Transformer Sizing Calculator: Find the Right VA Rating | Wilmall
Enter your load
Tell us the appliance and we recommend the right transformer.
Enter appliance wattage and press Calculate to see the recommended transformer.
Simple x1.3
Heater / audio x1.5
Compressor x3
Motor x3
Required VA = appliance watts × safety margin. We then match the result to the nearest stock model in our range.
Not sure which transformer fits your load?
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Send your appliance wattage and voltage - we reply within 24 hours with a factory-direct recommendation.