Ohm's Law Calculator

How the Calculator Works

Ohm’s Law describes the relationship between voltage, current, and resistance:

V = I × R
  

From this equation, the calculator can solve for any missing value:
• Voltage (V)
• Current (I)
• Resistance (R)

Example

Given:
Current = 3 A  
Resistance = 4 Ω  

Possible Output:
Voltage = 12 V