How many foot-pounds is 1 electronvolt?

1 electronvolt (eV) equals approximately 1.18171×10⁻¹⁹ foot-pounds force (ft·lbf). This tiny number reflects the enormous difference in scale between atomic-level energies and everyday mechanical energies.

How do I convert eV to ft·lbf manually?

Multiply the electronvolt value by 1.18171×10⁻¹⁹. For example, 1000 eV (1 keV) × 1.18171×10⁻¹⁹ = 1.18171×10⁻¹⁶ ft·lbf. To convert ft·lbf back to eV, divide by the same factor.

What is an electronvolt?

An electronvolt (eV) is the amount of kinetic energy gained by a single electron accelerated through an electric potential difference of one volt. It equals 1.602176634×10⁻¹⁹ joules, defined exactly since 2019 under the SI revision.

What is a foot-pound of energy?

A foot-pound (ft·lbf) is a unit of energy in the US customary system equal to the work done by a one-pound-force acting through a distance of one foot. It equals approximately 1.35582 joules.

Why is the eV-to-ft·lbf ratio so small?

Electronvolts measure atomic-scale energies, while foot-pounds measure mechanical energies on a human scale. A single electronvolt is about 10⁻¹⁹ ft·lbf — it would take roughly 10¹⁹ electrons accelerated through 1 V to produce one foot-pound of energy.

When would I need to convert eV to ft·lbf?

This conversion is mainly needed when bridging atomic physics or photonics calculations with US customary mechanical engineering. Common contexts include radiation shielding design, particle detector calibration, and laser energy output assessment in mixed-unit environments.

Electronvolts to Foot Pounds Converter

Name: Electronvolts to Foot Pounds Converter
Availability: InStock
Author: Nham Vu

Enter energy in electronvolts and get the equivalent in foot-pounds instantly, with reverse conversion included.

Converter

Energy in electronvolts (eV)

Result in foot-pounds (ft·lbf)

Reverse: foot-pounds to electronvolts

Energy in foot-pounds (ft·lbf)

Result in electronvolts (eV)

Reference Table

Electronvolts (eV) Foot-pounds (ft·lbf)

1 eV 1.18171×10⁻¹⁹

10 eV 1.18171×10⁻¹⁸

100 eV 1.18171×10⁻¹⁷

1 keV 1.18171×10⁻¹⁶

10 keV 1.18171×10⁻¹⁵

100 keV 1.18171×10⁻¹⁴

1 MeV 1.18171×10⁻¹³

10 MeV 1.18171×10⁻¹²

1 GeV 1.18171×10⁻¹⁰

1 TeV 1.18171×10⁻⁷

keV = 10³ eV · MeV = 10⁶ eV · GeV = 10⁹ eV · TeV = 10¹² eV

Summary

Enter energy in electronvolts and get the equivalent in foot-pounds instantly, with reverse conversion included.

How it works

Enter the energy value in electronvolts (eV) in the top input field.
The foot-pound result appears instantly with no button press needed.
Use the reverse field to convert foot-pounds back to electronvolts.
Click "Copy" next to any result to copy the value to your clipboard.
Check the reference table for common eV-to-ft·lbf values at a glance.

Use cases

Convert particle physics energy values from eV to ft·lbf for US engineering reports.
Translate photon energy in electronvolts to foot-pounds for optical engineering calculations.
Convert semiconductor band-gap energies from eV to foot-pounds when working with mixed unit systems.
Cross-check nuclear physics collision energies in eV against mechanical energy units.
Verify radiation dosimetry calculations that mix atomic-scale eV with macroscopic energy units.
Convert ion implantation energies from keV or MeV to ft·lbf for materials science work.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu