Enter any two values (Watts, Volts, Amps) and we’ll work out the third for you.
Enter any two values; the third is calculated automatically.
The Watt Volt Amp Calculator is a simple, professional tool designed for electricians, engineers, and DIY enthusiasts who need to quickly calculate electrical values. Using the triangle method, this calculator allows you to enter any two values (Watts, Volts, or Amps) and instantly calculates the third value.
Our W/V/A calculator uses the fundamental electrical formula: Power (Watts) = Voltage (Volts) × Current (Amps). The visual triangle diagram makes it easy to understand the relationship between these three values. Simply enter any two known values, and the calculator instantly provides the missing value.
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The Watt Volt Amp calculator is trusted by UK electrical professionals for quick calculations on the job site. Whether you're sizing circuit breakers, calculating power consumption, or verifying electrical loads, this tool provides instant results. The simple interface makes it perfect for both professionals and DIY enthusiasts.
For more information about electrical safety and regulations, visit Electrical Safety First or consult CITB for electrical training standards.