Ohm’s Law Calculator
VOLTAGE • CURRENT • RESISTANCE • POWER
V
I
R
P
I
V
Enter Any Two Values
Leave two fields blank to calculate them.
V
A
Ω
W
Results
Voltage
0.00V
Current
0.00A
Resistance
0.00Ω
Power
0.00W
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Formula Reference
V
I × R P ÷ I √(P × R)
I
V ÷ R P ÷ V √(P ÷ R)
R
V ÷ I V² ÷ P P ÷ I²
P
V × I I² × R V² ÷ R