Voltage Converter — Free Online Tool
Convert voltage units online for free. Supports volts, millivolts, microvolts, kilovolts, and megavolts. Instant electrical unit conversion.
About Voltage Converter
Voltage conversion between units is needed in electronics design, electrical engineering, physics, and understanding power specifications. Our voltage converter handles all common voltage units: microvolts (sensor signals), millivolts (small signals), volts (standard household and electronic), kilovolts (industrial and transmission), and megavolts (high-voltage power lines). Enter any voltage value and see all unit equivalents instantly. Useful for understanding the scale of different electrical systems from sensors to power grids.
Frequently Asked Questions
How many millivolts in a volt?
1 volt = 1000 millivolts. 1 millivolt = 0.001 volts.
What voltage is used in household electricity?
120V at 60Hz in North America. 230V at 50Hz in Europe, UK, India, and most of the world.
What voltage do batteries produce?
AA/AAA batteries: 1.5V. Car battery: 12V. Smartphone: 3.7-4.2V Li-ion.
What are kilovolts used for?
Kilovolts are used in high-voltage transmission lines, X-ray machines, and industrial equipment.
What is the relationship between volts, amps, and watts?
Watts = Volts x Amps. Knowing voltage and current, you can calculate electrical power consumption.