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Calcimator

Ohm's Law Calculator

Calculate voltage, current, resistance, or power using Ohm's Law (V = I × R). Enter any two values to find the others.

Inputs

V
A
Ω

Results

Voltage

12 V

Current2 A
Resistance6 Ω
Power24 W

Voltage

12 V

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Solve For — The variable to solve for. Choose from: Voltage (V), Current (I), Resistance (R). default: 0.
  3. Voltage — Voltage in volts (V). Accepts values from 0 V to 1,000,000 V (default: 12 V).
  4. Current — Current in amperes (A). Accepts values from 0 A to 100,000 A (default: 2 A).
  5. Resistance — Resistance in ohms (Ω). Accepts values from 0 Ω to 1,000,000 Ω (default: 6 Ω).
  6. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  7. Voltage — shown as a numeric value. This is the primary result of this calculator.
  8. Current — shown as a numeric value.
  9. Resistance — shown as a numeric value.
  10. Power — shown as a numeric value.
  11. View the Electrical Values below for a visual breakdown of how the numbers relate to each other.
  12. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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