Volts to Millivolts Converter
Convert volts (V) to millivolts (mV) as you type — 1 V = 1,000 mV. Switch units, change the precision or copy the result.
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How to use this tool
Steps for using the Unit Converter.
- Enter a value in From — volts are already selected.
- The result in millivolts appears instantly. Change either unit to convert to anything else in voltage.
- Use the swap button for the reverse conversion, and set the decimal places you need.
- Turn on Show formula to see the calculation, then copy or share the result.
Example
1 V to mV
1 VmV = 1 × 1000 = 1,000 mVCommon use cases
- Sensor and thermocouple outputs in mV.
- Battery and supply voltages.
- Power distribution in kV.
Volts to Millivolts conversion table
| Volt (V) | Millivolt (mV) |
|---|---|
| 0.1 V | 100 mV |
| 0.5 V | 500 mV |
| 1 V | 1,000 mV |
| 2 V | 2,000 mV |
| 3 V | 3,000 mV |
| 4 V | 4,000 mV |
| 5 V | 5,000 mV |
| 10 V | 10,000 mV |
| 15 V | 15,000 mV |
| Volt (V) | Millivolt (mV) |
|---|---|
| 20 V | 20,000 mV |
| 25 V | 25,000 mV |
| 50 V | 50,000 mV |
| 75 V | 75,000 mV |
| 100 V | 100,000 mV |
| 250 V | 250,000 mV |
| 500 V | 500,000 mV |
| 1,000 V | 1,000,000 mV |
Values rounded to 6 decimal places.
Related conversions
The units
- Volt (V)
- 1 W/A, the SI unit of voltage. Part of the SI system.
- Millivolt (mV)
- 1/1000 V. Part of the Metric system.
How to convert volts to millivolts
Sensor outputs, thermocouples and audio signals are small, so datasheets often express them in millivolts.
To convert volts to millivolts, use mV = V × 1000. One volt equals 1,000 millivolts, and one millivolt equals 0.001 volts.
Volt (V): 1 W/A, the SI unit of voltage. Millivolt (mV): 1/1000 V.
All voltage units are on the voltage converter.
Limitations
- Results are rounded to the decimal places you choose; the calculation itself keeps full precision.
Frequently asked questions
How many millivolts are in a volt?
1 V = 1,000 mV. Multiply volts by 1000 (or use mV = V × 1000).
How do I convert volts to millivolts?
Use mV = V × 1000. For example, 1 V = 1,000 mV and 10 V = 10,000 mV.
What is a typical mains voltage?
Around 230 V in most of Europe, Asia and Africa, and 120 V in North America.