Ohm's Law Calculator

Enter 2 values to get the other values and press the Calculate button:

Resistance (R)

ohms (Ω) kiloohms (kΩ) megaohms (MΩ)

Current (I)

microamps (μA) milliamps (mA) amps (A) kiloamps (kA) megaamps (MA)

Voltage (V)

microvolts (μV) millivolts (mV) volts (V) kilovolts (kV) megavolts (MV)

Power (P)

microwatts (μW) milliwatts (mW) watts (W) kilowatts (kW) megawatts (MW)

  = Calculate × Reset

Calculation

Voltage divider calculator ►

Ohm's law formula

The voltage V in volts (V) is equal to the current I in amps (A) times the resistance R in ohms (Ω):

V_(V) = I_(A) × R_(Ω)

The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A):

P_(W) = V_(V) × I_(A)

AC Ohm's law calculator

Enter 2 values of magnitude+phase angle to get the other values and press the Calculate button:

Impedance (Z):
	Ω kΩ MΩ	∠		°	=
Current (I):
	μA mA A kA MA	∠		°
Voltage (V):
	V kV MV	∠		°
Power (S):
	VA kVA MVA	∠		°	=
= Calculate × Reset

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