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kVA to VA Calculator

Convert kilovolt-amps (kVA) to volt-amps (VA) for UPS, transformer, and power supply sizing.

What this tool does

Convert kilovolt-amps (kVA) to volt-amps (VA) for UPS, transformer, and power supply sizing. Type an amount in kilovolt-amperes, choose the units, and the tool converts it to volt-amperes. It offers 5 apparent power units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Gigavolt-ampere, Megavolt-ampere, Kilovolt-ampere, Volt-ampere, Millivolt-ampere. Starts as Kilovolt-ampere.
  • To: Choose one of the same 5 units as "From". Starts as Volt-ampere.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from kilovolt-amperes to volt-amperes:

  • 1 kVA = 1,000 VA
  • 5 kVA = 5,000 VA
  • 10 kVA = 10,000 VA
  • 50 kVA = 50,000 VA
  • 100 kVA = 100,000 VA

Multiply the number of kilovolt-amperes by 1,000 to get volt-amperes. Both units are exact definitions, so 1,000 is the exact factor: 1 kVA = 1,000 VA.

Sources: Kilovolt-ampere: IEC 80000-6:2008, item 6-57. Volt-ampere: IEC 80000-6:2008, item 6-57.

Limitations

  • Converts apparent power between VA-based units only. It does not convert to watts, which needs a power factor.

FAQs

Q: How do I convert kVA to VA?
A: Enter the value, choose kVA as the From unit and VA as the To unit. The result and the other units in the list update immediately. To go the other way, swap the two units.
Q: How many volt-amps are in a kilovolt-amp?
A: One kVA is exactly 1,000 VA, because kilo means one thousand.
Q: Is kVA the same as kW?
A: No. kVA is apparent power and kW is real power. They differ by the power factor of the load, which this converter does not use.

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