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Millivolt to Volt Converter

1 millivolt is exactly 0.001 volts. Convert millivolts (mV) to volts (V) below: type a value and the result updates as you type.

mV to V calculator

Dot or comma decimals and scientific notation (1e-3) work.

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Result

Millivolt to Volt conversion

1 mV = 0.001 Vone millivolt in volts

1 V = 1000 mVone volt in millivolts

Millivolt (mV): One thousandth of a volt. Thermocouples and sensors output millivolts.

Volt (V): SI unit of electric potential difference (voltage): one watt per ampere.

Source:SI Brochure, 9th edition (BIPM, 2019)

How to convert millivolts to volts

To convert millivolts to volts, multiply the number of millivolts by 0.001.

Formula

V = mV × 0.001

Examples

  • 5 mV = 5 × 0.001 = 0.005 V
  • 25 mV = 25 × 0.001 = 0.025 V
  • 100 mV = 100 × 0.001 = 0.1 V

Millivolt to Volt conversion table

Millivolt to Volt
Millivolt (mV)Volt (V)
0.1 mV0.0001 V
0.5 mV0.0005 V
1 mV0.001 V
2 mV0.002 V
3 mV0.003 V
5 mV0.005 V
10 mV0.01 V
20 mV0.02 V
25 mV0.025 V
50 mV0.05 V
100 mV0.1 V
250 mV0.25 V
500 mV0.5 V
1000 mV1 V

Values rounded to 10 significant digits where needed.

Frequently asked questions

How many volts are in one millivolt?
One millivolt is exactly 0.001 volts.
How do I convert volts to millivolts?
To convert volts to millivolts, multiply the number of volts by 1000. The formula is mV = V × 1000.
Is this conversion exact?
Yes. Both units have exact definitions and the factor 0.001 is exact. Displayed results are only rounded when they have many decimal places.
Which is larger, a millivolt or a volt?
A volt is 1000 times larger than a millivolt. In other words, a millivolt is exactly 1/1000 of a volt.