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Volts to Millivolts Converter

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

Volts to Millivolts: 1 V equals 1000 mV. To convert volts to millivolts, multiply by 1000 (mV = V × 1000). For example, 10 V = 10000 mV.

3.3 V = 3,300 mV

mV = V × 1000

How to Convert Volts to Millivolts

To convert from volts to millivolts, multiply the value by 1000. The conversion is linear, meaning doubling the input doubles the output.

Conversion Formula

  • Volts to Millivolts: mV = V × 1000
  • Millivolts to Volts: V = mV ÷ 1000
Volts to Millivolts conversion scale — a dual ruler showing 1 V equals 1,000 mV.
Volts to Millivolts conversion scale (V to mV).

Volts to Millivolts Conversion Chart

Volts (V)Millivolts (mV)
0.1100
0.25250
0.5500
11000
22000
33000
55000
1010000
2020000
2525000
5050000
100100000
250250000
10001000000

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 Volts (V) Millivolts (mV)
AA battery1.51500
USB power55000
US wall outlet120120000

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FAQ

How many millivolts are in one volt?

One volt equals exactly 1,000 millivolts (mV). The milli- prefix denotes one-thousandth of the base unit.

When are millivolts used instead of volts?

Millivolts are common in sensor outputs, thermocouple readings, biomedical signals like EEG and ECG, and low-level analog circuit measurements.

How do I convert volts to millivolts?

Multiply the voltage in volts by 1,000. For example, 3.7 V × 1,000 = 3,700 mV.

What instruments measure millivolts?

Digital multimeters with mV range, oscilloscopes, and precision voltmeters can measure millivolt-level signals accurately.

How many millivolts are in 1 volt?

1 V equals 1000 mV.

How do you convert volts to millivolts?

Multiply the volt value by 1000. Formula: mV = V × 1000.

How many millivolts are in 5 volts?

5 V = 5000 mV.

How do you convert millivolts back to volts?

Use the inverse formula: V = mV ÷ 1000. For example, 1 mV = 0.001 V.