0-100 km/h Calculator

How Does the Formula Work?

The 0-100 km/h calculator estimates acceleration time using the power-to-weight ratio and drivetrain type. It also calculates the quarter mile time (Huntington formula), average and peak G-forces, and compares your car against famous benchmarks from supercars to economy cars.

Power-to-Weight Ratio

The single most important factor in acceleration is the ratio of power to weight. A 300 hp car weighing 1500 kg has 200 hp/ton. A 150 hp car weighing 1000 kg has the same ratio — and similar acceleration. The calculator shows both hp/ton and kg/hp so you can compare with manufacturer specs.

Drivetrain Effect

AWD distributes power to all four wheels, maximizing traction off the line — especially important for high-power cars. RWD can spin the rear tires under hard acceleration, losing traction. FWD pulls from the front, offering decent traction but limited by weight transfer under acceleration. The difference narrows at higher speeds where aero and gearing matter more than traction.

Quarter Mile

The quarter mile (402 meters) is the standard drag racing distance. The Huntington formula estimates elapsed time using weight and power. Trap speed (speed at the end of the quarter) indicates the car's overall power — two cars with similar ET but different trap speeds have very different power characteristics.

Factors Affecting Acceleration

The weight-to-power ratio is the single most important factor in acceleration performance, but several other variables play significant roles. Tire grip determines how effectively power reaches the road — all-wheel drive systems can transfer more power without wheel spin, which is why AWD vehicles in the calculator get a 5% acceleration bonus. Transmission type matters too: dual-clutch automatics shift faster than manuals, and modern launch control systems optimize both engine RPM and clutch engagement for the best possible launch. Altitude affects naturally aspirated engines more than turbocharged ones because thinner air reduces combustion efficiency.

Quarter Mile and G-Force

The calculator also estimates quarter mile time using the Huntington formula, a well-established empirical correlation between 0-100 performance and quarter mile elapsed time. G-force during acceleration shows the physical force you experience — a 3-second 0-100 time produces roughly 0.94g of sustained force, similar to the peak force on a moderate roller coaster. Understanding these forces helps explain why performance cars need sport seats with strong lateral support and why unsecured objects slide during hard acceleration.

Benchmark Comparison

The calculator includes 8 benchmark vehicles spanning the full performance spectrum: from economy cars (12+ seconds) through sports cars (4-5 seconds) to hypercars (under 2.5 seconds). Comparing your car's estimated time against these benchmarks helps you understand where your vehicle stands in the performance hierarchy. Electric vehicles have transformed acceleration expectations — a Tesla Model S can match or beat most supercars to 100 km/h despite costing a fraction of the price.