Convert Electronvolts to Inch-Pound-Force
Convert Electronvolts (eV) to Inch-Pound-Force (in·lbf) instantly and accurately.
Conversion Formula
in·lbf = eV × 1.418045810e-18
About Electronvolts
An electronvolt (eV) is the kinetic energy gained by one electron accelerated through 1 volt - exactly 1.602176634 × 10⁻¹⁹ J (fixed by the 2019 SI revision). It is the natural energy unit of atomic and particle physics: visible light photons carry 1.7-3.1 eV; hydrogen ionisation requires 13.6 eV; X-ray photons span 100 eV-100 keV; protons at the LHC reach 6.5 TeV. Rest masses use eV/c²: electron 0.511 MeV, proton 938.3 MeV, Higgs boson 125 GeV. Nuclear binding energy peaks at ~8 MeV/nucleon for iron-56. 1 eV = 1.602176634 × 10⁻¹⁹ J.
About Inch-Pound-Force
An inch-pound-force (in·lbf) is the work done by one pound-force through one inch - exactly 0.11298482902761670 J (= 1/12 ft·lbf). It is the dominant torque unit for small fasteners and precision instruments in the US: a #6-32 screw in aluminium is torqued to 4-6 in·lbf; a dental implant abutment screw to ~25-30 Ncm (2.2-2.7 in·lbf). Hobby servo motor torque is quoted in oz·in (1 in·lbf = 16 oz·in). Bicycle stem bolts are typically 4-6 Nm (35-53 in·lbf). 1 in·lbf = 0.11298 J = 1/12 ft·lbf = 11.298 Ncm.
Quick Reference Table
| Electronvolts (eV) | Inch-Pound-Force (in·lbf) |
|---|---|
| 1 eV | 1.418 × 10-18 in·lbf |
| 2 eV | 2.836 × 10-18 in·lbf |
| 5 eV | 7.09 × 10-18 in·lbf |
| 10 eV | 1.418 × 10-17 in·lbf |
| 25 eV | 3.545 × 10-17 in·lbf |
| 50 eV | 7.09 × 10-17 in·lbf |
| 100 eV | 1.418 × 10-16 in·lbf |