Ohm’s Law Calculator

Calculate Voltage, Current, or Resistance using Ohm’s Law.

Voltage: $V = I \times R$
Current: $I = \frac{V}{R}$
Resistance: $R = \frac{V}{I}$

Step 1: Select Variable and Enter Parameters

Select What to Calculate:

Voltage Current Resistance

Current,

I

(A):

Example: 2 A

Resistance,

R

(Ω):

Example: 5 Ω

Calculated Result