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Electrical Formula for Watts, Amps, Volts

You will often need to know how much an aquaponics sump, timer, air pump or other device uses to plan for backup power such as solar, battery, generators etc. This formula shows you how:

Electrical Formula to Get Watts

Amps = Watts/Volts
For example 12 watts/12 volts = 1 amp
Watts = Amps x Volts
For example 1 amp * 110 volts = 110 watts
Volts = Watts/Amps
For example 100 watts/10 amps = 10 volts

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


Watts (vA)


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