Enter any two known values to calculate the remaining electrical parameters
Ohm's Law describes the relationship between voltage, current, resistance, and power in electrical circuits. By knowing any two values, you can calculate the others using the fundamental formulas V = I × R and P = V × I. This tool is essential for circuit design, troubleshooting, and electrical engineering.
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. It is expressed as V = I × R, where V is voltage in volts, I is current in amperes, and R is resistance in ohms.
Electrical power is calculated as P = V × I (watts). By substituting Ohm's Law, you can also use P = I² × R or P = V² / R. These variations allow you to calculate power from any two known electrical values.