Online Ohm's Law Calculator (V, I, R)
Instantly solve for Voltage (V), Current (I), or Resistance (R) with our easy-to-use Ohm's Law calculator. An essential tool for students, hobbyists, and engineers.
Ohm's Law Calculation
Select the value you want to solve for.
About Ohm's Law
Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points. The formula is V = I × R.
How to Use the Calculator
- Select Value: Choose the variable (Voltage, Current, or Resistance) you want to solve for.
- Enter Knowns: Input the two known values into their respective fields.
- Calculate: Click the "Calculate" button to see the result instantly.
Example Calculation
Let's find the current in a circuit:
- Solve For: Current (I)
- Voltage (V): 12 V
- Resistance (R): 240 Ω
The calculator will show that the current (I) is 0.05 A.
Frequently Asked Questions
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Try our free Ohm's Law calculator now for instant results!