0 to 60 Calculator
Estimate how fast your car goes from 0 to 60 mph from its weight and horsepower, or enter a time you measured to see the average acceleration. Results are also shown for 0 to 100 km/h.
Estimated 0 to 60 mph
5.5 s
Check the highlighted fields to see your result.
- 0 to 100 km/h
- 5.8 s
- Average acceleration
- 4.9 m/s²
- In g
- 0.49 g
- Weight per hp
- 11.3
Results are estimates for information only and do not constitute financial, medical, or legal advice.
How it works
More power and less weight mean quicker acceleration. For the estimate, the calculator uses a rule of thumb fitted to everyday cars: the time grows with the weight carried by each horsepower, a little slower than in a straight line. For a measured time, the average acceleration is simply the speed reached divided by the time it took.
It is an estimate. Drivetrain losses, traction, tires, gear ratios, and how you launch the car all change the real number, so use it to compare cars, not as a promise.
The formulas
Time (0–60 mph) ≈ 0.755 × (weight in lb ÷ hp)0.82
Average acceleration = speed ÷ time
Worked example
A car that weighs 3,400 lb and makes 300 hp.
- Weight per horsepower: 3,400 ÷ 300 = 11.33 lb/hp.
- Time: 0.755 × 11.330.82 = 0.755 × 7.32 = 5.5 seconds from 0 to 60 mph.
- Average acceleration: 60 mph is 26.8 m/s, so 26.8 ÷ 5.5 = 4.9 m/s², about 0.49 g.
Frequently asked questions
How accurate is the estimated 0 to 60 time?
It is a rule-of-thumb estimate based on weight and power, and it works best for ordinary cars with a conventional engine. Traction, the gearbox, tires, launch technique, altitude, and the weather can change the real time by a second or more. Electric cars and all-wheel-drive cars are often quicker than the estimate.
What is a good 0 to 60 mph time?
Most everyday cars take 7 to 10 seconds. Under 6 seconds is quick, under 4 seconds is supercar territory. The number matters less for daily driving than how the car feels when merging or passing.
Why is 0 to 100 km/h a little slower than 0 to 60 mph?
100 km/h is about 62.1 mph, so the car has to go slightly faster. The calculator adds about 5% to the 0 to 60 mph time to get the 0 to 100 km/h time; many cars lose a bit more at higher speed because of air resistance.