Ohm's Law Calculator
Calculate voltage, current, resistance, and power using Ohm's Law (V = I × R) and the power equation (P = V × I).
Ohm's Law: V = I × R
Calculate:
Common Voltages:
Calculated Voltage
12.000 V
Energy Consumption:
Energy per hour: 0.0240 kWh
Energy per day: 0.5760 kWh
Energy per month: 17.28 kWh
Formulas Used:
V = I × R
I = V / R
R = V / I
P = V × I
What is Ohm's Law?
Ohm's Law is a fundamental principle in electrical engineering that states the current through a conductor between two points is directly proportional to the voltage across the two points. Mathematically expressed as V = I × R, where V is voltage (in volts), I is current (in amperes), and R is resistance (in ohms).
Ohm's Law Triangle
Cover the quantity you want to find:
V = I × R | I = V ÷ R | R = V ÷ I
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
Formula Source: University Physics
by Young & Freedman