Voltage Converter

Convert electrical potential (voltage) between volts, millivolts, microvolts, kilovolts, and megavolts. Used in electronics, power systems, and physics.

Common Voltage Conversions

FromTo
1 kV1,000 V
1 MV1,000,000 V
1 mV0.001 V
1 µV0.000001 V
Mains voltage (US)120 V
Mains voltage (EU)230 V
AA battery1.5 V
Car battery12 V

Voltage Unit Definitions

Volt (V)
SI unit of voltage (electric potential difference).
Millivolt (mV)
0.001 V. Typical for sensors and biomedical signals.
Kilovolt (kV)
1,000 V. Used in high-voltage power lines and X-rays.

Frequently Asked Questions

What is the mains voltage in the US vs Europe?

US uses 120 V at 60 Hz; Europe uses 230 V at 50 Hz. Devices must be checked for compatibility.