For single phase kVA calculations or conversions we need to know two of the three values of kVA, Volts and Amps. Calculations could be kVA from Amps and Volts, Amps from kVA and Volts or Volts from kVA and Amps. For three phase kVA calculations we also need... ...to know the Power Factor and kW values. There are a number of kVA formulas which maybe difficult to remember them all, in which case you may like to download our free kVA calculator app, see the details at the bottom of this page. kVA Single Phase Calculations
To convert kVA to Amps we use this formula (single phase) Amps = kVA x 1000 / Volts Example: If kVA = 4.6 and voltage = 230 then the calculation would be 4.6 x 1000 / 230 = 20 Amps
To convert Amps to kVA we use this formula (single phase) kVA = Amps x Volts / 1000 Example: If amps = 15 and volts = 120 the calculation would be 15 x 120 / 1000 = 1.8 kVA
To calculate the voltage from kVA there is this formula (single phase) Volts = kVA x 1000 / Amps Example: If kVA = 40 and amps = 10 then the calculation is 40 x 1000 x 10 = 4000 volts kVA Three Phase Calculations
Calculating Amps from kVA Three Phase Amps = kVA / Volts / 1.732 x 1000 Example: If kVA = 50 and volts= 400 then the calculation would be 50 / 400 / 1.732 * 1000 = 72.17 Amps
Calculating Three Phase kVA from Amps formula kVA = Amps x Volts x 1.732 / 1000 Example: So if Amps = 25 and volts = 400 then 25 x 400 x 1.732 / 1000 = 17.32 kVA
Calculating Three Phase Volts from kVA formula Volts = kVA / Amps / 1.732 x 1000 Example: So if kVA= 32 and amps = 63 then the calculation would be 32 / 63 / 1.732 x 100 = 293 Amps kVA to kW to Power Factor FormulaTo calculate to or from kVA, kW or Power Factor (PF) we have the following calculations kVA = kW / Power Factor Example: If kW = 5 and Power Factor = 0.8 then 5 / 0.8 = 6.25 kVA kW = kVA x Power Factor Example: If kVA = 14 and Power Factor = 0.7 then 14 x 0.7 = 9.8 kW PF = kW / kVA Example: If kW = 15 and kVA = 25 then 15 / 25 = 0.6 Power Factor Get the kVA Calculator App.The kVA Calculator app has all the formulas already programmed in, let the app do the math! Android + iOS
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November 2019
