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Electrical Power Calculators

Guide to Standard Units
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 we recommend you confirm information by a certified electrician. These calculators should be used for general estimating only. These calculators do not take into consideration outside factors that need to be taken into consideration, such as altitude, motor efficiencies, or the like. Contact us for additional information.
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