Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 eV | 1.518e-25 BTU | |
| 0.01 eV | 1.518e-24 BTU | |
| 0.1 eV | 1.518e-23 BTU | |
| 1 eV | 1.518e-22 BTU | |
| 5 eV | 7.592e-22 BTU | |
| 10 eV | 1.518e-21 BTU | |
| 50 eV | 7.592e-21 BTU | |
| 100 eV | 1.518e-20 BTU | |
| 1000 eV | 1.518e-19 BTU |
Formula: BTU = Electron Volt × 1.5184e-22
Multiply any electron volt value by 1.5184e-22 to get btu.
Reverse: Electron Volt = BTU × 6.5859e21
Common electron volt values — factor: 1 eV = 1.5184e-22 BTU
| Electron Volt (eV) | BTU (BTU) | Context |
|---|---|---|
| 1 eV | 1.518e-22 BTU | Chemical bond |
| 100 eV | 1.518e-20 BTU | UV photon |
| 1e+04 eV | 1.518e-18 BTU | X-ray photon |
| 1e+06 eV | 1.518e-16 BTU | Gamma ray |
| 1.000e+09 eV | 1.518e-13 BTU | 1 GeV |
| 1.000e+12 eV | 1.518e-10 BTU | 1 TeV |
| 1.000e+15 eV | 1.518e-07 BTU | LHC range |
| 1.000e+18 eV | 0.0001518 BTU | Ultra-high cosmic ray |
| 1.000e+21 eV | 0.1518 BTU | Macro scale |
| 1.000e+24 eV | 151.8 BTU | Millijoule scale |
| 1.000e+27 eV | 1.518e+05 BTU | Joule scale |
| 1.000e+30 eV | 1.518e+08 BTU | kJ scale |
| 1.000e+33 eV | 1.518e+11 BTU | MJ scale |
| 1.000e+36 eV | 1.518e+14 BTU | GJ scale |
| 1.000e+40 eV | 1.518e+18 BTU | Extreme |
1 eV = 1.5184e-22 BTU. Memorize for instant estimates.
Use 1.5184e-22 as a quick mental multiplier.
Multiply result by 6.5859e21 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 British Thermal Unit (BTU) is the traditional Imperial energy unit, defined as the heat required to raise 1 pound of water by 1°F. It equals 1,055.06 joules and has been used since the 19th century in heating, air conditioning, and gas billing.
BTU remains dominant in US HVAC: air conditioners and heaters are rated in BTU/hour. Natural gas is priced in therms (100,000 BTU) in the US. Furnaces are rated in BTU/hour output.
Interesting fact: A typical US home furnace is rated at 80,000–120,000 BTU/hour. One BTU is roughly the energy released by burning one kitchen match. The US natural gas pipeline system delivers about 25 quadrillion BTU (quads) per year.
Converting electron volt to btu 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 = 7.5920e-22 BTU and 10 eV = 1.5184e-21 BTU. Reverse: 1 BTU = 6.5859e21 eV. Exact factor: 1 eV = 1.5184e-22 BTU.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.