Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 eV | 1.519e-30 therm | |
| 0.01 eV | 1.519e-29 therm | |
| 0.1 eV | 1.519e-28 therm | |
| 1 eV | 1.519e-27 therm | |
| 5 eV | 7.594e-27 therm | |
| 10 eV | 1.519e-26 therm | |
| 50 eV | 7.594e-26 therm | |
| 100 eV | 1.519e-25 therm | |
| 1000 eV | 1.519e-24 therm |
Formula: Therm = Electron Volt × 1.5188e-27
Multiply any electron volt value by 1.5188e-27 to get therm.
Reverse: Electron Volt = Therm × 6.5843e26
Common electron volt values — factor: 1 eV = 1.5188e-27 therm
| Electron Volt (eV) | Therm (therm) | Context |
|---|---|---|
| 1 eV | 1.519e-27 therm | Chemical bond |
| 100 eV | 1.519e-25 therm | UV photon |
| 1e+04 eV | 1.519e-23 therm | X-ray photon |
| 1e+06 eV | 1.519e-21 therm | Gamma ray |
| 1.000e+09 eV | 1.519e-18 therm | 1 GeV |
| 1.000e+12 eV | 1.519e-15 therm | 1 TeV |
| 1.000e+15 eV | 1.519e-12 therm | LHC range |
| 1.000e+18 eV | 1.519e-09 therm | Ultra-high cosmic ray |
| 1.000e+21 eV | 1.519e-06 therm | Macro scale |
| 1.000e+24 eV | 0.001519 therm | Millijoule scale |
| 1.000e+27 eV | 1.519 therm | Joule scale |
| 1.000e+30 eV | 1,519 therm | kJ scale |
| 1.000e+33 eV | 1.519e+06 therm | MJ scale |
| 1.000e+36 eV | 1.519e+09 therm | GJ scale |
| 1.000e+40 eV | 1.519e+13 therm | Extreme |
1 eV = 1.5188e-27 therm. Memorize for instant estimates.
Use 1.5188e-27 as a quick mental multiplier.
Multiply result by 6.5843e26 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 therm is a unit of natural gas energy equal to 100,000 BTU (105,480,400 joules). It is the standard billing unit for natural gas in the United States and United Kingdom. The name comes from the Greek thermos (heat).
Gas utilities bill residential and commercial customers in therms in the US and UK. A typical US household uses about 50–100 therms per month in winter. Natural gas furnaces and water heaters are rated in therms per hour.
Interesting fact: One therm of natural gas costs about $1.00–$2.00 in the US. Burning one therm releases about 5.3 kg of CO₂. The US consumes about 28 trillion therms of natural gas equivalent energy per year.
Converting electron volt to therm 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 = 7.5938e-27 therm and 10 eV = 1.5188e-26 therm. Reverse: 1 therm = 6.5843e26 eV. Exact factor: 1 eV = 1.5188e-27 therm.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.