How to convert volts to millivolts
mV = V × 1,000Multiply the value in volts by 1,000. To go the other way, multiply by 0.001 (or divide by 1,000).
A volt is larger than a millivolt: one volt contains 1,000 millivolts.
Worked examples
- 1 volt1 V × 1,000 = 1,000 mV
- 5 volts5 V × 1,000 = 5,000 mV
- 10 volts10 V × 1,000 = 10,000 mV
- 20 volts20 V × 1,000 = 20,000 mV
- 100 volts100 V × 1,000 = 100,000 mV
Volts to millivolts conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Volts (V) | Millivolts (mV) |
|---|---|
| 0.1 V | 100 mV |
| 0.25 V | 250 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 |
| 6 V | 6,000 mV |
| 7 V | 7,000 mV |
| 8 V | 8,000 mV |
| 9 V | 9,000 mV |
| 10 V | 10,000 mV |
| Volts (V) | Millivolts (mV) |
|---|---|
| 12 V | 12,000 mV |
| 15 V | 15,000 mV |
| 20 V | 20,000 mV |
| 25 V | 25,000 mV |
| 30 V | 30,000 mV |
| 40 V | 40,000 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 |
About the units
Volt (V)
One joule per coulomb, or one watt per ampere.
Millivolt (mV)
The millivolt (mV) is a unit of electric potential (voltage) in the International System of Units (SI). One millivolt equals 0.001 volts (V).
Frequently asked questions
How many millivolts are in one volt?
There are 1,000 millivolts in one volt, and this value is exact by definition.
How do I convert volts to millivolts?
Multiply the number of volts by 1,000. For example, 10 V × 1,000 = 10,000 mV.
How many volts are in one millivolt?
One millivolt equals 0.001 volts. That is the reverse factor, 1 ÷ 1,000.
What is 10 volts in millivolts?
10 V = 10,000 mV.
Is this V to mV converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.