How to Use This Tool
Enter a Value
Type the voltage you want to convert into the input field. Decimals and scientific notation are supported.
Choose Your Units
Pick a From unit and a To unit from the dropdowns. Use the swap button to flip them instantly.
Read the Result
The converted value appears instantly below the inputs. Click Copy to put it on your clipboard.
See All Conversions
Scroll down to see the same voltage converted into every other supported unit at once.
Frequently Asked Questions
Is this tool really free?
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Yes, completely free with no limits and no sign-up. Everything runs in your browser.
Is my data sent to a server?
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No. All conversion math happens directly in your browser. Nothing you type is ever sent anywhere.
What units are supported?
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7 units: Volt, Millivolt, Microvolt, Kilovolt, Megavolt, Abvolt, and Statvolt.
What is a Volt?
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The volt (V) is the standard unit of electrical potential difference. A typical household outlet is 120 V in the US or 230 V in Europe.
What is a Millivolt?
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A millivolt (mV) is one thousandth of a volt. It is used for measuring sensor outputs, thermocouple readings, and small signal voltages.
What is a Kilovolt?
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A kilovolt (kV) is one thousand volts. It is used for power transmission lines, medical imaging equipment, and high-voltage testing.
What is a Megavolt?
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A megavolt (MV) is one million volts. It is used for particle accelerators, lightning research, and very high voltage applications.
What is an Abvolt?
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An abvolt is a very small voltage unit from the CGS electromagnetic system, equal to 0.00000001 volts (10 nanovolts). It appears in older physics references.
What is a Statvolt?
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A statvolt is about 299.8 volts. It is a CGS electrostatic unit used in theoretical physics.
Does it update instantly?
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Yes. All results recalculate as soon as you change any input.
What Is Voltage Converter?
Voltage Converter is a free tool that converts between 7 voltage units right in your browser. It covers the practical volt scale (microvolt through megavolt) and the historical CGS units (abvolt and statvolt). Nothing you type is ever sent anywhere - all math runs locally on your device.
The result updates live as you type, and a full conversion table shows the same voltage in every other unit at once. Use the swap button to flip your units instantly, or copy the result to your clipboard in one click.
Features Explained
7 Voltage Units
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Convert between Volt, Millivolt, Microvolt, Kilovolt, Megavolt, Abvolt, and Statvolt.
Volt Scale
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From Microvolt (millionths) through Millivolt and Volt up to Kilovolt and Megavolt, covering everything from sensor signals to power transmission.
CGS Units
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Abvolt (0.00000001 V) and Statvolt (about 299.8 V) for historical physics references and older engineering literature.
All Conversions at Once
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Below the main result, a scrollable table shows the same voltage converted into every other unit simultaneously.
Instant Conversion
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The result updates live as you type. No Convert button needed.
Swap Button
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Click the swap button between the From and To dropdowns to flip them instantly.
Copy to Clipboard
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Click Copy to put the converted value on your clipboard in one click.
High Precision
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Results are displayed with up to 10 significant figures for accurate engineering and scientific work.
Input Validation
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Invalid input shows a clear error message instead of a wrong result.
100% Browser-Based
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All conversion math runs directly in your browser. Nothing you type is ever sent to any server.
Who Is This Tool For?
Electrical Engineers
Convert between volts, millivolts, and kilovolts for circuit design, power systems, and specifications.
Electronics Hobbyists
Convert sensor and component voltages between millivolts and volts when reading datasheets.
Students
Convert between voltage units for physics and electrical engineering homework.
Teachers
Demonstrate voltage unit conversions in real time during physics and electronics lessons.
Physicists
Convert between SI volts and CGS units (abvolt, statvolt) for historical references.
Power Engineers
Convert transmission line and substation voltages between kilovolts and megavolts.
Electricians
Convert household and industrial voltage values between volts and kilovolts.
Automotive Engineers
Convert vehicle electrical system voltages between millivolts and volts.
Medical Device Engineers
Convert biosignal voltages between microvolts and millivolts for device specifications.
Telecommunications Engineers
Convert signal voltages between millivolts and microvolts for link budget calculations.
Solar Panel Installers
Convert panel and inverter voltages between volts and kilovolts for system design.
Battery Engineers
Convert cell and pack voltages between millivolts and volts for testing.
Audio Engineers
Convert microphone and line-level signal voltages between millivolts and volts.
Lab Technicians
Convert instrument readings between voltage units for calibration and reporting.
Embedded Developers
Convert ADC reference and input voltages between millivolts and volts.
Ham Radio Operators
Convert RF signal voltages between millivolts and microvolts.
Industrial Technicians
Convert motor and control system voltages between volts and kilovolts.
Researchers
Convert between SI and CGS voltage units for cross-referencing publications.
Lightning Researchers
Convert lightning strike voltages between megavolts and kilovolts.
Particle Physicists
Convert accelerator voltages between megavolts and statvolts for theoretical work.
EV Enthusiasts
Convert electric vehicle battery and charging voltages between volts and kilovolts.
Drone Builders
Convert battery and motor controller voltages between millivolts and volts.
Science Fair Participants
Convert voltage measurements between units for experiment documentation.
Anyone
Quickly convert any voltage between 7 units for any reason.
Tips for Best Results
Metric prefixes for voltage
1 V = 1,000 mV = 1,000,000 uV. 1 kV = 1,000 V. 1 MV = 1,000,000 V. Each step is a factor of 1,000.
Common voltages
AA battery = 1.5 V. USB = 5 V. US household = 120 V. EU household = 230 V. Car battery = 12 V.
Kilovolts for power lines
Residential distribution lines are typically 4-35 kV. High-voltage transmission lines can be 100-765 kV.
Millivolts for sensors
Thermocouples, strain gauges, and many sensors output in the millivolt range. The tool makes it easy to convert to volts.
Abvolt is extremely small
1 abvolt = 10 nanovolts = 0.00000001 V. It appears in CGS electromagnetic calculations.
Statvolt is about 300 volts
1 statvolt = approximately 299.8 V. It is a CGS electrostatic unit used in theoretical physics.
Use the All Conversions table
Scroll below the main result to see the same voltage in every other unit at once.
Use the swap button
Click the swap button between the dropdowns to flip From and To instantly.
Scientific notation for extremes
For very small (microvolts) or very large (megavolts) values, type scientific notation like 5e-6 or 1.2e6.
Privacy is built in
Nothing you type is ever sent to any server. All math runs in your browser.
Privacy & Security
This tool runs 100% in your browser. Your files stay entirely on your own device. Nothing is uploaded, nothing is shared, and no server, advertiser, or third party has access to your files.
If a tool saves your work on your own device, you can remove it at any time using the Clear All button. Some tools rely on an external service to return their result; in those cases, only the minimum data required for the request is sent, and never your files or content. Any ads shown on this page run in an isolated frame and cannot read, touch, or transmit anything you upload, paste, type, or download here. Advertisers may see standard visit information like your IP address and which page you're on, as described in our Privacy Policy, but your data itself stays fully under your control.
