Motor Kilowatt (kW) Calculator
Calculate motor power in kilowatts for various applications
Motor kW Calculator
Compliant with IEC 60034 Standards
Results:
Watts (W): 0.00
Kilowatts (kW): 0.00
Megawatts (MW): 0.00
How to Use the Calculator
AC Single Phase Motor
- Select "AC Motor" type
- Choose "Single Phase"
- Enter line-to-neutral voltage
- Provide current in amps
- Input power factor (0-1)
- Enter motor efficiency (%)
AC Three Phase Motor
- Select "AC Motor" type
- Choose "Three Phase"
- Enter line-to-line voltage
- Provide current in amps
- Input power factor (0-1)
- Enter motor efficiency (%)
DC Motor Systems
- Select "DC Motor" type
- Enter voltage
- Provide current in amps
- Power factor is automatically set to 1
- Enter motor efficiency (%)
Motor Power Fundamentals
AC Motor Power
For AC motors, power calculations consider:
- Phase configuration (Single/Three)
- Power factor (cosφ)
- Voltage type (Line-to-Line/Line-to-Neutral)
- Motor Efficiency (η)
DC Motor Power
- No phase or power factor considerations
- Simple V × I calculation, adjusted by efficiency
- Direct power conversion
Key Formulas:
Single Phase AC Motor: kW = (V × I × PF × η) / 1000
Three Phase AC Motor: kW = (√3 × V × I × PF × η) / 1000
DC Motor: kW = (V × I × η) / 1000
Calculation Formulas
AC Single Phase Motor:
kW = (V × I × PF × η) / 1000
AC Three Phase Motor:
kW = (√3 × V × I × PF × η) / 1000
DC Motor:
kW = (V × I × η) / 1000
Example Calculation
Three Phase AC Motor:
Voltage: 400V
Amps: 10A
PF: 0.85
Efficiency: 90% (0.9)
W = √3 × 400V × 10A × 0.85 × 0.9 = 5290.74W
kW = 5290.74 / 1000 = 5.29kW
Watts = 5290.74W | kW = 5.29 kW | MW = 0.0053 MW
Related Power Calculators
Motor kW to Resistance Calculator
Determine motor resistance from kilowatt power and other parameters.
Try Calculator