarter Mile Runs. Weight is as the car sits on the line: driver and gas in it. HP is at the crank. The answers below will be for at sea level and standard pressure/temperature. (no weather correction).
DRAG PERFORMANCE CALCULATOR. Vehicle Weight (in pounds) Vehicle Horsepower. RPM through lights (finish line) Tire Diameter (Hght.) in Inches. 1/4 Mile ET. 1/4 Mile Top End Speed. Ideal 1/4 Mile Gear Ratio.
ET calculator: 1/4 mile, 1/8 mile, 0 – 60 mph. Got a “friend” boasting about hypothetical performance figures? See if their claims hold up with this ET calculator.
You can use this quarter mile calculator to determine the terminal speed (trap speed) and quarter-mile elapsed time (ET) of a vehicle based on its weight and power. How to use the quarter mile calculator:
Calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio for a given application based on the Vehicle Weight (in pounds), Vehicle Horsepower (at the flywheel), RPM through lights (finish line), and Tire Diameter (Height) in Inches.
