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 & Power Calculator

Solve for voltage, current, resistance, or power in any DC circuit by entering just two known electrical values. Ideal for electronics hobbyists, electricians, and students checking circuit designs.

First Known Value

First Value Type

Second Known Value

Second Value Type

Key differences

	Ohm's Law Solver (V = IR)	Ohm's Law & Power Calculator
Category	Electrical	Electrical
Inputs required	4	4
Result	Result	Power (W)
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.	Solve for voltage, current, resistance, or power in any DC circuit by entering just two known electrical values. Ideal for electronics hobbyists, electricians, and students checking circuit designs.