Voltage Converter

Supports accurate conversion between 6 voltage units, including volts, millivolts, and kilovolts, suitable for electronic engineering and circuit design.

Bug report

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Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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Tool Usage

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Input VoltageSupports decimals, negatives, and scientific notation

Source Unit

Main Result Unit

Quick Input

Common Scenarios

Batch DataOne voltage value per line, unit optional

Use “value unit symbol”; if no unit is given, the default source unit below is used.

Default Source Unit

Target Unit

Display Precision

Number format

Copy format

View results

Filter by unit name or symbol. Click any result card to copy it.

Save, copy, and helper calculations

Main result

5 volts = 5 volts

Select parameters to start conversion.

Volt reference5 V

Unit rangeSI voltage units

Result count12 units

Ohm's law helper

Current IAmpere A

Resistance ROhm ohm

Power PWatt W

Common references & history

Conversion: 1 V = 1000 mV = 1000000 uV, 1 kV = 1000 V.

Conversion history

Instructions

Software Usage Instructions

Set the voltage value: Enter the value to be converted in “Input Voltage”. Decimals, negative numbers, and scientific notation are supported.
Select the source and target units: Convert between units such as volts (V), millivolts (mV), microvolts (uV), nanovolts (nV), kilovolts (kV), megavolts (MV), gigavolts (GV), and more.
Use sample data: Click sample data, quick input, or common scenario buttons to quickly fill in reference values such as 3.3V, 5V, 12V, 220V, and 10kV.
Set the result format: Choose smart precision, fixed decimal places, thousands separators, scientific notation, engineering notation, and text or CSV copy formats.
Batch conversion: After switching to batch mode, enter one voltage value per line, using formats such as “5 V”, “3300 mV”, or “0.22 kV”.
View and copy results: Click “Start Conversion, Go to Next Step” to view results in all units. You can copy a single item, copy all results, or download a CSV.
Auxiliary calculation: Enter current and resistance in the Ohm’s Law section to calculate voltage using V=I×R, and automatically apply it to the conversion results.

FAQ

A: Units such as nanovolts (nV), microvolts (uV/μV), millivolts (mV), centivolts (cV), decivolts (dV), volts (V), decavolts (daV), hectovolts (hV), kilovolts (kV), megavolts (MV), gigavolts (GV), teravolts (TV), and more are supported.

A: Common relationships are 1V=1000mV=1000000uV, 1kV=1000V, and 1MV=1000000V. The tool first converts the value to the base unit of volts, then calculates the results for other units.

A: Enter one voltage value per line, with units if needed, such as 5 V, 3300 mV, 12V, or 0.22 kV. Lines without units will be processed using the default source unit, and lines with incorrect formatting will prompt you to check them.

A: When voltage values are very large or very small, scientific notation is easier to read; for example, 0.000001V can be displayed as 1e-6V. You can also choose engineering notation, which makes it easier to correspond with SI prefixes.

A: After entering current I and resistance R, the voltage can be calculated using V=I×R and simultaneously converted to various voltage units. After entering the current voltage, you can also combine it with current or resistance to estimate power.