Volt to Millivolt Converter

This article will show how to convert voltage measurement units from volts (V) to millivolts (mV). We will cover essential definitions, provide examples, share relevant formulas, and present tables, along with answers to common questions.

Definitions of Volt and Millivolt

Let’s get started by understanding the key definitions of Volt (V) and Millivolt (mV). Understanding these terms will allow you to perform conversions confidently.

What is Volt (V)?

A volt (V) is the SI (International System of Units) unit of electric potential and voltage. It measures the difference in electric energy between two points in a circuit. One volt means one ampere of current uses one watt of power.^[1]

According to SI prefixes^[2], which are based on powers of 10, a volt (1 V) is equivalent to one thousand millivolts, or 10³ mV, or 1,000 mV.

Definition and illustration of a volt. — What is a Volt? The definition and illustration.

What is Millivolt (mV)?

A millivolt (mV) is a unit of electrical potential equal to one-thousandth (1/1,000) of a volt (0.001 V). It is widely utilized in applications requiring precise measurement of low voltages, such as sensor outputs (e.g., temperature, biomedical devices) and small-scale electronic circuits where minimal electrical signals must be accurately captured and analyzed. Its compact scale makes it ideal for systems sensitive to higher voltage levels.

V to mV formula

Let’s take a closer look at the conversion formula so you can carry out these conversions independently, whether using a calculator or doing it manually with pencil and paper.

The milli- prefix in the International System of Units (SI) represents a multiplier of 10^-3 (0.001). So, to convert from volts to millivolts, multiply the number of volts (V_(V)) by 1,000.

V_(mV) = V_(V) × 10³ = V_(V) × 1,000

\text{V}_\text{(mV)} = \text{V}_\text{(V)} \times 1,000

Or remember the V-to-mV conversion factor: 1 V = 1,000 mV

Examples

Now, let's look at an example that illustrates the calculations required to convert from volts to millivolts (V to mV).

Example: Verifying a solar panel output

You have a small solar panel designed for low-power applications, such as charging batteries or powering sensors. On a sunny day, you measure its output voltage using a multimeter, which displays 2.2 volts (V). However, your charge controller and other system components require voltage values in millivolts (V) for accurate calculations.

Solution

Since 1 volt (V) = 1,000 millivolts (mV), we can convert 2.2 V to millivolts by using the following formula:

$$\text{V}_\text{(mV)} = \text{V}_\text{(V)} \times 1,000$$

$$\text{V}_\text{(mV)} = 2.2 \times 1,000 = \boxed{2,200 \text{ mV}}$$

Therefore, the 2.2 V output voltage of the solar panel is equivalent to 2,200 mV.

To solve the problem with our calculator, follow the steps below:

Enter the value in volts – For this example, enter 2.2 into the From box.
View the result – The converter instantly calculates and displays the equivalent value in millivolts: 2,200 mV.

Steps to convert from volts to millivolts with our calculator

V to mV conversion table

The conversion table below provides a handy reference for converting voltage measurement units from volts (V) to millivolts (mV). It covers a range from 0.1 V to 1,000 V, allowing for easy and quick conversions between these units of measurement.

Volts (V)	Millivolts (mV)
0.1 V	100 mV
0.5 V	500 mV
1 V	1,000 mV
2 V	2,000 mV
4 V	4,000 mV
5 V	5,000 mV
10 V	10,000 mV
20 V	20,000 mV
30 V	30,000 mV
40 V	40,000 mV
50 V	50,000 mV
60 V	60,000 mV
70 V	70,000 mV
80 V	80,000 mV
90 V	90,000 mV
100 V	100,000 mV
200 V	200,000 mV
500 V	500,000 mV
800 V	800,000 mV
1,000 V	1,000,000 mV

Volts (V) to millivolts (mV) conversion table

FAQs

Is 1 volt or 1 millivolt larger?

A volt (V) is a thousand times bigger than a millivolt (mV). Here are the relationships between the units:

1 V = 10³ = 1,000 mV
1 mV = 10^-3 = 1 ÷ 1,000 = 0.001 V

How to convert from volts to millivolts?

To convert voltage from volts (V) to millivolts (mV), follow these simple steps:

Write down the voltage value in volts (V).
Multiply it by the value of a V-to-mV conversion factor: 10³ or 1,000.
The result from multiplication is the value of the voltage in millivolts (mV).

You now know how to convert voltage from volts (V) to millivolts (mV). You can quickly use our calculator to convert between the voltage measurement units to save time for future calculations.