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Millivolts to Volts Converter

Convert millivolts to volts and volts to millivolts instantly. Bidirectional voltage converter with formula and common values.

Millivolts to Volts: 1 mV equals 0.001 V. To convert millivolts to volts, multiply by 0.001 (V = mV × 0.001). For example, 10 mV = 0.01 V.

500 mV = 0.5 V

V = mV × 0.001

How to Convert Millivolts to Volts

To convert from millivolts to volts, multiply the value by 0.001. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Millivolts to Volts: V = mV × 0.001
  • Volts to Millivolts: mV = V × 1000
Millivolts to Volts conversion scale — a dual ruler showing 1 mV equals .001 V.
Millivolts to Volts conversion scale (mV to V).

Millivolts to Volts Conversion Chart

Millivolts (mV)Volts (V)
0.10.0001
0.250.00025
0.50.0005
10.001
20.002
30.003
50.005
100.01
200.02
250.025
500.05
1000.1
2500.25
10001

Understanding the Units

What is a Volt?

The volt is the SI derived unit of electric potential difference, equal to one joule per coulomb (1 V = 1 J/C = 1 W/A).

Named after Alessandro Volta (1745–1827), Italian physicist who invented the first electrical battery.

Common contexts: power systems, electronics, batteries.

Real-World Reference Points

Item Millivolts (mV) Volts (V)
AA battery15001.5
USB power50005
US wall outlet120000120

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FAQ

How many volts are in one millivolt?

One millivolt equals 0.001 volts. You divide the millivolt value by 1,000 to get volts.

Why would I need to convert millivolts to volts?

When comparing sensor output readings (often in mV) with standard voltage specifications given in volts, or when entering data into systems that expect volt-scale values.

What is the millivolt unit symbol?

The millivolt is abbreviated as mV. It uses the lowercase "m" prefix for milli- (10⁻³) combined with the uppercase "V" for volt.

Are millivolts used in everyday electronics?

Millivolts appear in thermocouple outputs, audio signal levels, solar cell measurements, and precision analog circuits. Most consumer electronics operate in the volt range.

How many volts are in 1 millivolt?

1 mV equals 0.001 V.

How do you convert millivolts to volts?

Multiply the millivolt value by 0.001. Formula: V = mV × 0.001.

How many volts are in 5 millivolts?

5 mV = 0.005 V.

How do you convert volts back to millivolts?

Use the inverse formula: mV = V × 1000. For example, 1 V = 1000 mV.