Ohm's Law

Ohm’s Law states: V = IR , and Joules Law states: P = VI

By combining these two laws, we can calculate any item from any other two known values:

V =	I.R
	P/I
	√ P.R

I =	V/R
	P/V
	√ P/R

R =	V/I
	V²/P
	P/I²

P =	V.I
	V²/R
	R.I²

Where: V = Voltage (volts), I = Current (amps), R = Resistance (ohms), and P = Power (watts)

Ohm's Law Calculator:

Enter any two known values, and press Calculate to find the remaining two unknown values.
Always Clear the fields before starting a new calculation.