# Electrical Power Calculators

The following calculators are provided to help you determine the size of generator required for your specific application.  Other calculators on this page are for unit conversions and other power related calculations.

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

Power Requirement Calculator
 Phase Volts Required V Amperes I Power Factor = Power kW 1 3 .8 1.0

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

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

Calculating Amperes (when you know kVA)
 Phase 1,2,3 Generator kVA Volts Required = Ampere I
 * LEGAL DISCLAIMER: Whenever complex electrical calculations are involved, it is always wise to seek the assistance of a certified electrician. The calculators on this page are offered to assist in generating general estimations only.  In most instances, there are numerous additional factors that should be accounted for (such as altitude, site conditions, iron losses, motor efficiencies, etc.).  If you are still unsure or would like assistance analyzing your current situation, feel free to