This 0-60 mph calculator estimates how quickly a car accelerates from a standstill to 60 mph using its horsepower and weight. It's a quick way to predict acceleration for a build or mod, compare two cars, or sanity-check a manufacturer's published 0-60 time — though real launches depend heavily on traction and drivetrain.
0-60 MPH Formula
0-60 mph (or 0-100 km/h) is the most widely quoted acceleration benchmark for road cars. It's driven by power-to-weight ratio: more horsepower per pound means quicker acceleration. But unlike a steady-state top-speed number, 0-60 is dominated by what happens in the first second — how well the tires hook up and how fast the driver or launch control can put power down without wheelspin.
Why Traction and Drivetrain Decide the Real Number
This is an estimate based purely on power and weight, so it can't see the single biggest variable: grip. All-wheel-drive cars launch hard because all four tires share the load, so they come closest to the formula's best-case figure — and high-powered AWD cars and EVs on sticky tires can match or beat it. Front-wheel-drive cars suffer wheelspin and weight transfer off the nose, so they typically run well slower than predicted. Rear-wheel-drive sits in between and is highly sensitive to tire compound and launch technique. Turbo lag, gearing, and whether 60 mph falls in first or second gear all shift the result too.
0-60 and Power-to-Weight Ratio
The formula is really a power-to-weight curve: it only cares about pounds per horsepower. Treat its answer as a best case — a clean launch on a dry, grippy surface. Road cars on street tires commonly run a few tenths to around a second slower, and the gap is widest for front-wheel-drive cars and anything that struggles to put its power down. The relationship also breaks down at the extremes, where tire grip — not power — becomes the limiting factor. Use our power-to-weight ratio calculator to see where your car lands.
0-60 Times by Power-to-Weight
| Power-to-Weight | Weight per HP | Formula 0-60 (ideal launch) | Category |
|---|---|---|---|
| 0.050 hp/lb | 20 lb/hp | 7.3 s | Economy car |
| 0.075 hp/lb | 13.3 lb/hp | 5.4 s | Hot hatch |
| 0.100 hp/lb | 10 lb/hp | 4.4 s | Sports sedan |
| 0.150 hp/lb | 6.7 lb/hp | 3.3 s | Performance / muscle |
| 0.200 hp/lb | 5 lb/hp | 2.7 s | Supercar (with grip) |
These are the calculator's own figures, so they assume the launch is perfect. Expect real street-tire results to land somewhat slower, especially in the top two rows, where traction rather than power sets the limit (see below).
Why Doubling Power Doesn't Halve the Time
Because the weight-to-power ratio is raised to the power 0.714, time falls more slowly than power rises. Doubling power multiplies the 0-60 time by 2−0.714 ≈ 0.61 — about 39% quicker, not 50%.
| Change | Effect on 0-60 time | On a 6.0 s car |
|---|---|---|
| +10% power | −6.6% | 5.6 s |
| −10% weight | −7.2% | 5.6 s |
| +25% power | −14.7% | 5.1 s |
| +50% power | −25.1% | 4.5 s |
| +100% power | −39.0% | 3.7 s |
Weight loss is slightly more effective than the same percentage of extra power, because removing 10% of the mass is equivalent to adding 11% more power per pound — and it also improves braking and cornering.
The Traction Ceiling: Why Grip Sets a Hard Floor
No matter how much power a car has, it can't accelerate harder than its tires allow. The driven tires can push with at most the friction coefficient (μ) times the weight resting on them, so the quickest possible 0-60 time is roughly:
| Layout | Weight on driven wheels (during launch) | Floor at μ = 1.0 (good street tire) |
|---|---|---|
| All-wheel drive | ~100% | ≈ 2.7 s |
| Rear-wheel drive | ~65% (weight shifts rearward) | ≈ 4.2 s |
| Front-wheel drive | ~55% (weight shifts off the nose) | ≈ 5.0 s |
This is why the formula and reality part company at the top of the table. A 0.200 hp/lb rear-drive car has the power for a 2.7-second run but not the grip — on street tires it simply spins. Stickier tires (μ of 1.2–1.4 on a prepared surface) lower every floor, which is how the quickest AWD cars and EVs get under three seconds. The share-of-weight figures are typical values for illustration; your car's exact balance moves the numbers.
0-60 mph vs 0-100 km/h, and the "Rollout" Question
100 km/h is 62.1 mph, so a 0–100 km/h figure is always a little slower than the same car's 0-60 mph time — usually by one to three tenths. Don't compare a European 0–100 figure directly with an American 0-60.
Many US magazines also subtract a one-foot rollout from their 0-60 times, mirroring how a drag-strip timer starts only after the car has moved about a foot. That trims a couple of tenths compared with a timer started at the first movement. Figures from different publications can differ for this reason alone.
Worked Example
This calculator provides estimates based on standard mathematical formulas. Real-world results will vary based on mechanical condition, environmental factors, and other variables.
Acceleration and top speed are separate problems — acceleration follows power-to-weight, while top speed is set by aerodynamic drag. The kW to km/h calculator covers the second one.
For worked 0-60 and quarter-mile estimates from 150 to 700 hp, see is 300 horsepower fast?
Frequently Asked Questions
Traction is the main limiting factor. If your tires spin, your 0-60 time will increase dramatically.
Electric vehicles deliver maximum torque instantly at 0 RPM, unlike gas engines which must rev up. They also have highly advanced traction control.
They're rough guides. Real 0-60 times depend heavily on traction, gearing, transmission type, and launch technique, which a power-and-weight formula can't fully capture.
Weight, drivetrain layout, tire grip, and gearing all differ. An AWD car often launches harder than a RWD car of equal power because it puts more power down without wheelspin.
It's the best single predictor, but traction sets the ceiling. Below a certain weight or above a certain power level, grip — not power — limits acceleration.