In nuclear physics, energy is often expressed in electronvolt and multiples thereof (kiloelectronvolt or keV). As a result of popular misuse of language, temperature is sometimes also indicated in keV. The conversion factor which converts from electronvolt to Kelvin is as follows: 1 electronvolt = 11600 K.

10 keV = 10 * 1000 eV or around 100 million degrees