What is the formula for 0-60 mph?

Three formulas are commonly used. Wallace-style (square root): t = 1.485 × √(W ÷ HP). Hale (scaled from quarter-mile): t = 5.825 × ∛(W ÷ HP) × 0.485. Fox (scaled from quarter-mile, real-world corrected): t = 6.269 × ∛(W ÷ HP) × 0.485. Use wheel HP, not flywheel HP — or let this calculator subtract drivetrain losses for you.

What's a good 0-60 time?

Under 3 seconds is hypercar territory (Bugatti, Tesla Plaid, Top Fuel dragsters). 3–5 seconds is supercar / serious sport car (911 GT3, M3 Competition, AMG GT). 5–7 seconds is hot-hatch / performance daily (GTI, WRX, base Mustang). 7–9 seconds is a typical modern sedan. 9–12 seconds is economy or base trim. Over 12 seconds usually means a heavy or low-power vehicle.

How much HP do I need for a 5-second 0-60?

Using the Wallace-style formula: HP = W × (1.485 ÷ t)². For a 5-second 0-60 in a 3,400 lb car, that's HP = 3,400 × (1.485 ÷ 5)² ≈ 300 wheel HP, or about 350 crank HP through a manual transmission. Switch to Find Required HP mode and enter your target time — the calculator returns both the wheel and crank power needed for any 0-60 target, with all three formulas compared.

How is G-force from 0-60 calculated?

Average G-force during a 0-60 run is the change in velocity divided by the time and gravitational acceleration: g = 26.82 ÷ (t × 9.80665), where 26.82 m/s is 60 mph in metric. A 3-second 0-60 averages ~0.91 g — roughly equivalent to a fighter jet takeoff. A 6-second 0-60 averages ~0.46 g. Peak G-force at launch is typically 1.3-1.8× the average, limited mostly by tire grip.

0-60 Calculator

Vehicle Weight (lbs)

Include driver weight (~170 lbs / 77 kg)

Engine Power (hp)

Power Measurement

Formula

All three formulas are shown in the comparison table

Estimated 0-60 mph Time

5.00sec

Using 300 whp at the wheels

Performance Breakdown

Sports Car / Tuned

Avg G-Force

0.55g

Weight / Power

11.3lb/hp

Distance to 60

220ft

Est. 1/4 Mile ET

13.08sec

Formula Comparison

Side-by-side 0-60 results from all three equations

Formula	0-60 Time (sec)
Wallace ✓	5.00
Hale	6.35
Fox	6.83

Wallace is the most-cited 0-60 formula. Hale and Fox are quarter-mile equations scaled to 0-60 by the empirical 0.485 ratio.

What Is the 0-60 Calculator?

Estimate 0 to 60 mph time from horsepower and weight

The 0-60 calculator estimates how long a vehicle takes to accelerate from a standing start to 60 mph (97 km/h). 0 to 60 is the most universally recognized acceleration benchmark — manufacturers, magazines, and enthusiasts all use it to compare cars, motorcycles, and EVs.

This tool combines three industry-standard formulas, drivetrain efficiency correction, and a built-in quarter-mile cross-conversion so you get a more honest answer than single-formula calculators.

Estimate 0-60 Time

Enter weight and horsepower to predict 0-60 mph time, average G-force, distance covered, and an estimated quarter-mile ET.

Find Required HP

Enter your weight and a target 0-60 time to find out exactly how much wheel and crank horsepower you need.

1/4 Mile → 0-60

Convert a known quarter-mile ET into an estimated 0-60 time using the empirical 0.485 ratio.

0-60 Formulas Explained

Three industry-standard equations with different assumptions

The Wallace formula is the de-facto standard for 0-60 mph estimation. The Hale and Fox formulas were originally designed for quarter-mile times — this calculator scales them to 0-60 using the empirical 0.485 ratio that holds across most modern street and sport cars.

Wallace

Industry Standard

t = 1.485 × √(W ÷ HP)

Square-root formula calibrated against real-world drag-strip data. Gives reliable 0-60 estimates for street and sport cars in the 3-8 second range using wheel horsepower.

Hale (scaled)

Theoretical

t = 5.825 × ∛(W ÷ HP) × 0.485

Patrick Hale's quarter-mile formula scaled by an empirical 0.485 ratio. Gives an optimistic estimate that assumes ideal traction and minimal drivetrain loss.

Fox (scaled)

Real-World

t = 6.269 × ∛(W ÷ HP) × 0.485

Geoffrey Fox's quarter-mile formula scaled by 0.485. More conservative — typical drivetrain friction and aerodynamic drag are reflected in the constant.

0-60 to Quarter-Mile Relationship

0-60 time ≈ Quarter-mile ET × 0.485

An empirical ratio derived from drag-strip data across hundreds of street and sport cars. Use the Quarter Mile Calculator for the reverse direction.

