Work out voltage, current, resistance or power from any two of them with Ohm’s law and the power formula.
loading toolHow to use the ohm's law calculator
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Questions
What is Ohm’s law?
Voltage = current × resistance (V = I × R). With power P = V × I you can find any two values from the other two.
Is my data private?
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Completely free, with no sign-up, no watermark and no limit on how many times you use it. Light ads keep the site running.
