Ohm’s Law Calculator

🔌 Ohm’s Law Calculator – Voltage, Current, Resistance & Power

Easily solve electrical circuit problems using this professional Ohm’s Law Calculator. Whether you’re a student, hobbyist, or engineer, this tool allows you to calculate any one of the four key electrical parameters—Voltage (V), Current (I), Resistance (R), and Power (P)—when two values are known.

💡 Features:

• Bidirectional calculation: Input any two values and the calculator will determine the other two.
• Multi-unit support: Choose between volts (V/mV), amps (A/mA), ohms (Ω/kΩ/MΩ), and watts (W/kW).
• Real-time updates: Get instant, accurate results as you enter your values.
• Simple interface: Clean, responsive layout optimized for mobile and desktop.

📐 How to Use:

1. Enter any two known values.
2. Choose the correct units for each input.
3. Click “Calculate” – the remaining values will be auto-filled.

This tool is based on the foundational Ohm’s Law formulas:

• V = I × R
• I = V / R
• R = V / I
• P = V × I or P = I² × R or P = V² / R

Perfect for quick checks, lab work, or design verifications—make your electrical calculations faster and more reliable!