Voltage Calculator
Calculate voltage, current, or resistance using Ohm's Law.
Voltage Calculator
Common Voltage Scenarios
Click on these links to see instant calculations with common values:
Understanding Voltage
Voltage is the electric potential difference between two points, often thought of as the 'pressure' that pushes electrons.
Formulas
Voltage (V): V = I × R
Where:
• V = Voltage in Volts
• I = Current in Amperes
• R = Resistance in Ohms
Where:
• V = Voltage in Volts
• I = Current in Amperes
• R = Resistance in Ohms
Frequently Asked Questions
What is the difference between voltage and current?
Voltage is the potential for energy to move, while current is the rate of flow of that energy.