Convert Electronvolts to Foot-pounds
1 electronvolt (eV) equals 1.181704842 × 10⁻¹⁹ foot-pounds (ft·lbf).
1 eV = 1.181704842e-19 ft·lbf
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk electronvolt to foot-pound converter to paste a column from Excel.
How to Convert Electronvolt to Foot-pound
- 1 eV = 1.181704842 × 10⁻¹⁹ ft·lbf
- 1 ft·lbf = 8.462350028 × 10¹⁸ eV
- Example: convert 15 eV to ft·lbf: 15 eV = 15 × 1.181704842 × 10⁻¹⁹ ft·lbf = 1.772557263 × 10⁻¹⁸ ft·lbf
Formula
ft·lbf = eV × 1.181704841695 × 10⁻¹⁹
or ft·lbf = eV ÷ 8.462350027827 × 10¹⁸
Derivation from SI units:
- 1 eV = e × 1 V = 1.602176634 × 10⁻¹⁹ J (exact since 2019)
- 1 ft·lbf = 0.3048 m × 4.4482216152605 N = 1.3558179483314 J
- 1 eV = 1.602176634 × 10⁻¹⁹ J ÷ 1.355817948331 J per ft·lbf = 1.181704841695 × 10⁻¹⁹ ft·lbf
Both units are defined exactly, so the factor is exact. Electronvolt definition: electronvolt; Foot-pound definition: foot-pound.
Worked examples
- A reading of 1.5 eV converts to 1.772557263 × 10⁻¹⁹ ft·lbf.
1.5 eV × 1.181704842 × 10⁻¹⁹ = 1.772557263 × 10⁻¹⁹ ft·lbf - A value of 13.6 eV is 1.607118585 × 10⁻¹⁸ ft·lbf.
13.6 eV × 1.181704842 × 10⁻¹⁹ = 1.607118585 × 10⁻¹⁸ ft·lbf
Electronvolt to Foot-pound conversion table
| Electronvolts (eV) | Foot-pounds (ft·lbf) |
|---|---|
| 0.025 eV | 2.954262104 × 10⁻²¹ ft·lbf |
| 1 eV | 1.181704842 × 10⁻¹⁹ ft·lbf |
| 1.12 eV | 1.323509423 × 10⁻¹⁹ ft·lbf |
| 1.5 eV | 1.772557263 × 10⁻¹⁹ ft·lbf |
| 2 eV | 2.363409683 × 10⁻¹⁹ ft·lbf |
| 3 eV | 3.545114525 × 10⁻¹⁹ ft·lbf |
| 10 eV | 1.181704842 × 10⁻¹⁸ ft·lbf |
| 13.6 eV | 1.607118585 × 10⁻¹⁸ ft·lbf |
| 100 eV | 1.181704842 × 10⁻¹⁷ ft·lbf |
| 1000 eV | 1.181704842 × 10⁻¹⁶ ft·lbf |
| 1000000 eV | 1.181704842 × 10⁻¹³ ft·lbf |
Where it's used
Electronvolts are used for atomic and particle physics, while foot-pounds appear in muzzle energy of firearms and air rifles. Both measure energy, work and heat, so the conversion is a fixed factor.
Electronvolt to other energy units
| Conversion | 1 eV equals |
|---|---|
| electronvolt to joule | 1.602176634 × 10⁻¹⁹ J |
| electronvolt to kilojoule | 1.602176634 × 10⁻²² kJ |
| electronvolt to megajoule | 1.602176634 × 10⁻²⁵ MJ |
| electronvolt to calorie | 3.829294058 × 10⁻²⁰ cal |
| electronvolt to kilocalorie | 3.829294058 × 10⁻²³ kcal |
| electronvolt to watt-hour | 4.45049065 × 10⁻²³ Wh |
| electronvolt to kilowatt-hour | 4.45049065 × 10⁻²⁶ kWh |
| electronvolt to BTU | 1.518570443 × 10⁻²² BTU |
| electronvolt to therm | 1.518933028 × 10⁻²⁷ thm |
| electronvolt to foot-pound | 1.181704842 × 10⁻¹⁹ ft·lbf |
| electronvolt to erg | 1.602176634 × 10⁻¹² erg |
Frequently asked questions
How many foot-pounds are in 1 electronvolt?
1 eV = 1.181704842 × 10⁻¹⁹ ft·lbf.
How do I convert electronvolts to foot-pounds?
Multiply the value in eV by 1.181704842 × 10⁻¹⁹, or divide it by 8.462350028 × 10¹⁸. For example, 15 eV × 1.181704842 × 10⁻¹⁹ = 1.772557263 × 10⁻¹⁸ ft·lbf.
Is the eV to ft·lbf conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 and the fixed elementary charge e.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot pound-force (ft·lbf)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Electronvolts to Foot-pounds. Retrieved October 17, 2026, from https://scientificconverters.com/energy/electronvolts-to-foot-pounds/
IEEE
Scientific Converters, "Convert Electronvolts to Foot-pounds," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/energy/electronvolts-to-foot-pounds/