Power Calculator & Generator Sizing Calculator

Our power calculator for generators helps you convert kVA to kW, kW to kVA, kW to HP. We provide these calculators as a tool to help you determine the size of generator required for your application. Other calculators on this page assist with unit conversions and other related calculations.

Not sure what you need? If our generator sizing calculator isn’t enough, our experts are happy to assist you. Contact us to learn more about our inventory.

Calculation Guide to Standard Uints
Power Calculator Kilo Volt Amperes kVA
Converting kVA to kW KiloWatts (1000 watts = 1 kW) kW
Converting kW to kVA Ampere (Volt-Amperes or Current) I
Converting kW to HP Volts E
Amperes when kVA is known Power Factor PE
kVA Required to run motors Percent Efficiency %EFF
Horse Power HP

Power Requirement Calculator
Phase Volts Required
V
Amperes
I
Power
Factor
= Power
kW
Evaluate

Converting kW to kVA
kW = kVA
Evaluate
Converting kVA to kW
kVA = kW
Evaluate

Converting kW to HP
kW = HP
Evaluate
What size genset is needed to start a 3 phase electric motor Direct on Line (DOL) start
HP of
Motor
= Generator
kVA Required
Evaluate

Calculating Amperes (when you know kVA)
Phase
1,2,3
Generator
kVA
Volts
Required
= Ampere
I
Evaluate