Voltage converter
Type a voltage, choose the units, and see the same value in every common unit, from microvolts to megavolts and the old CGS abvolt and statvolt.
Runs in your browser: nothing you enter is sent anywhere.
How to use it
- Type a number. A dot or a comma works as the decimal separator.
- Choose the unit you have and the unit you need. The ⇄ button swaps them.
- The table below shows the same value in all common units at once.
Conversion factors
Every unit is converted through the volt (V).
| Unit |
Value |
| 1 kilovolt (kV) |
1,000 V |
| 1 millivolt (mV) |
0.001 V |
| 1 microvolt (µV) |
10⁻⁶ V |
| 1 abvolt |
10⁻⁸ V |
| 1 statvolt |
299.792458 V |
Worked example
A sensor output of 250 mV is 250 × 0.001 = 0.25 V. A 33 kV power line is 33 × 1,000 = 33,000 V.
Quick reference
- 1 V = 1,000 mV = 1,000,000 µV
- 1 statV = 299.792458 V
- Ohm’s law: V = I × R, and power P = V × I
Frequently asked questions
How many millivolts are in a volt?
1,000. One volt equals 1,000 millivolts (mV) and 1,000,000 microvolts (µV).
What is a statvolt?
The CGS electrostatic unit of potential, equal to 299.792458 V. The number comes from the speed of light, 299,792,458 m/s.
What is an abvolt?
The CGS electromagnetic unit of potential, equal to exactly 10⁻⁸ V (10 nanovolts).
How is the volt defined?
One volt is one joule of energy per coulomb of charge, or one watt per ampere. Its size follows from the SI definitions of the second, metre, kilogram and ampere.