Solve voltage, current, resistance and power from any two values. This free tool by electronmagazine.com runs entirely in your browser — no sign-up, no uploads, no tracking of your input.
How to use
- Enter any two of voltage, current, resistance or power.
- Leave the others blank.
- Click Calculate to solve the remaining values.
FAQ
What is Ohm's law?
V = I × R: voltage equals current times resistance.
How is power calculated?
P = V × I, or equivalently I²R and V²/R.
What units are used?
Volts, amperes, ohms and watts.
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