🔌 Power Converters

Professional power conversion tools for all your power measurement needs. Convert between watts, horsepower, kilowatts, BTU/hr, and more power units instantly.

🔥 Most Popular Power Conversions

🔌 All Power Conversion Tools

Watt ↔ Kilowatt
Convert between watts and kilowatts - the most fundamental electrical power unit conversion.
SI Unit ↔ SI Unit | 1 kW = 1000 W
Watt ↔ Horsepower
Convert watts to horsepower for comparing electrical and mechanical power outputs.
SI Unit ↔ Imperial | 1 hp = 745.7 W
Watt ↔ BTU/hour
Convert watts to BTU per hour for HVAC systems and thermal power calculations.
Electrical ↔ Thermal | 1 W = 3.412 BTU/hr
Watt ↔ Megawatt
Convert watts to megawatts for large-scale power generation and grid calculations.
Small ↔ Large Scale | 1 MW = 1,000,000 W
Watt ↔ Milliwatt
Convert watts to milliwatts for electronics and low-power device specifications.
Standard ↔ Small | 1 W = 1000 mW
Kilowatt ↔ Horsepower
Convert kilowatts to horsepower for automotive and industrial motor power ratings.
Electrical ↔ Mechanical | 1 hp = 0.746 kW
Kilowatt ↔ BTU/hour
Convert kilowatts to BTU per hour for air conditioning and heating system ratings.
Electrical ↔ Thermal | 1 kW = 3412 BTU/hr
Kilowatt ↔ Megawatt
Convert kilowatts to megawatts for scaling between residential and industrial power levels.
Medium ↔ Large Scale | 1 MW = 1000 kW
Kilowatt ↔ Gigawatt
Convert kilowatts to gigawatts for power plant and national grid calculations.
Medium ↔ Grid Scale | 1 GW = 1,000,000 kW
Horsepower ↔ Watt
Convert horsepower to watts for comparing mechanical and electrical power specifications.
Mechanical ↔ Electrical | 1 hp = 745.7 W
Horsepower ↔ Kilowatt
Convert horsepower to kilowatts for engine specifications and motor ratings.
Mechanical ↔ Electrical | 1 hp = 0.746 kW
Horsepower ↔ BTU/hour
Convert horsepower to BTU per hour for thermal equivalents of mechanical power.
Mechanical ↔ Thermal | 1 hp = 2545 BTU/hr
Metric HP ↔ Horsepower
Convert between metric horsepower (PS) and imperial horsepower for international specifications.
Metric ↔ Imperial | 1 hp = 1.014 PS
BTU/hour ↔ Watt
Convert BTU per hour to watts for HVAC capacity and electrical equivalent calculations.
Thermal ↔ Electrical | 1 BTU/hr = 0.293 W
BTU/hour ↔ Kilowatt
Convert BTU per hour to kilowatts for air conditioning and heating system specifications.
Thermal ↔ Electrical | 1 BTU/hr = 0.000293 kW
BTU/hour ↔ Ton of Refrigeration
Convert BTU per hour to tons of refrigeration for cooling system capacity ratings.
Thermal ↔ Cooling | 1 TR = 12,000 BTU/hr
Megawatt ↔ Kilowatt
Convert megawatts to kilowatts for power plant output and large industrial systems.
Large ↔ Medium Scale | 1 MW = 1000 kW
Megawatt ↔ Gigawatt
Convert megawatts to gigawatts for utility-scale power generation and grid management.
Large ↔ Grid Scale | 1 GW = 1000 MW
Megawatt ↔ Horsepower
Convert megawatts to horsepower for large engine and turbine power comparisons.
Large Scale ↔ Mechanical | 1 MW = 1341 hp
Ton of Refrigeration ↔ Watt
Convert tons of refrigeration to watts for cooling system power consumption calculations.
Cooling ↔ Electrical | 1 TR = 3517 W
Calorie/second ↔ Watt
Convert calories per second to watts for metabolic and thermodynamic power calculations.
Thermal Rate ↔ SI Unit | 1 cal/s = 4.184 W
Foot-pound/second ↔ Watt
Convert foot-pounds per second to watts for mechanical power in imperial units.
Imperial Work ↔ SI Unit | 1 ft⋅lbf/s = 1.356 W
Boiler Horsepower ↔ Watt
Convert boiler horsepower to watts for steam generation and industrial heating systems.
Steam ↔ Electrical | 1 BHP = 9809.5 W
Watt-peak ↔ Watt
Convert watt-peak (solar panel rating) to actual watts under standard test conditions.
Solar Rating ↔ Actual | Under STC conditions
Volt-Ampere ↔ Watt
Convert volt-amperes (apparent power) to watts (real power) considering power factor.
Apparent ↔ Real Power | Depends on Power Factor
VAR ↔ Watt
Convert volt-amperes reactive to watts for AC power system analysis.
Reactive ↔ Real Power | AC Power Systems

📚 Power Units Quick Reference

Watt (W)
SI base power unit
Used in: Electronics, Electrical
1 W = 1 J/s = 1 Vâ‹…A
Horsepower (hp)
Mechanical power unit
Used in: Automotive, Industrial
1 hp = 745.7 W
Kilowatt (kW)
Large electrical power
Used in: Appliances, Small Motors
1 kW = 1000 W
BTU/hour
Thermal power rate
Used in: HVAC, Heating
1 W = 3.412 BTU/hr

All power conversion tools provide instant, accurate results for electrical, mechanical, and thermal power applications.