Voltage Converter

Convert between voltage units including volts, millivolts, kilovolts, megavolts, and more.

1 V =

1,000

Millivolt (mV)

1 V in all units

Volt (V)1
Millivolt (mV)1,000
Microvolt (uV)10,00,000
Nanovolt (nV)1.000000e+9
Kilovolt (kV)0.001
Megavolt (MV)0.000001
Gigavolt (GV)1.000000e-9
Statvolt (statV)0.003336
Abvolt (abV)10,00,00,000

Quick Reference

1 Volt

= 1,000 mV

1 kV

= 1,000 V

US Household

120 V / 240 V

Power lines

110-765 kV

What Is the Voltage Converter?

The Voltage Converter helps you convert voltage units such as volts, millivolts, microvolts, kilovolts, and megavolts without manually repeating the same unit math. It is designed for quick lookup, but the result is still transparent because the content below explains exactly how the page calculates its outputs.

Use it when you need a reliable online converter for copying results into notes, technical documents, planning sheets, or debugging work. The key is to enter the value in the same unit used by your source data and then read the equivalent units shown by the calculator.

Voltage Converter Formula

The page stores each voltage unit as a factor relative to one volt. To convert, it multiplies the entered value by the source unit factor to get volts, then divides by the target unit factor. This same normalized volt value is also used to build the all-conversions table, so every displayed unit is derived from one consistent base.

Voltage Converter Formula

volts = value * fromUnit.factor; result = volts / toUnit.factor

Where:

  • value= The number typed into the converter
  • fromUnit.factor= How many volts equal one source unit
  • toUnit.factor= How many volts equal one target unit
  • result= Converted voltage in the selected target unit

Understanding the Results

Results are easiest to understand when you separate the input value, the base unit, and the display unit. The calculator does not change the physical quantity; it changes only the unit label and numeric scale.

StepWhat to CheckWhy It Matters
InputConfirm the original value and unit.A correct conversion starts with the correct source unit.
FormulaNormalize to the base unit when needed.This prevents mixed-unit mistakes.
OutputRound only after the conversion is complete.Early rounding can change small or large results.

How to Use This Calculator

Start by entering the value shown in your source material. Choose the matching input unit or mode, then review the converted output. For technical work, copy the result with its unit instead of copying the number alone.

  1. Enter the value: Use the same number and unit from your source.
  2. Select the conversion: Choose the source and target unit, or pick the encoding/decoding mode shown on the page.
  3. Review the result: Check the converted number, unit label, and any extra outputs such as totals, byte length, or file size.

Real-World Applications

This voltage converter is useful in everyday tasks and professional workflows. Students can use it to check homework or lab notes, developers can verify data formats and technical units, and creators can compare specifications before publishing or sharing work.

It is also helpful when different sources use different conventions. A single project may mention metric units, imperial units, storage-style units, or scientific notation. Converting them into a common scale makes comparison faster and reduces avoidable mistakes.

Worked Examples

Convert volts to millivolts

Problem:

Convert 1 V to mV.

Solution Steps:

  1. 1Step 1: The source factor for V is 1, so volts = 1 * 1 = 1 V.
  2. 2Step 2: The target factor for mV is 0.001 V.
  3. 3Step 3: result = 1 / 0.001 = 1000 mV.

Result:

Result: 1 V equals 1000 mV.

Convert kilovolts to volts

Problem:

Convert 2.5 kV to V.

Solution Steps:

  1. 1Step 1: The source factor for kV is 1000.
  2. 2Step 2: volts = 2.5 * 1000 = 2500 V.
  3. 3Step 3: The target factor for V is 1, so result = 2500 / 1.

Result:

Result: 2.5 kV equals 2500 V.

Convert microvolts to volts

Problem:

Convert 500000 µV to V.

Solution Steps:

  1. 1Step 1: The source factor for µV is 0.000001.
  2. 2Step 2: volts = 500000 * 0.000001 = 0.5 V.
  3. 3Step 3: Convert to V by dividing by 1.

Result:

Result: 500000 µV equals 0.5 V.

Tips & Best Practices

  • Check whether your source uses V, mV, or µV before entering the value.
  • Use scientific notation for very small or very large readings when needed.
  • Do not confuse voltage conversion with transformer or power-supply conversion.
  • Keep significant figures consistent with your measurement instrument.
  • Use kilovolts for high-voltage systems and millivolts for sensor signals.
  • Verify decimal placement when moving between microvolts and volts.

Frequently Asked Questions

A voltage converter changes a voltage value from one unit scale to another, such as volts to millivolts or kilovolts to volts. It is useful for electronics, sensors, power systems, and lab measurements.
No. It only converts the unit used to express electric potential difference. It does not convert a device from one supply voltage to another or calculate wattage.
Using volts as the base unit keeps every conversion consistent. The page converts the input to volts and then divides by the target unit factor.
Millivolts and microvolts are common for small signals, sensors, and measurement equipment. They make tiny voltages easier to read without many leading zeros.
Kilovolts and megavolts are used for high-voltage power transmission, insulation ratings, and physics applications. They keep very large voltage values readable.

Sources & References

Last updated: 2026-06-06

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

Source

Formula Source: NIST Guide to SI Units

by National Institute of Standards

UpdatedLast reviewed: May 2026
CheckedFormula checks are based on standard references and internal QA review.