Voltage Converter
Convert voltage between volts, millivolts, microvolts, kilovolts and CGS units.
Change the values and press Calculate to work out your own figures.
Enter a voltage, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 mV = 0.001 V
- 500 × 0.001 = 0.5 V
How to use it
Type a voltage, choose the unit it is in and the unit you want, then press Calculate. You can type decimals, fractions such as 3/8, mixed numbers such as 1 1/2, very large or small numbers such as 2.5e6, and simple sums such as 2*3. Swap exchanges the two units.
The answer is worked out with exact fractions and only rounded for display, to 12 significant figures. Below it you get the same value in every other unit on the list, and Show the working gives the factor that was used.
Key definitions
1 kV = 1,000 V 1 V = 1,000 mV = 1,000,000 µV
Everyday voltages
A single AA cell is about 1.5 V, a car battery 12 V, and household mains 120 V in North America or 230 V in most other countries. Sensor and audio signals are often measured in millivolts or microvolts.
Questions
How many millivolts are in a volt?
1,000.
What is a statvolt?
The CGS electrostatic unit of voltage, exactly 299.792458 volts.
Formulas
result = (value × f(from) + o(from) − o(to)) ÷ f(to)
Sources
Limitations
- Only the units listed are supported here; other voltage units arrive with later M4 slices.