0-60 & Quarter Mile Calculator
Estimate a car’s quarter-mile elapsed time, trap speed, and 0–60 mph from its horsepower and weight, using the classic power-to-weight equations. Calculates in your browser.
Estimated quarter-mile ET
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Show the math
These are long-standing empirical drag-racing approximations, fitted to real quarter-mile passes:
ET = 5.825 × ∛(weight ÷ hp)
trap = 234 × ∛(hp ÷ weight)
0–60 ≈ 0.55 × ET
These are rough estimates: real times depend hugely on traction, gearing, aerodynamics and driver skill. The 0–60 line is our own rough approximation (about 55% of the quarter-mile time), not a published formula or a measurement. All math runs locally in your browser.
What this does
A quarter-mile calculator estimates a car’s quarter-mile elapsed time, trap speed, and 0–60 mph from its horsepower and weight, using the classic power-to-weight equations.
How it works
It uses long-standing empirical drag-racing approximations: ET equals 5.825 times the cube root of weight ÷ hp, and trap speed equals 234 times the cube root of hp ÷ weight. The 0–60 figure is a rough approximation of about 55% of the quarter-mile ET.
ET = 5.825 × ∛(weight ÷ hp)
How to use it
- Enter the horsepower.
- Enter the vehicle weight.
- Read the estimated quarter-mile ET.
- See the trap speed and 0–60 time.
Understanding your result
These are estimates. Real times depend heavily on traction, gearing, aerodynamics, transmission, and driver skill, so treat them as a ballpark for comparing builds.
Example
A 3,200 lb car with 300 hp runs roughly a 12.8-second quarter mile.
Last updated .
Frequently asked questions
How is the quarter-mile time estimated?
It uses long-standing empirical equations fitted to real drag-strip passes: ET = 5.825 × ∛(weight ÷ hp) and trap speed = 234 × ∛(hp ÷ weight). Published calculators credit them to different authors, so treat them as approximations that relate power-to-weight to drag-strip performance.
How accurate are these numbers?
They are estimates. Real times depend heavily on traction, gearing, aerodynamics, transmission, and driver skill, so treat them as a ballpark for comparing builds.
How is 0–60 estimated?
As roughly 55% of the quarter-mile ET. That ratio is a rough approximation rather than a published formula, and launch traction and gearing move real 0–60 times a lot, so treat it as the least reliable of the three figures.
Is my data stored?
No. Everything is computed locally in your browser.
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