VA to Amps Calculator | PES Supply
VA to Amps Calculator
Convert volt-amps (VA) to amps. Enter VA and voltage to calculate current for UPS systems, inverters, and transformers.
Formula
VA to Amps Conversion Table
| VA | 120V | 240V | 480V |
|---|---|---|---|
| 500 VA | 4.17A | 2.08A | 1.04A |
| 1,000 VA | 8.33A | 4.17A | 2.08A |
| 3,000 VA | 25.00A | 12.50A | 6.25A |
| 5,000 VA | 41.67A | 20.83A | 10.42A |
| 10,000 VA | 83.33A | 41.67A | 20.83A |
Inverter & UPS Applications
- Size UPS systems for critical loads
- Determine inverter current capacity
- Calculate transformer current ratings
- Size circuit breakers for VA-rated equipment
What is the difference between VA and watts?
VA (volt-amps) measures apparent power, while watts measure real power. The ratio is the power factor (PF): Watts = VA x PF. For resistive loads PF=1, for inductive loads PF<1.
How do I convert VA to amps?
Divide VA by voltage: Amps = VA / Volts. For example, 3000VA at 120V = 25A.