kW Calculator

kW Calculator is an electrical power and conversion app for electricians, electrical engineers, technicians, students, maintenance professionals, contractors, and anyone who needs quick electrical calculations.

Calculate electrical power and convert between kW, amps, kVA, HP, kWh, watts, and BTU/hr. The app also includes a cable size calculator and an HP to kW to kVA calculator. All calculations work offline.

kW Calculator

Calculate electrical power for DC, single-phase AC, and three-phase AC systems. Enter voltage, current, power factor, and other required values to calculate electrical power and related values. The formula used is also shown with the result.

kW to Amps Calculator

Calculate current in amps from power in kilowatts. Select DC, single-phase AC, or three-phase AC and enter the required values. Reverse conversion from amps to kW is also supported. Power factor can be included for AC calculations.

kW to kVA Calculator

Convert kW to kVA using power factor, or calculate kW from kVA. Useful for generator, transformer, UPS, and electrical load calculations.

kW to HP Calculator

Convert kilowatts to horsepower and horsepower to kilowatts. Use it to compare motor ratings and electrical and mechanical power values.

kW to kWh Calculator

Calculate energy from power and operating time. Convert kW to kWh or use the reverse calculation to determine kW from kWh and time. Useful for energy consumption and equipment operating-hour calculations.

kW to Watts Calculator

Convert kW to watts and watts to kW quickly for electrical equipment ratings and power calculations.

kW to BTU/hr Calculator

Convert kW to BTU/hr and BTU/hr to kW. Useful for comparing electrical power with heating, cooling, and thermal capacity ratings.

kW to Cable Size Calculator

Estimate a preliminary cable size from electrical load and installation parameters. Enter power, voltage, phase, power factor, efficiency, cable material, cable length, installation conditions, and voltage drop where applicable.

Cable sizing cannot be determined from kW alone. Actual cable selection depends on current, conductor material, installation method, ambient temperature, cable length, voltage drop, correction factors, fault conditions, applicable standards, and manufacturer data. Always verify the final cable selection before installation.

HP to kW to kVA Calculator

Calculate the relationship between horsepower, mechanical kW, electrical input kW, and kVA. Enter horsepower, motor efficiency, and power factor to calculate the related values. This helps distinguish motor output power from electrical input power and apparent power.

Reverse Conversions

The app supports reverse calculations for many tools, including amps to kW, kVA to kW, HP to kW, kWh to kW, watts to kW, and BTU/hr to kW.

Key Features

kW calculator for DC, single-phase AC, and three-phase AC
kW to amps and amps to kW
kW to kVA and kVA to kW
kW to HP and HP to kW
kW to kWh and kWh to kW
kW to watts and watts to kW
kW to BTU/hr and BTU/hr to kW
kW to cable size
HP to kW to kVA
Power factor and efficiency calculations
Calculation formulas and clear results
Calculation history and favorites
Copy and share results
Light and dark themes
Offline calculations

Whether you need a kW calculator, kW to amps calculator, kW to kVA calculator, kW to HP calculator, kW to kWh calculator, kW to watts calculator, kW to BTU calculator, or a preliminary cable size calculation, kW Calculator provides essential electrical tools in one Android app.

Important Disclaimer

Calculations are provided for informational, educational, and preliminary engineering purposes. Results should be independently verified before use in electrical design, equipment selection, or installation. Cable sizing and electrical installations should be checked by a qualified professional using applicable regulations, standards, installation conditions, and manufacturer specifications.