Engine and Performance
Horsepower, engine displacement, torque, gear speed, braking distance and acceleration calculators
Horsepower to kW Calculator
Convert engine power between kilowatts, metric horsepower (PS) and mechanical horsepower (hp).
Braking Distance Calculator
Estimate reaction distance, braking distance and total stopping distance from speed, reaction time and road friction.
0-60 Calculator
Estimate 0-60 mph acceleration time from horsepower, curb weight and drivetrain using a simple power-to-weight model.
Engine Displacement Calculator
Calculate engine displacement from bore, stroke and cylinder count, with results in cc, liters and cubic inches.
Engine Torque Calculator
Calculate engine torque from horsepower and RPM, or convert torque between lb-ft, N-m and kgf-m.
Gear Ratio Speed Calculator
Calculate vehicle speed from engine RPM, gear ratios, final drive ratio and tire size, with mph and km/h results.