Convert between kW, hp, bhp, W, MW, and BTU/hr — engine specs, solar sizing, and HVAC math in one place. Size solar arrays and compare engine outputs correctly — free, local, no signup.
Content reviewed October 2026 · About Toolzum
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Kilowatts (kW), horsepower (hp and bhp), watts (W), megawatts (MW), and BTU per hour (BTU/hr). All conversions are bidirectional.
Horsepower (hp) is mechanical power. Brake horsepower (bhp) is the power at the engine's output shaft before drivetrain losses. bhp is slightly lower than hp in most contexts.
BTU/hr is used for HVAC systems, heaters, and cooling units. Converting kW to BTU/hr helps size heating/cooling equipment for rooms and buildings.
Yes. The converter uses standard SI conversion factors: 1 kW = 1.341 hp, 1 hp = 745.7 W, 1 kW = 3412 BTU/hr.
Yes. All conversions run in your browser. No data is transmitted.