Wheel HP vs Flywheel HP

The single biggest source of error in DIY 0-60 calculations

Manufacturers publish flywheel (or crank) horsepower — the power the engine produces before any drivetrain losses. By the time that power reaches the wheels, you've lost 5–25% of it to friction in the transmission, driveshaft, differential, and axles.

Manual

~15%

Typical loss for a healthy manual transmission with a stock clutch.

Automatic

~22%

Torque-converter automatics consume more power, especially before lockup.

Direct / EV

~5%

Single-speed direct-drive (most EVs) loses very little to drivetrain friction.

If you're using a manufacturer's HP figure, set Power Measurement to Flywheel and pick your drivetrain so the calculator applies the loss for you.

Why Real-World 0-60 Times Vary

What the formula can't see

Traction & Launch

Tire grip, AWD vs RWD, and launch technique are responsible for nearly all of the variance below 5 seconds. AWD cars consistently beat the formula's prediction; RWD cars often miss it.

Drivetrain Losses

This calculator uses ~15% loss for manuals, ~22% for automatics, and ~5% for direct-drive EVs. Actual loss varies by transmission type, gear ratios, and condition.

Vehicle Weight

Weight includes the car, driver, fuel, and any cargo. On a 3,400 lb car running 0-60 in 5 seconds, removing 100 lbs is worth roughly 0.05 seconds — small but measurable.

Power Curve Shape

Two engines with the same peak HP can produce different 0-60 times if one makes power earlier in the rev range. The formulas assume constant power, which favors broad-torque engines.

Shift Speed & Gearing

Most cars hit 60 mph in second gear. Cars that need a 1-2 shift to reach 60 lose ~0.2-0.3s versus those that don't. EVs avoid this entirely with single-speed transmissions.

Rolling vs Standing Start

Some manufacturers quote 0-60 with a 1-foot rollout (drag-strip convention), shaving 0.2–0.3s off the standing-start time. This calculator estimates true standing-start figures.

Frequently Asked Questions

Common questions about 0-60 mph times and acceleration

The most popular shortcut is a square-root formula: t = 1.485 × √(Weight ÷ HP), where weight is in pounds and HP is wheel horsepower. For example, a 3,400 lb car with 300 wheel HP: t = 1.485 × √(3,400 ÷ 300) = 1.485 × 3.367 ≈ 5.0 seconds — close to a real-world Mustang GT. Cube-root formulas like Hale and Fox (scaled from quarter-mile equations by 0.485) give a similar answer with slightly different assumptions about drivetrain loss and aerodynamic drag.

Multiply the quarter-mile elapsed time (ET) by approximately 0.485. For example, a 13-second quarter-mile ET converts to roughly 0-60 in 6.3 seconds. The 0.485 multiplier is empirically derived from drag-strip data across hundreds of street and sport cars. It works best for cars in the 11–16 second ET range; very fast cars (sub-10s) tend to have a slightly lower ratio because they spend more of the quarter at high speed.

Drivetrain affects 0-60 in two ways. First, it determines how much engine power reaches the wheels: manual transmissions lose ~15%, automatics ~22%, and direct-drive EVs only ~5%. Second, the layout (FWD/RWD/AWD) affects launch traction. AWD cars consistently beat formula predictions below 5 seconds because they can put more power down off the line; powerful RWD cars often miss the predicted time due to wheelspin. Set Power Measurement to Flywheel and pick your transmission to apply drivetrain losses automatically.

Flywheel (or crank) horsepower is the engine output measured at the crankshaft, before any drivetrain losses. This is the figure manufacturers publish. Wheel horsepower (WHP) is what's left after the transmission, driveshaft, differential, and axles take their share — typically 15-22% less. For accurate 0-60 estimates, use wheel HP if you have a dyno number; if you only have the manufacturer's spec, choose Flywheel and let the calculator subtract the loss for you.

Different calculators use different formulas, different drivetrain-loss assumptions, and different rounding. Some use Wallace's square-root formula; others scale from quarter-mile cube-root formulas; some quote rolling-start (drag-strip) times that shave 0.2-0.3s off standing-start figures. This calculator shows results from three formulas side-by-side so you can see the spread instead of trusting a single number.

Yes, with caveats. Motorcycles: use the Direct Drive option (~5% loss) since chain drives are very efficient — but the formulas tend to over-predict because bikes are launch-traction limited at this power-to-weight ratio. Real motorcycle 0-60 times are usually 0.3-0.5s slower than predicted. EVs: pick Direct Drive (single-speed gearbox) and use the manufacturer's HP figure as Flywheel. Mid-power EVs that aren't traction-limited (Bolt, Leaf, base Model 3) tend to match the formula reasonably well, but launch-optimized AWD EVs like the Tesla Plaid, Lucid Air, or Porsche Taycan Turbo S can beat the formula by 1+ seconds — these cars are limited by tire grip, not power-to-weight, and use launch-control software the simple model doesn't capture.

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Last updated May 1, 2026