Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Ohm's Law Solver (V = IR)

Solves Ohm's Law for voltage, current, or resistance — pick the unknown and enter the other two values. Built on V = I × R, the foundational relationship of every electrical circuit.

Solve For

Voltage (leave 0 if solving for it) (V)

Current (leave 0 if solving for it) (A)

Resistance (leave 0 if solving for it) (Ω)

Electrical

Ohm's Law Calculator

Solves for voltage, current, or resistance in a resistive circuit using V = I × R. Essential for electronics hobbyists, electricians, and students designing or troubleshooting DC and AC circuits.

Voltage (V)

Current (A)

Key differences

	Ohm's Law Solver (V = IR)	Ohm's Law Calculator
Category	Electrical	Electrical
Inputs required	4	2
Result	Result	Resistance (Ω)
What it does	Solves Ohm's Law for voltage, current, or resistance — pick the unknown and enter the other two values. Built on V = I × R, the foundational relationship of every electrical circuit.	Solves for voltage, current, or resistance in a resistive circuit using V = I × R. Essential for electronics hobbyists, electricians, and students designing or troubleshooting DC and AC circuits.