Power Calculator

Determine the size of diesel generator required for your specific application*

The following calculators are provided as a basic guide to help you determine the size of diesel generator required for your specific application. Please contact us if you need any assistance.

Power Requirement Calculator

Phase Volts Required (V) Amperes (I) Power Factor
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 ofMotor = Generator kVA Required

Calculating Amperes (when you know kVA)

Phase 1,2,3 Generator kVA Volts Required

* LEGAL DISCLAIMER: The calculators on this page are offered to assist in generating general estimations only, for basic applications. If you are unsure or would like assistance analysing your current situation, feel free to contact us with your questions. Please note diesel generator sizing for most applications can be quite complex, with many variables which effect generator sizing. Please contact us for professional advice from one of our engineers.

As a guide some of the factors that need to be considered are:

  • Altitude
  • Ambient Temperature
  • Power Factor
  • Voltage DIP
  • Motor Start
  • Starting Method (Direct on Line, Soft Start, Star Delta, etc...)
  • Non Linear Loads (Harmonic Distortion) - Soft Start, UPS, VFD, etc...
Guide to Standard Units
Kilo Volt Amperes kVA
KiloWatts (1000 watts = 1kW) kW
Ampere (Volt-Amperes or Current) I
Volts E
Power Factor PE
Percent Efficiency %EFF
Horse Power HP