Quick Calculators

Universal Electrical Calculator

Electricity Calculator (Ohm’s Law & Power Law) – Quick Calculators

Universal Electrical Calculator

The $P, V, I, R$ Solver for all your circuit needs.

This tool instantly solves for **Power ($P$), Voltage ($V$), Current ($I$), and Resistance ($R$)** based on just two known values. Whether you are working with Ohm’s Law or the Power Law, this calculator simplifies circuit analysis for electronics, automotive, and household projects.

2. Calculated Results

Power ($P$)

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Watts (W)

Voltage ($V$)

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Volts (V)

Current ($I$)

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Amps (A)

Resistance ($R$)

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Ohm ($\Omega$)

Understanding the Formulas

This calculator is based on two fundamental laws of electricity, which are crucial for understanding DC circuits:

Ohm’s Law

Relates Voltage, Current, and Resistance:

$$V = I \times R \quad \text{(Voltage)}$$ $$I = \frac{V}{R} \quad \text{(Current)}$$ $$R = \frac{V}{I} \quad \text{(Resistance)}$$

Power Law

Relates Power, Voltage, and Current:

$$P = V \times I \quad \text{(Power)}$$ $$P = I^2 \times R$$ $$P = \frac{V^2}{R}$$