How do I calculate Voltage?

Enter the values for Current (I) and Resistance (R). The tool will automatically calculate Voltage using the formula V = I × R.

Can I use decimal numbers?

Yes, the calculator supports decimal numbers for precise calculations.

What happens if I enter all three values?

The calculator continuously updates the value that wasn't recently edited, ensuring the equation V = I × R remains valid.

Ohm's Law Solver - Voltage, Current, Resistance Calculator | microapps.club

Ohm's Law Solver

Enter any two values to calculate the third.

Voltage (V)

Current (I)

Resistance (Ω)

Instantly compute Voltage (V), Current (I), or Resistance (R) by entering any two values. Essential for electronics and physics calculations.

How to Use This Ohm's Law Solver

1Enter any two known values (e.g., Voltage and Resistance).
2The third value (e.g., Current) will be calculated instantly.
3Modify any value to recalculate dynamically.
4Use the 'Clear' button to reset all fields.

Features

✓Instant calculation of V, I, or R
✓Dynamic updates based on last edited fields
✓Supports decimal values
✓Error handling for division by zero
✓Clean, easy-to-use interface

What is 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, where V is Voltage (volts), I is Current (amperes), and R is Resistance (ohms).

Frequently Asked Questions

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Last Verified: January 2026