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Tuning toolsQuick answers before you tune

Four free calculators that work in your browser, built on the same verified figures as the guides.

Lowered black Toyota GR Supra A90
hp, PS and kW converter (plus Nm and lb-ft)Type into any box and the others update. US makers quote hp, European makers PS and kW, and Korean spec sheets often give torque in kgf·m. Crank to wheel horsepower calculatorTuners quote engine power or wheel power, and the gap between them is not fixed. Pick a loss, and see where real cars from our guides land. Compare two cars: tuning potential stage by stageChoose two cars and see how far each one goes. Every figure is the tuners' own claim from its guide, so watch the units: some are at the engine (hp) and some at the wheels (whp). 95 or 98 octane: what a tune really costs at the pumpOnly 95 and 98 are sold at Israeli filling stations, and most tuning files are written for 98. Put in your driving and today's prices to see the difference.