Ohm's Law Calculator

Calculate Voltage, Current, Resistance, and Power instantly using Ohm’s Law.

Enter any 2 values to calculate remaining values.

Voltage: 0.000 V
Current: 0.000 A
Resistance: 0.000 Ω
Power: 0.000 W

 

How to Use

  • Enter any two values (Voltage, Current, Resistance, or Power)
  • Click CALCULATE
  • View all calculated values instantly

Ohm's Law Explanation

Formula: V = I × R

Power Formula: P = V × I

Voltage (V): Electrical potential difference

Current (I): Flow of electric charge

Resistance (R): Opposition to current flow

Power (P): Rate of energy consumption

Ohm's Law Formula Table

To Find Formula
Voltage (V) V = I × R
Current (I) I = V / R
Resistance (R) R = V / I
Power (P) P = V × I

FAQs

What is Ohm's Law?
Relationship between voltage, current, resistance.

Why important?
Used in all electronic circuit design.

Where used?
Electronics, IoT, robotics.

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