Easy and Accurate Voltage Unit Conversion

In the world of electronics and electrical engineering, voltage is a fundamental concept. Whether you're analyzing a circuit, reading a component datasheet, or studying electrical theory, you'll encounter voltage values in various scales. Our free Voltage Converter is a handy tool that simplifies the process of converting between these units. It allows for quick and precise conversions between Volts (V), Millivolts (mV), Kilovolts (kV), and more, saving you time and preventing calculation errors.

This tool is indispensable for students, hobbyists, and professionals who need to work with different voltage magnitudes, from the tiny signals in a sensor (microvolts) to the massive potential in power transmission lines (kilovolts). Ensure your calculations are always accurate with this easy-to-use converter.

How to Use the Voltage Converter

1. Enter Your Value: Type the numeric voltage value you want to convert into the "From" input field.
2. Select Your Units: Choose your starting unit (e.g., Volts) from the first dropdown and your target unit (e.g., Millivolts) from the second.
3. Convert: Click the "Convert Voltage" button to get an instant result.
4. Copy Result: Click the "Copy Result" button to easily copy the converted value for your notes, reports, or schematics.

Frequently Asked Questions About Voltage Conversion

Do I need a voltage converter for Europe?

It depends on your device. North America uses ~120V, while Europe uses ~230V. Check the power label on your device's charger or plug. If it says 'INPUT: 100-240V', it is dual-voltage and you only need a simple plug adapter to fit the European outlet. If it only says 'INPUT: 120V', you will need a voltage converter to step down the voltage and prevent damage to your device.

What is a voltage converter used for?

A physical voltage converter is a device that changes the voltage of an electrical power source. Its primary use is to allow a device designed for one voltage standard (e.g., 120V in the US) to be safely used with another (e.g., 230V in Europe). It either 'steps down' (reduces) or 'steps up' (increases) the voltage to match the device's requirement, protecting it from electrical damage.

What happens if I don't use a voltage converter?

Using an electronic device without the correct voltage converter can have serious consequences. Plugging a 120V device into a 230V outlet will send too much power to it, which can instantly overheat and destroy its internal components, making it unusable. Plugging a 230V device into a 120V outlet will underpower it, causing it to not turn on or function very poorly.

What is the difference between a travel adapter and a voltage converter?

A travel adapter and a voltage converter serve two different functions. A travel adapter simply changes the physical shape of your device's plug to fit a foreign wall outlet; it does not change the electrical voltage. A voltage converter is an electrical device that actually changes the voltage. You need an adapter if your device is dual-voltage, but you need a converter (and possibly an adapter) if it is not.

How do I tell if I need a voltage converter?

Look for the power specification label, usually found on the device's power brick, plug, or back panel. Find the 'INPUT' rating. If the range listed is '100-240V' and '50/60Hz', your device is dual-voltage and you do not need a voltage converter, only a plug adapter. If it lists a single voltage, like '120V', then you will need a voltage converter when traveling to a country with a different standard.