Resistance Calculator

Resistance Calculator – Calculate Ohms Using Ohm’s Law

A resistance calculator helps you determine electrical resistance using Ohm’s Law. Resistance (R) is calculated by dividing voltage (V) by current (I), making it one of the most important formulas in electrical engineering and circuit design.

Resistance Formula

Resistance is calculated using:

• R = V ÷ I

Example Calculation

If voltage is 10 volts and current is 1 ampere:

• Resistance = 10 ÷ 1 = 10 Ω

Why Resistance Matters

Resistance controls the flow of electric current in a circuit. Higher resistance reduces current flow, while lower resistance allows more current to pass through.

Applications

This calculator is useful for:

• Electrical circuit design
• Electronics troubleshooting
• Engineering calculations
• Student learning and exams

You can also explore our Ohm’s law calculator, current calculator, and power calculator.