Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance between them. The formula is V = I × R, where V is voltage, I is current, and R is resistance.

You need to provide any two of the four values (voltage, current, resistance, or power). The calculator will compute the other two values based on Ohm's Law and power formulas.

Yes! This calculator can compute electrical power using the formula P = V × I. If you provide any two values, the calculator will determine power along with the other parameters.

The calculator uses standard SI units: Volts (V) for voltage, Amperes (A) for current, Ohms (Ω) for resistance, and Watts (W) for power.

Yes, after calculating, you can download your results as a PNG image or PDF document using the download buttons in the results section.