Ohm's Law
×
Enter any two values. The other two values will be calculated for you.
Current
(I)
Amps
Power
(P)
Watts
Resistance
(R)
Ohms
Voltage
(V)
Volts
Clear
Formula Reference
I = V ÷ R = P ÷ V = √
P ÷ R
P = V x I = V
2
÷ R = I
2
x R
R = V ÷ I = P ÷ I
2
= V
2
÷ P
V = I x R = P ÷ I = √
P x R