# Electronvolt to Joule

Convert electronvolts to joules with configurable precision

> Canonical page: https://elysiatools.com/en/tools/electronvolt-to-joule

- **Category:** Math & Numbers

- **Keywords:** electronvolt, eV, joule, energy, physics, conversion

## Overview

Enter electronvolts and convert with 1 eV = 1.602176634e-19 J. Tiny outputs are preserved in scientific notation-friendly form.

## Inputs

- **Electronvolts** (number): e.g. 1
- **Decimal Precision** (number)

## When to use

- When calculating particle kinetic energy in subatomic physics experiments and needing SI unit equivalents.
- When converting bandgap energy of semiconductors from electronvolts to joules for thermodynamic equations.
- When preparing scientific datasets that require consistent decimal precision and scientific notation formatting for extremely small energy values.

## How it works

- Input the energy value in electronvolts (eV) into the designated field.
- Set the desired decimal precision (up to 20 decimal places) to control the rounding of the output.
- The tool multiplies the input by the constant 1.602176634e-19 to calculate the energy in joules.
- View the output instantly in both standard decimal format and scientific notation.

## Use cases

- Converting ionization energies of elements from eV to Joules for chemical thermodynamics.
- Translating photon energy values in spectroscopy to standard SI units.
- Standardizing energy measurements in academic research papers and physics homework.

## Frequently asked questions

### What conversion factor is used for eV to Joules?

The tool uses the exact standard constant of 1 eV = 1.602176634 × 10⁻¹⁹ Joules.

### Can this tool handle very small or large eV values?

Yes, it outputs results in both standard decimal and scientific notation to prevent loss of precision.

### What is the maximum decimal precision supported?

You can configure the decimal precision up to 20 decimal places.

### Is this converter suitable for quantum mechanics calculations?

Yes, it is designed for physics and chemistry calculations involving subatomic particle energies.

### Do I need to install any software to use this converter?

No, it is a web-based utility that runs directly in your browser.

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