ET Calculator
Calculate your vehicle’s elapsed time (ET) for drag racing. Estimate quarter mile times, 1/8 mile times, and performance metrics based on power, weight, and traction.
Step 1: Vehicle Details
Understanding Elapsed Time (ET)
Elapsed Time (ET) is the total time a vehicle takes to travel from a standing start to the finish line of a drag strip. Lower times indicate better acceleration performance.
Step 2: Additional Options
About Traction Factor
Traction factor accounts for how effectively power is transferred to the ground. Higher values (0.9-1.0) represent optimal conditions like drag slicks on prepped surfaces. Lower values (0.7-0.8) represent street tires on normal pavement.
Drag Racing Performance Results
Estimated Elapsed Time
Vehicle Performance Comparison
| Vehicle Type | Weight | Power | 1/4 Mile Time | Trap Speed |
|---|
Power-to-Weight Ratio Analysis
Elapsed Time Calculation Formula
ET = K × (Weight/Power)1/3
The elapsed time is calculated using a simplified physics-based formula that considers the power-to-weight ratio. Actual performance may vary based on traction, gearing, aerodynamics, and driver skill.
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