# Volt-ampere Calculator

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Last Updated on January 18, 2022 by Krunal Shah (Mod)

This calculator is useful to you to find out kilo volt-ampere of any equipment. You can find kVA of single phase and three phase equipments.

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### How to use the calculator?

• From the drop down, select the phase.
• For this calculator, note down the voltage, rated current. You can find details from the equipment’s nameplate.
• Enter the data collected in respective fields.
• The calculator would show automatically the calculated value.

### How to calculate kilo volts-ampere of equipments?

#### Single Phase

For single phase, kilo volt-ampere (kVA) is equal to rated voltage (V) multiply by current. Divide that result by thousand to get the final result in kilo volt-ampere.

Example: Let us say you have 230 VAC equipment and current is 100 amps. The calculated kilo volt-ampere is 23 kVA.

#### Three Phase

For three phase, kilo volt-ampere (kVA) is equal to square-root of three multiply by rated voltage (V) multiply by rated current (I) whole divided by thousand.

Example: Let us say you have transformer at LV side voltage is 415 VAC and rated current 2000. For this transformer, the calculated kVA is 1435.9 kVA.

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Krunal Shah is Electrical and Electronics Engineer with almost 12 years of experience in corporate in relevant field before starting Engineers Hub. He loves to share his experience and knowledge and that makes him a passionate educator and career-counselor also. Along with Engineers Hub he also runs Subodh Tech Private Limited where he is involved in providing job-oriented training and Engineering Consultancy.