Voltage Converter for Volts, Millivolts, Kilovolts and More
The Voltage Converter switches a value between units of electric potential instantly. Type any number, pick a source unit, and read the equivalent in Volts, Millivolts, Kilovolts, Microvolts and more, with the precision you choose.
It covers 12 units in total: ten SI units from Gigavolt down to Picovolt, plus the two CGS units Abvolt and Statvolt. That makes it useful for electronics and electrical engineers, medical technicians reading biosignals, physicists working in CGS, makers building Arduino or Raspberry Pi projects, and students learning how voltage units relate.
How to Use the Voltage Converter
Enter a value
Type a number into the input field. Large numbers are formatted with thousand separators automatically, so values like 1 000 000 µV stay easy to read.
Pick the source unit
Open the unit dropdown and choose your starting unit. Start typing a name or symbol such as "kV" or "millivolt" to filter the list quickly.
Read every result
All enabled units update instantly below, grouped into SI and CGS. Use the Swap units button to reverse the from and to units in one click.
Copy what you need
Copy any single row, or use Copy All Results to grab every value at once in a clean, paste-ready format.
Fine-tune the display any time: set Decimals to 2, 4, 6, 8 or Auto, click Customize Units to hide units you do not need, and open Unit Reference to see each unit's value relative to the Volt and its typical use.
Features
Instant Conversion
Results update in real time as you type. There is no convert button to press and nothing to wait for.
12 Voltage Units (SI + CGS)
Convert across ten SI units from Gigavolt to Picovolt, plus the CGS units Abvolt and Statvolt.
Smart Input Formatting
Large numbers are formatted with thousand separators so long values stay easy to read and verify.
Searchable Unit Selection
Type a unit name or symbol to filter the dropdown and jump straight to the unit you want.
Customizable Display
Toggle individual units on or off within the SI and CGS groups to focus on the ones relevant to your work.
Precision Control
Choose 2, 4, 6 or 8 decimal places, or Auto mode, to match scientific accuracy or quick readability.
One-Click Swap
Reverse the source and target units instantly with the swap button to flip any conversion.
One-Click Copy
Copy a single result or every result at once in a clean format, ready for documents and spreadsheets.
Unit Reference Guide
A built-in panel lists each unit's symbol, value relative to the Volt, and typical usage.
Works Everywhere
A fully responsive layout runs on desktop, tablet and mobile, so you can convert at the desk, lab or job site.
Frequently Asked Questions
How many millivolts are in a volt?
There are 1,000 millivolts (mV) in one Volt. To convert Volts to Millivolts, multiply by 1,000, so 5 V = 5,000 mV. To go the other way, divide by 1,000.
How do I convert mV to V?
Enter your millivolt value, select mV as the source unit, and read the Volt result below. The math is simply dividing by 1,000, so 2,500 mV = 2.5 V.
What is 1 kV in volts, and how does kV differ from MV?
One Kilovolt (kV) equals 1,000 Volts and is common in power distribution. A Megavolt (MV) equals 1,000,000 Volts, or 1,000 kV, and appears in high-voltage transmission and lightning research.
How do I convert microvolts to millivolts?
There are 1,000 microvolts (µV) in one millivolt (mV). Enter your µV value, choose µV as the source unit, and read the mV result, so 5,000 µV = 5 mV.
What are Abvolts and Statvolts?
These are voltage units from the CGS (centimetre-gram-second) system used in physics. An Abvolt equals 10⁻⁸ V and is used in CGS electromagnetic calculations, while a Statvolt equals about 299.79 V and is used in CGS electrostatics.
Why are tiny units like Nanovolt and Picovolt needed?
Nanovolts (nV) and Picovolts (pV) appear in sensitive electronics, quantum physics and medical instrumentation. Some biomedical sensors work at the nanovolt level, and SQUID magnetometers can detect signals down in the picovolt range.
How accurate are the conversions?
Conversions use internationally recognized factors. SI conversions are exact powers of ten, and CGS conversions use the standard defined values. Use the Decimals selector to show as much precision as you need.
Can I use this for AC and DC voltage?
Yes. The tool converts between units of measurement, which applies equally to AC and DC values. It does not convert between AC and DC systems themselves, only between voltage units.
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