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hp, PS and kW converterPower and torque, both ways

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.

Power

hp (bhp)PSkW

Nmlb-ftkgf·m

1 PS = 0.98632 hp · 1 kW = 1.34102 hp · 1 lb-ft = 1.35582 Nm · 1 kgf·m = 9.80665 Nm

hp and bhp are horsepower at the engine; UK tuners write bhp.
PS is metric horsepower, used by European and Japanese makers: 600 PS is about 592 hp. Mercedes rates the C63 S at 510 PS, about 503 hp.
kW is the official unit on European papers: 300 kW is about 402 hp.
kgf·m is the torque unit on many Korean spec sheets: 40 kgf·m is about 392 Nm or 289 lb-ft.

A figure measured at the wheels (whp) is a different thing, not a different unit: see the crank to wheel calculator and why tuners' numbers don't match.