British Thermal Units to Electronvolts Converter

To convert a measurement in british thermal units to electronvolts, multiply the value by 6.585141e+21. The conversion factor comes from the relationship between both units and the joule.

For example, to convert 5 BTU to electronvolts: 5 × 6.585141e+21 = 3.292570e+22 eV.

A British thermal unit (BTU) is the energy needed to raise the temperature of one pound of water by one degree Fahrenheit, about 1,055 joules. The BTU arose from imperial heating and steam engineering. It remains the dominant unit for heating, ventilation, and air-conditioning capacity in the United States, where furnaces and air conditioners are rated in BTU.

Common uses of british thermal units include: Air conditioner and furnace ratings; Heating and cooling load calculations; Natural gas and fuel energy content; HVAC system sizing in the US.

An electronvolt is the energy gained by one electron moving through a potential difference of one volt, equal to about 1.602 × 10⁻¹⁹ joules. The electronvolt became essential in atomic and particle physics, where joules are impractically large. Particle accelerator energies are expressed in mega-, giga-, and tera-electronvolts.

Common uses of electronvolts include: Atomic and particle physics; Semiconductor band-gap energies; Photon and X-ray energy; Chemistry ionization energies.

Here are some common values converted:

1 BTU = 6.585141e+21 eV 5 BTU = 3.292570e+22 eV 10 BTU = 6.585141e+22 eV 50 BTU = 3.292570e+23 eV 100 BTU = 6.585141e+23 eV