How many electronvolts is 1 foot-pound?

1 foot-pound (ft·lbf) equals approximately 8.4622 × 10¹⁸ electronvolts (eV). This large number reflects the vast scale difference: 1 ft·lbf ≈ 1.3558 J, while 1 eV = 1.602176634 × 10⁻¹⁹ J — an atomic-scale unit.

How do I convert foot-pounds to eV manually?

Multiply the ft·lbf value by 8.4622 × 10¹⁸. For example, 2 ft·lbf × 8.4622 × 10¹⁸ = 1.6924 × 10¹⁹ eV. To convert eV back to ft·lbf, divide by 8.4622 × 10¹⁸.

What is an electronvolt?

An electronvolt (eV) is the kinetic energy gained by a single electron accelerating through a one-volt potential difference. It equals exactly 1.602176634 × 10⁻¹⁹ joules, and is the standard energy unit in atomic, molecular, and particle physics.

What is a foot-pound of energy?

A foot-pound (ft·lbf) is the work done when a force of one pound-force acts through a displacement of one foot. It equals approximately 1.3558179483 joules and is common in US mechanical engineering for torque and impact energy.

Why would I convert foot-pounds to eV?

This conversion bridges imperial mechanical engineering (where ft·lbf is standard for torque and impact energy) with atomic and particle physics (where eV is the preferred energy unit). Useful in interdisciplinary work comparing macroscopic energies with bond dissociation energies or photon energies.

How many ft·lbf is 1 eV?

1 eV = 1.602176634 × 10⁻¹⁹ J ÷ 1.3558179483 J/ft·lbf ≈ 1.1817 × 10⁻¹⁹ ft·lbf. A single electronvolt is an extraordinarily small fraction of a foot-pound, illustrating how quantum-scale energies differ from everyday mechanical ones.

Foot Pounds to Electronvolts Converter

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

Enter a value in foot-pounds and get the electronvolt equivalent instantly, with reverse eV-to-ft·lbf conversion and a common reference table.

Converter

Energy in foot-pounds (ft·lbf)

Result in electronvolts (eV)

Reverse: electronvolts to foot-pounds

Energy in electronvolts (eV)

Result in foot-pounds (ft·lbf)

Reference Table

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

0.001 ft·lbf 8.462 × 10¹⁵

0.01 ft·lbf 8.462 × 10¹⁶

0.1 ft·lbf 8.462 × 10¹⁷

1 ft·lbf 8.462 × 10¹⁸

2 ft·lbf 1.692 × 10¹⁹

5 ft·lbf 4.231 × 10¹⁹

10 ft·lbf 8.462 × 10¹⁹

50 ft·lbf 4.231 × 10²⁰

100 ft·lbf 8.462 × 10²⁰

500 ft·lbf 4.231 × 10²¹

1,000 ft·lbf 8.462 × 10²¹

10,000 ft·lbf 8.462 × 10²²

Formula: eV = ft·lbf × 8.4622×10¹⁸ • ft·lbf = eV ÷ 8.4622×10¹⁸

Summary

Enter a value in foot-pounds and get the electronvolt equivalent instantly, with reverse eV-to-ft·lbf conversion and a common reference table.

How it works

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

Use cases

Convert muzzle energy (ft·lbf) to electronvolts for comparison with atomic-scale phenomena.
Translate mechanical energy from engineering specs to the eV scale used in particle physics literature.
Cross-check energy scales between imperial mechanical data and atomic or molecular physics.
Compute the eV equivalent of kinetic energy values expressed in foot-pounds.
Understand the scale difference between everyday mechanical energy and atomic-bond energies for education.
Verify unit conversions in interdisciplinary research combining classical mechanics and quantum physics.

Frequently Asked Questions

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