What is an electron-volt?

An electron-volt is the energy gained by an electron when accelerated through a potential difference of one volt, defined as exactly 1.602176634×10⁻¹⁹ joules.

Why use attojoules instead of electron-volts?

Attojoules express extremely small energy amounts in SI units and are useful for precise measurements at atomic, molecular, and quantum scales.

Can I use this tool for energy units other than eV and aJ?

No. This converter is specifically designed to convert between electron-volts and attojoules only.

Convert Electron-volt [eV] to Attojoule [aJ] Online

Easily convert energy values from electron-volt (eV) units to attojoule (aJ) units with this simple online energy unit converter optimized for atomic, molecular, and quantum scale calculations.

Electron-volt [eV]

Attojoule [aJ]

Please check your input. It must be a valid numeric value.

Electron-volt [eV] to Attojoule [aJ] Conversion Table

Electron-volt [eV]	Attojoule [aJ]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

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Electron-volt [eV] to Attojoule [aJ] Conversion Table
Electron-volt [eV]	Attojoule [aJ]

Explore More Energy Units Converter

What Is This Tool?

This converter transforms energy measurements from electron-volt (eV) units to attojoule (aJ) units. It is ideal for those working with microscopic energy scales such as atomic, photon, or quantum device energies.

How to Use This Tool?

Enter the numerical value in electron-volts (eV) you want to convert.
Select electron-volt as the input unit and attojoule as the output unit if not preselected.
Click the convert button to see the equivalent energy in attojoules (aJ).

Key Features

Converts energy values from electron-volts (eV) to attojoules (aJ) using a precise conversion factor.
Supports energy scale conversions relevant to physics, semiconductor electronics, and quantum technologies.
Browser-based, straightforward interface requiring no installation.
Uses standardized definitions based on SI units and accepted physical constants.

Examples

2 eV is converted to approximately 0.3204353268 aJ.
5 eV converts to roughly 0.801088317 aJ.

Common Use Cases

Describing photon energies and atomic electron excitations in terms of SI energy units.
Analyzing semiconductor band gaps and carrier energies with precise small energy values.
Measuring particle and nuclear reaction energies in physics research.
Quantifying single-photon detector energies and molecular processes in nanoscale devices.

Tips & Best Practices

Confirm the selected units before converting to ensure accuracy.
Use this conversion when working with ultra-small energy values suited to attojoule scales.
Remember that electron-volts remain standard in particle physics despite alternative units.
Consult this tool for quick, browser-based conversions without the need for formulas.

Limitations

Electron-volts are often preferred in atomic and particle physics due to tradition and convenience.
The attojoule unit scale may be too small for many typical energy measurements.
Conversion accuracy depends on the fixed physical constants used for definition.
This tool does not provide unit conversions beyond electron-volts and attojoules.

Frequently Asked Questions

What is an electron-volt?: An electron-volt is the energy gained by an electron when accelerated through a potential difference of one volt, defined as exactly 1.602176634×10⁻¹⁹ joules.
Why use attojoules instead of electron-volts?: Attojoules express extremely small energy amounts in SI units and are useful for precise measurements at atomic, molecular, and quantum scales.
Can I use this tool for energy units other than eV and aJ?: No. This converter is specifically designed to convert between electron-volts and attojoules only.

Key Terminology

Electron-volt (eV): The energy an electron gains after passing through a one-volt electric potential, used in describing atomic and particle energies.
Attojoule (aJ): An SI unit of energy equal to 10^-18 joules, utilized for measuring very small energy quantities in physics and nanoscale science.
Conversion Rate: The fixed factor 1 eV = 0.1602176634 aJ used to change electron-volt values into attojoules.

Quick Knowledge Check

What does 1 electron-volt (eV) equal in attojoules (aJ)?

1.602176634×10⁻¹⁹ aJ

0.1602176634 aJ

10^-18 aJ

Which field commonly uses electron-volts for energy measurement?

Nuclear and particle physics

Macroscopic energy consumption

Mechanical engineering

What is a typical use of attojoules (aJ)?

Expressing extremely small energies at the nanoscale

Measuring household electrical energy

Quantifying large mechanical forces

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