Voltage Converter — Free Online Tool

Convert Volts, millivolts, kilovolts, megavolts and microvolts. Voltage Converter is a free online tool from the ToolsRift Unit Converters collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

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How to use Voltage Converter

  1. Open the Voltage Converter above — it loads instantly, no account needed.
  2. Enter or upload your input. Everything is processed locally on your device.
  3. Get your result immediately and copy or download it with one click.

Frequently asked questions

How many millivolts in a volt?

1 volt (V) = 1,000 millivolts (mV) = 1,000,000 microvolts (µV).

What voltage is a household outlet?

Household mains voltage is typically 120V (North America) or 220–240V (most of Europe, Asia and Africa).

How many volts in a kilovolt?

1 kilovolt (kV) = 1,000 volts, commonly used for power transmission lines.

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