Should I use crank or wheel horsepower?

Use manufacturer-rated crank horsepower for the most accurate estimate.

Why do electric cars beat the estimate?

EVs deliver peak torque from 0 RPM and benefit from precise traction control.

How much does adding 100 HP change 0-60?

It depends on starting power — the relationship is not linear with diminishing returns at higher power.

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0-60 Calculator

Estimate 0-60 mph acceleration time from horsepower and vehicle weight. Compare with known production vehicles.

Quick Answer

A vehicle’s 0-60 time depends primarily on its power-to-weight ratio. A car with 300 HP and 3,500 lbs has a ratio of 11.7 lbs/hp, estimating around 5.5 seconds to 60 mph. Lower ratios mean faster acceleration.

Vehicle Specs

Horsepower (HP)

Curb Weight (lbs)

Presets:

Results

6.0s

Est. 0-60 mph

11.7

lbs/HP Ratio

14.1s

Est. 1/4 Mile

200

Est. Top Speed (mph)

Similar Vehicles

Tesla Model 3 LR

346 HP / 4048 lbs4.2s

Honda Civic Si

200 HP / 2952 lbs6.5s

BMW M3

473 HP / 3840 lbs3.8s

About This Tool

The 0-60 Calculator estimates a vehicle’s acceleration time from a standstill to 60 miles per hour based on its horsepower and curb weight. This is the most commonly cited performance metric for production cars in North America. The tool uses an empirical formula based on the power-to-weight ratio, which is the single most important factor in straight-line acceleration.

Power-to-Weight Ratio Explained

The power-to-weight ratio, expressed as pounds per horsepower, tells you how much weight each unit of power has to move. A lower number means faster acceleration. A supercar with 600 HP and 3,000 lbs has a ratio of 5.0 lbs/hp and will reach 60 mph in under 3 seconds. A family sedan with 200 HP and 3,500 lbs has a ratio of 17.5 lbs/hp and takes closer to 8 seconds. This ratio is more useful for comparing vehicles than raw horsepower alone.

Factors Beyond HP and Weight

Real-world 0-60 times depend on many additional factors: drivetrain type (AWD launches better than RWD), transmission (dual-clutch automatics shift faster than manuals), tire grip, torque curve shape, launch control systems, and traction. Electric vehicles often beat their power-to-weight estimates because they deliver maximum torque instantly from zero RPM. This calculator provides estimates that are typically within 0.5-1.0 seconds of tested times for conventional vehicles.

Quarter Mile Estimation

The quarter-mile time is roughly 2.3-2.5 times the 0-60 time for most vehicles. This relationship breaks down for very fast cars where aerodynamic drag becomes the limiting factor, and for electric cars that may have limited top-end power. Still, the quarter-mile estimate gives you a reasonable ballpark for drag strip performance without needing a full simulation.

Frequently Asked Questions

How accurate is this 0-60 estimate?

The estimate is typically within 0.5-1.0 seconds of real-world tested times for conventional gas-powered vehicles. Electric vehicles, AWD launch systems, and exceptionally high-grip tires can produce faster times than the estimate suggests. The formula works best for naturally aspirated or turbocharged gas/diesel vehicles.

Should I use crank horsepower or wheel horsepower?

Use the manufacturer's rated horsepower, which is measured at the crankshaft. Wheel horsepower is typically 15-20% lower due to drivetrain losses. Since the empirical formula is calibrated against manufacturer-rated figures and tested 0-60 times, crank HP gives the most accurate estimate.

Why do electric cars often beat the estimated time?

Electric motors deliver peak torque from 0 RPM, providing maximum acceleration right from launch. Gas engines need to reach a certain RPM range for peak power. EVs also benefit from precise traction control and single-speed transmissions that eliminate shift time. The estimate formula is based on gas vehicle data.

Does curb weight include the driver?

Curb weight is the vehicle's weight without passengers or cargo but with all fluids (fuel, oil, coolant). Adding a 180-pound driver to a 3,500-pound car changes the ratio from 11.67 to 12.27 lbs/hp, which adds roughly 0.3 seconds to the 0-60 time. Most manufacturer tests include a driver.

How much does adding 100 HP change the 0-60 time?

The effect depends on the starting power level. Adding 100 HP to a 200 HP car cuts 0-60 time dramatically (perhaps 2-3 seconds). Adding 100 HP to a 500 HP car might only save 0.5 seconds. The relationship between power and acceleration is not linear — you get diminishing returns at higher power levels.