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Volt Converters

Convert volts to millivolts, kilovolts, megavolts, microvolts and other voltage units.

What this tool does

Convert volts to millivolts, kilovolts, megavolts, microvolts and other voltage units. Type an amount in volts, choose the units, and the tool converts it to millivolts. It offers 10 voltage units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one from 10 options, including Gigavolt, Megavolt, Kilovolt, Volt, Millivolt, Microvolt. Starts as Volt.
  • To: Choose one of the same 10 units as "From". Starts as Millivolt.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from volts to millivolts:

  • 1 V = 1,000 mV
  • 5 V = 5,000 mV
  • 10 V = 10,000 mV
  • 50 V = 50,000 mV
  • 100 V = 100,000 mV

Multiply the number of volts by 1,000 to get millivolts. Both units are exact definitions, so 1,000 is the exact factor: 1 V = 1,000 mV.

Sources: Volt: SI Brochure, 9th edition (2019). Millivolt: SI Brochure, 9th edition (2019, updated 2022), Table 7 (SI prefixes).

Limitations

  • Converts the unit of a voltage only. It does not work out voltage from current, resistance or power.
  • Abvolt and statvolt are historical CGS units, listed for completeness.

FAQs

Q: How many millivolts is one volt?
A: One volt is 1,000 millivolts. Pick volt as the From unit and millivolt as the To unit to see it for any value.
Q: Can I convert the other way, from millivolts to volts?
A: Yes. Choose millivolt in the From box and volt in the To box. One millivolt is 0.001 volt.
Q: What are abvolts and statvolts?
A: They are voltage units of the older CGS electromagnetic and electrostatic systems. One abvolt is exactly 0.00000001 volt (10⁻⁸ V). One statvolt is about 299.792458 volts.

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