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Millivolts to Volts Converter

Convert millivolts (mV) to volts (V), and back, instantly.

What this tool does

Convert millivolts (mV) to volts (V), and back, instantly. Type an amount in millivolts, choose the units, and the tool converts it to volts. It converts between these two voltage units, in either direction.

Inputs

  • Value: A number.
  • From: Choose one: Millivolt, Volt. Starts as Millivolt.
  • To: Choose one of the same 2 units as "From". Starts as Volt.

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. It appears once every required field has a valid value.

Worked examples

Conversions from millivolts to volts:

  • 1 mV = 0.001 V
  • 5 mV = 0.005 V
  • 10 mV = 0.01 V
  • 50 mV = 0.05 V
  • 100 mV = 0.1 V

Multiply the number of millivolts by 0.001 to get volts. Both units are exact definitions, so 0.001 is the exact factor: 1 mV = 0.001 V.

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

Limitations

  • Converts the unit of a voltage only. It does not work out voltage from current, resistance or power.

FAQs

Q: How many volts is one millivolt?
A: One millivolt is 0.001 volt. Pick millivolt as the From unit and volt as the To unit to see it for any value.
Q: Can I convert the other way, from volts to millivolts?
A: Yes. Choose volt in the From box and millivolt in the To box. One volt is 1,000 millivolts.

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