Ohm's law in one line
V = I × R, and P = V × I. Combine the two to derive any quantity from any other two.
This is the foundation of every DC circuit — and a survival skill for hobby electronics.
Ohm's Law Calculator
Enter any 2 — the rest auto-fill. V=IR, P=VI
V
0
I
0
R
0
P
0
How to use the Ohm's Law Calculator
- Fill in any two of Voltage, Current, Resistance or Power.
- The other two solve automatically (highlighted).
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Ohm's Law Calculator
How to use the Ohm's Law Calculator
- Fill in any two of Voltage, Current, Resistance or Power.
- The other two solve automatically (highlighted).
Ohm's law in one line
V = I × R, and P = V × I. Combine the two to derive any quantity from any other two.
This is the foundation of every DC circuit — and a survival skill for hobby electronics.
Enter any 2 — the rest auto-fill. V=IR, P=VI
V
0
I
0
R
0
P
0
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