Watts, Volts, Amps & Ohms Calculator

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Power (watts):

Voltage (volts):

Current (amps):

Resistance (ohms):

Watt is a unit of power, within electrical systems wattage corresponds to the amount of power that an electric device uses per second.

Volt is a measurement of voltage, volts represent the electrical potential difference or pressure.

Ampere or amp is a measurement of electrical current, amps represent the rate at which electricity flows.

Ohms is a unit of electrical resistance, the greater the ohms the more difficult it is for current to flow.

Watt calculation/conversion formulas:

watts = volts² / ohms

watts = amps² * ohms

watts = volts * amps

Volt calculation/conversion formulas:

volts =  watts * ohms 

volts = watts / amps

volts = amps * ohms

Amp calculation/conversion formulas:

amps = volts / ohms

amps = watts / volts

amps =  watts / ohms 

Ohms calculation/conversion formulas:

ohms = volts / amps

ohms = volts² / watts

ohms = watts / amps²


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