Volts to Millivolts Conversion

Enter the voltage in volts below to get the value converted to millivolts.

Results in Millivolts:
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1 V = 1,000 mV
Do you want to convert millivolts to volts?

How to Convert Volts to Millivolts

To convert a volt measurement to a millivolt measurement, multiply the voltage by the conversion ratio.

Since one volt is equal to 1,000 millivolts, you can use this simple formula to convert:

millivolts = volts × 1,000

The voltage in millivolts is equal to the volts multiplied by 1,000.

For example, here's how to convert 5 volts to millivolts using the formula above.
5 V = (5 × 1,000) = 5,000 mV
conversion scale showing volts and equivalent millivolts voltage values

How Many Millivolts Are in a Volt?

There are 1,000 millivolts in a volt, which is why we use this value in the formula above.

1 V = 1,000 mV

Volts and millivolts are both units used to measure voltage. Keep reading to learn more about each unit of measure.


Voltage is a measurement of electromotive force and the electrical potential difference between two points of a conductor.[1] One volt is equal to the potential difference that would move one ampere of current against one ohm of resistance.

The volt is the SI derived unit for voltage in the metric system. Volts can be abbreviated as V; for example, 1 volt can be written as 1 V.

Ohm's Law states the current between two points on a conductor is proportional to the voltage and inversely proportional to the resistance. Using Ohm's Law, it's possible to express the potential difference in volts as an expression using current and resistance.

VV = IA × R

The potential difference in volts is equal to the current in amperes times the resistance in ohms.


One millivolt is equal to 1/1,000 of a volt, which is the potential difference that would move one ampere of current against one ohm of resistance.

The millivolt is a multiple of the volt, which is the SI derived unit for voltage. In the metric system, "milli" is the prefix for 10-3. Millivolts can be abbreviated as mV; for example, 1 millivolt can be written as 1 mV.

Volt to Millivolt Conversion Table

Volt measurements converted to millivolts
Volts Millivolts
0.001 V 1 mV
0.002 V 2 mV
0.003 V 3 mV
0.004 V 4 mV
0.005 V 5 mV
0.006 V 6 mV
0.007 V 7 mV
0.008 V 8 mV
0.009 V 9 mV
0.01 V 10 mV
0.02 V 20 mV
0.03 V 30 mV
0.04 V 40 mV
0.05 V 50 mV
0.06 V 60 mV
0.07 V 70 mV
0.08 V 80 mV
0.09 V 90 mV
0.1 V 100 mV
0.2 V 200 mV
0.3 V 300 mV
0.4 V 400 mV
0.5 V 500 mV
0.6 V 600 mV
0.7 V 700 mV
0.8 V 800 mV
0.9 V 900 mV
1 V 1,000 mV


  1. International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/documents/20126/41483022/SI-Brochure-9-EN.pdf

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