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Performance Vehicle Calculators

Quarter Mile Calculator

Estimated quarter-mile time and trap speed from power and weight, using the classic formulas.

Enter values

Results update as you type.

Result

Quarter mile time

13.218 seconds

These are empirical estimates assuming good traction — a real run depends on tyres, gearing and the launch.

Trap speed
103.12 mph
Trap speed in km/h
166
Power to weight
188.7 hp/tonne
Estimated 0–100 km/h
11.49 s
Total weight used
1,590 kg

About the Quarter Mile Calculator

Estimated quarter-mile time and trap speed from power and weight, using the classic formulas.

Also known as: et calculator, drag strip calculator, trap speed calculator, 1/4 mile time.

How to use this calculator

  1. Enter power, weight, driver and fuel.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

ET = 5.825 × (weight ÷ power)^⅓ · trap = 234 × (power ÷ weight)^⅓

Worked example

Using the values pre-filled in the calculator above:

  • Power = 300 hp
  • Weight = 1,500 kg
  • Driver and fuel = 90 kg

the calculator returns:

  • Quarter mile time: 13.218 seconds
  • Trap speed: 103.12 mph
  • Trap speed in km/h: 166
  • Power to weight: 188.7 hp/tonne