Motor conversion tool
Horsepower and kW Converter
Enter horsepower or kW for motor schedules, nameplate review, and formula notes on one bidirectional page.
Convert Horsepower and kW
Enter horsepower or kW to convert motor mechanical power for nameplate review, then keep current, efficiency, PF, and nameplate checks in the motor tools.
Result
kW
7.46 kW
Result notes. Keep inputs, assumptions, and result together before using this value in project records.
Keep the entered values, assumptions, and result together when adding this calculation to job notes or submittal records. Final installation choices should align with the applicable code edition, equipment listing, manufacturer instructions, local amendments, and AHJ requirements.
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Motor Power
Open the motor power calculator to continue the workflow review.
Motor Current Calculator
Estimate formula running current from HP or kW, voltage, efficiency, and power factor, then compare against NEC table FLC when needed.
Motor Efficiency Calculator
Operating-point screen for measured efficiency, input power, losses, and annual energy comparison at one shaft load.
Motor Torque
Open the motor torque calculator to continue the workflow review.
Related charts
Motor Power HP kW Chart
Use a motor power HP kW chart to document horsepower, mechanical output, electrical input, kVA, kVAR, power factor, efficiency, and current context after the calculator result.
HP to Amps Chart
Use this HP to amps chart as an early motor-current screen; open the motor calculator for voltage, efficiency, PF, NEC FLC, and nameplate FLA.
Motor Efficiency Chart
Use a motor efficiency chart to document shaft output, input power, losses, load profile, operating hours, energy difference, cost difference, and payback after the calculator result.
Related guides
Motor Power Formulas Guide | HP, kW, Torque and Current
Use this motor power formulas guide to choose HP, kW, torque, speed, efficiency, power factor, voltage, and calculator inputs.
Electrical Power Formulas Guide | Calculator Workflow
Use this power formulas guide to choose DC, single-phase, three-phase, PF, kW, kVA, HP, current, voltage, and calculator inputs.
Related tools
Horsepower and Amps Calculator
Enter HP, voltage, phase, efficiency, and PF to estimate motor formula current before NEC FLC or nameplate FLA review.
kW and Amps Calculator
Enter kW or amps with voltage, phase, and power factor to convert AC load current while keeping the result tied to its electrical basis.
Formula and field context
Enter horsepower or kW for motor schedules, nameplate review, and formula notes on one bidirectional page.
Formula context
Motor Power HP kW Chart
A motor power HP kW chart is a calculator result record for separating mechanical output from electrical input. One horsepower is about 0.746 kW at the shaft, but feeder current and apparent power also depend on voltage, phase, efficiency, and power factor.
Formula
Mechanical kW = HP x 0.746. Three-phase input kW = 1.732 x V x A x PF / 1000.Variables to keep with the result
- HP is mechanical horsepower at the shaft or selected load basis.
- Mechanical output kW is the converted shaft power before losses.
- Electrical input kW is the real power drawn from the supply after efficiency and power factor are considered.
- V, A, phase, PF, and efficiency explain why the same HP motor can have different electrical input values.
Formula and meaning
One mechanical horsepower is approximately 0.746 kW. The reverse conversion divides kW by 0.746. This conversion is a power-unit reference for motor documentation, not a complete electrical input-current calculation.
Where it helps
Motor schedules, imported equipment, drives, and manufacturer literature often mix HP and kW. A bidirectional conversion keeps nameplate review simple when one document lists horsepower and another lists kilowatts.
When to escalate
Use the horsepower and amps calculator when voltage, phase, efficiency, and power factor matter. Use the full motor calculators when torque, slip, starting current, protection, or conductor sizing are part of the decision.