USB Voltage Current to Watts Calculator
Convert volts and amps into electrical power for a documented charger/profile.
USB power
Convert volts and amps into electrical power for a documented charger/profile.
This is a planning/compatibility calculation from the values you enter. DeviceOK does not claim to read charger protocols, battery health, cable electronics or mount certification from your browser.
Privacy: Calculated locally.
What this test tells you
This test checks
- Volts × amps
- Entered power profile
How to read the result
Use the negotiated/documented profile, not the charger's biggest printed number alone.