Volts / Watts / Amps Converter

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Enter any two values and press calculate
to get the remaining value:


Watts (vA)


How to use this tool:

Watts = Amps x Volts

Watts is also known as volt-amps and is typically used in conjunction with AC power circuits. Fill in any of the two fields to find the value of the third.

Example 1

You have a 12 Volt power supply that delivers 1 Amp of current. Fill in the Volts and Amps fields to find the Watts.

Example 2

The AC24-40 power supply is a 24V AC power supply that can power up to 40 VA.

  1. Enter 24 under volts
  2. Enter 40 under watts
  3. Click calculate
  4. You get 1.66 in this example.

Thus, the AC24-40 can supply up to 1.6 Amps at 24V AC.