Battery Equivalents and Replacements

Millivolts (mV) to Volts (V) Conversion Calculator and Table

Millivolts (mV) to Volts (V) are units of voltage, and their conversions are simple and straightforward - one just has to remember that "m" stands for "milli," which is, according to the SI prefixes table, 10-3 (one thousandth) of the main value.

Published: January 13, 2024.

To convert millivolts (mV) to volts (V), write the value in millivolts (mV) and click 'Calculate':

Millivolts (mV) to Volts (V)

Millivolts (mV):

Volts (V):

To convert volts to millivolts, check our Volts to Millivolts Conversion Calculator and Table article.

How To Convert Millivolts (mV) to Volts (V)

"m" stands for "milli" and means "one thousandth."  Thus, one millivolt equals one-thousandth volt.

1 mV = 1/1000 V


1000 mV = 1 V

For example, if You want to convert 1534 millivolts (mV) to volts (V), You can write:

1534 mV = 1534 / 1000 V = 1.534 V

Another example - what is the resting potential of a neuron?

A neuron has a resting potential of about -70 millivolts (mV), which is:

-70 mV = -70 / 1000 V = -0.07 V

Millivolts (mV) to Volts (V) Conversion Table

The following chart contains the most common millivolts (mV) values converted to volts (V):

Millivolts (mV) Volts (V)
0.01 0.00001
0.1 0.0001
1 0.001
10 0.01
50 0.05
100 0.1
500 0.5
1000 1
5000 5
10000 10
100000 100


If You wish to convert values that are not in the table, please use the Millivolts (mV) to Volts (V) conversion calculator.

Introduction to Volts: The Unit of Electric Potential


The volt (symbol: V) is the standard unit of electric potential and electromotive force in the International System of Units (SI). It plays a crucial role in electrical engineering, electronics, and physics.

Historical Background

The term "volt" is derived from the name of Alessandro Volta, an Italian physicist who invented the Voltaic Pile, considered the first chemical battery. Volta's groundbreaking work in the late 18th and early 19th centuries paved the way for the modern understanding of electricity and electrochemistry.

The adoption of the volt as a unit of electric potential was a part of the efforts to standardize electrical measurements in the late 19th century. As the science of electricity advanced, there was a growing need for a unified system of units. The volt was officially recognized and defined by the International Electrical Congress in 1881, reflecting the significant advances in electrical science and technology of that era.

The Volt as a Unit of Electric Potential

A volt is defined as the potential difference across a conductor when a current of one ampere dissipates one watt of power.

In other words, 1 Volt = 1 Watt per 1 Ampere (Ohm's Law): 

U(V) = 1V = 1W / 1A

This definition ties together three fundamental electrical quantities: voltage, current, and power, making the volt essential for understanding and measuring electrical circuits.

The concept of electric potential, represented by volts, is akin to the pressure in a water system. It represents the potential energy per unit charge that drives electric current through a circuit, much like water pressure drives water through pipes.

Typical Voltage Values: From Batteries to AC Systems

Voltage values can vary widely depending on the application. Common examples include:

  • Household Batteries: These typically range from 1.5 volts for standard AA batteries to 9 volts for small rectangular batteries. These low-voltage sources are ideal for small, portable electronic devices.
  • Automotive Batteries: A standard car battery usually provides about 12 volts. This voltage is sufficient to power a car's electrical system, including the starter motor and lights.
  • Household AC Supply: In many countries, the standard voltage for household electrical outlets is between 110 and 120 volts, while in others, it is between 220 and 240 volts. This higher voltage is necessary for powering appliances and electronic devices in homes.
  • High Voltage Power Lines: Transmission lines that carry electricity across long distances can operate at extremely high voltages, ranging from tens of thousands (kV) to hundreds of thousands of volts (kV). High voltage is used for efficient long-distance transmission of power.

The volt, as a unit of electric potential, is fundamental to the study and application of electricity.

Its historical origins reflect the evolution of electrical science, while its practical applications, from the small scale of batteries to the large scale of power transmission, demonstrate its ubiquity and importance in the modern world.