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VolumeCalculator.Co - Free online calculator tool for finding the volume of various 3D shapes with step-by-step solutions and comprehensive unit conversion.

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Power Converter

Convert between various power units instantly. From watts to horsepower, kilowatts to BTU per hour - all with precision and accuracy.

Horsepower ↔ Watts

Formula: W = HP ÷ 0.00134102

Formula: HP = W × 0.00134102

kW ↔ BTU/hr

Formula: BTU/hr = kW ÷ 0.293071

Formula: kW = BTU/hr × 0.293071

BTU/hr ↔ Watts

Formula: W = BTU/hr ÷ 3.41214

Formula: BTU/hr = W × 3.41214

HP ↔ kW

Formula: kW = HP ÷ 1.34102

Formula: HP = kW × 1.34102

kW ↔ Watts

Formula: W = kW × 1,000

Formula: kW = W ÷ 1,000

HP ↔ BTU/hr

Formula: BTU/hr = HP × 2,544.43

Formula: HP = BTU/hr ÷ 2,544.43

About Power Conversion

Power conversion is essential in automotive, electrical engineering, HVAC, and mechanical systems. Understanding different power units helps in comparing engine specifications, electrical consumption, and heating/cooling capacities.

Common Power Units

  • Watt (W): SI unit of power (1 W = 1 J/s)
  • Kilowatt (kW): 1,000 watts
  • Horsepower (HP): Mechanical power unit (745.7 watts)
  • BTU per Hour: British Thermal Units per hour (HVAC standard)

Conversion Factors

  • 1 horsepower (HP) = 745.7 watts = 0.7457 kW
  • 1 kilowatt (kW) = 1,000 watts = 1.341 HP
  • 1 watt = 3.41214 BTU/hr
  • 1 BTU/hr = 0.293071 watts
  • 1 HP = 2,544.43 BTU/hr

Applications

  • Automotive: Engine power (HP), electric vehicle motors (kW)
  • Electrical: Appliance consumption, electrical systems (W, kW)
  • HVAC: Air conditioner and heater capacity (BTU/hr, tons)
  • Industrial: Motor specifications, machinery power ratings
  • Renewable Energy: Solar panel output, wind turbine capacity (kW)
  • Electronics: Power supply ratings, device consumption

Mechanical vs Electrical HP

There are different definitions of horsepower:

  • • Mechanical HP: 745.7 W (US/Imperial, most common)
  • • Metric HP: 735.5 W (PS, cv, used in Europe)
  • • Electrical HP: 746 W (exactly, for motors)

This converter uses mechanical horsepower (745.7 W).