Ohm's Law: Current
I = V / R
Instructions
Enter voltage in volts and resistance in ohms. The calculator returns current in amperes.
Formula
I = V / R
Common Questions
AC circuits?
For AC with reactance, use impedance Z instead of pure resistance R.
What is the Ohm?
Calculate current from voltage and resistance: I = V/R. Free online calculator. Get instant results. Includes formulas and step-by-step solutions. Free forever. This calculator is designed for students, professionals, and anyone who needs fast, reliable results without manual computation. Simply enter your values above and get instant answers with step-by-step explanations.
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Why Use This Calculator?
Manual calculations are time-consuming and error-prone, especially when dealing with complex conversions or formulas. This calculator eliminates guesswork by providing precise results every time you use it.
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