Voltage Converter
Convert between voltage units including Volt (V), Millivolt (mV), Kilovolt (kV), Megavolt (MV), and more.
Voltage Converter
Convert between voltage units. All conversions use volt (V) as the base SI unit.
Result
Enter a value and click "Convert" to see the result
Understanding Voltage Units
Voltage (electric potential difference) is measured in Volts (V), the SI unit named after Alessandro Volta. It represents the energy per unit charge required to move a charge between two points.
Common Voltage Units:
- Volt (V): SI base unit of electric potential
- Millivolt (mV): 1/1,000 of a volt — used in sensors and biomedical signals
- Microvolt (µV): 1/1,000,000 of a volt — used in EEG and precision measurements
- Kilovolt (kV): 1,000 volts — used in power transmission and X-ray machines
- Megavolt (MV): 1,000,000 volts — used in lightning and high-voltage research
Common Reference Voltages:
- AA Battery: 1.5 V
- USB: 5 V
- Car Battery: 12 V
- Household Outlet (US): 120 V
- Household Outlet (EU): 230 V
- Power Lines: 110–765 kV
Frequently Asked Questions
What is voltage?
Voltage is the electrical potential difference that pushes current through a circuit, measured in volts (V). It is analogous to water pressure in a pipe.
How many millivolts are in a volt?
1 volt = 1,000 millivolts (mV). Microvolts are even smaller: 1 V = 1,000,000 µV. The tool converts between all of them.
How do I convert kV to V?
Multiply kilovolts by 1,000. So 11 kV = 11,000 V, a common distribution voltage.
What is the difference between voltage, current, and power?
Voltage (V) is potential difference, current (A) is the flow of charge, and power (W) is their product: Watts = Volts × Amps.