Easily solve Ohm's Law equations. Enter any two known variables—Voltage (V), Current (I), Resistance (R), or Power (P)—and instantly calculate the remaining values. Perfect for students and electronics hobbyists.
Privacy Protected
Ohm's Law Calculator
Calculate Voltage (V), Current (I), Resistance (R), and Power (P). Enter any two values.
Share Tool
About Ohm's Law Calculator
1
Input Knowns
Enter any two values (Voltage, Current, or Resistance).
2
Solve Missings
The tool solves for the third value and Power (Watts).
3
Check Formula
Review the math used for verification and learning.
Key Features
Instant Calculation
Solves automatically as you type.
4-Way Solving
Calculate V, I, R, or P.
Formula Reference
View the formulas used.
Frequently Asked Questions
It states that V = I × R, linking Voltage, Current, and Resistance.
Related Tools
View allMerge PDF
Combine multiple PDFs into one unified document.
Word Counter
Count words and chars.
Unit Converter
Convert length, weight, etc.
Image Converter
Convert between JPG, PNG, WEBP, and BMP.
Password Generator
Generate strong, secure passwords.
QR Code Generator
Create QR codes.
Last updated on