Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 eV | 1.182e-22 ft·lb | |
| 0.01 eV | 1.182e-21 ft·lb | |
| 0.1 eV | 1.182e-20 ft·lb | |
| 1 eV | 1.182e-19 ft·lb | |
| 5 eV | 5.908e-19 ft·lb | |
| 10 eV | 1.182e-18 ft·lb | |
| 50 eV | 5.908e-18 ft·lb | |
| 100 eV | 1.182e-17 ft·lb | |
| 1000 eV | 1.182e-16 ft·lb |
Formula: Foot-Pound = Electron Volt × 1.1816e-19
Multiply any electron volt value by 1.1816e-19 to get foot-pound.
Reverse: Electron Volt = Foot-Pound × 8.4633e18
Common electron volt values — factor: 1 eV = 1.1816e-19 ft·lb
| Electron Volt (eV) | Foot-Pound (ft·lb) | Context |
|---|---|---|
| 1 eV | 1.182e-19 ft·lb | Chemical bond |
| 100 eV | 1.182e-17 ft·lb | UV photon |
| 1e+04 eV | 1.182e-15 ft·lb | X-ray photon |
| 1e+06 eV | 1.182e-13 ft·lb | Gamma ray |
| 1.000e+09 eV | 1.182e-10 ft·lb | 1 GeV |
| 1.000e+12 eV | 1.182e-07 ft·lb | 1 TeV |
| 1.000e+15 eV | 0.0001182 ft·lb | LHC range |
| 1.000e+18 eV | 0.1182 ft·lb | Ultra-high cosmic ray |
| 1.000e+21 eV | 118.2 ft·lb | Macro scale |
| 1.000e+24 eV | 1.182e+05 ft·lb | Millijoule scale |
| 1.000e+27 eV | 1.182e+08 ft·lb | Joule scale |
| 1.000e+30 eV | 1.182e+11 ft·lb | kJ scale |
| 1.000e+33 eV | 1.182e+14 ft·lb | MJ scale |
| 1.000e+36 eV | 1.182e+17 ft·lb | GJ scale |
| 1.000e+40 eV | 1.182e+21 ft·lb | Extreme |
1 eV = 1.1816e-19 ft·lb. Memorize for instant estimates.
Use 1.1816e-19 as a quick mental multiplier.
Multiply result by 8.4633e18 to recover the original eV value.
Works with beam energies, collision products, and mass-energy in eV.
Designs band gap structures — silicon band gap is 1.12 eV.
Selects tube voltage in keV for optimal diagnostic X-ray imaging.
Optimizes solar cell efficiency based on photon energy in eV.
Calculates nuclear binding energies and decay Q-values in MeV.
Measures work function and ionization energy in electron volts.
The electron volt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, equal to approximately 1.602 × 10⁻¹⁹ joules. It was formally adopted as a unit by the IEC in 1930.
Electron volts are the standard energy unit in atomic physics, particle physics, and semiconductor engineering. Chemical bond energies are a few eV; X-ray photons are kiloelectron volts (keV); particle accelerators measure GeV and TeV.
Interesting fact: The Large Hadron Collider accelerates protons to 6.8 TeV (6.8 × 10¹² eV). Visible light photons have energies of 1.8–3.1 eV. The rest mass energy of an electron is 511 keV.
The foot-pound (ft·lb) is an Imperial unit of energy equal to the work done when a force of one pound-force moves an object one foot, equaling 1.35582 joules. It has been used in British and American engineering since the 18th century.
Foot-pounds are standard in US mechanical engineering for torque specifications, engine output (often ft·lb of torque), and ballistic energy measurements. Rifle bullet energies are commonly quoted in foot-pounds in American publications.
Interesting fact: A typical 9mm pistol bullet has about 350 ft·lb of muzzle energy. The torque specification for tightening a car wheel bolt is typically 80–100 ft·lb. One horsepower equals 550 ft·lb per second.
Converting electron volt to foot-pound is common across energy, nutrition, engineering, and science. Different sectors use different energy units — joules in physics, kcal in nutrition, kWh in electricity, and BTU in HVAC — making accurate conversion essential for cross-disciplinary work and international comparisons.
Quick reference: 5 eV = 5.9079e-19 ft·lb and 10 eV = 1.1816e-18 ft·lb. Reverse: 1 ft·lb = 8.4633e18 eV. Exact factor: 1 eV = 1.1816e-19 ft·lb.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.