⚛️ Electronvolt to Kelvin Converter
Convert energy in electronvolts (eV) to the equivalent temperature in kelvin (K). This conversion uses the Boltzmann constant (kB = 8.617333262 × 10−5 eV/K), where 1 eV = 11,604.518 K. Widely used in plasma physics, astrophysics, and semiconductor engineering.
What Is an Electronvolt?
An electronvolt (eV) is a unit of energy equal to the amount of kinetic energy gained by a single electron when it accelerates through an electric potential difference of one volt. It is a very small unit of energy: 1 eV ≈ 1.602 × 10⁻¹⁹ J.
The electronvolt is widely used in atomic physics, particle physics, plasma physics, astrophysics, and semiconductor engineering. In these fields, energies are often more conveniently expressed in electronvolts than in joules.
How to Convert Electronvolts to Kelvin
The conversion between energy (in eV) and temperature (in K) is based on the Boltzmann constant:
T (K) = E (eV) / kB
where kB = 8.617333262 × 10−5 eV/K
This simplifies to: T = E × 11604.518
The relationship E = kB × T arises from statistical mechanics, where the average thermal energy of a particle in a system at temperature T is proportional to T.
For example, to convert 1 eV to kelvin:
T = 1 / (8.617333262 × 10−5)
T = 1 × 11604.518
T = 11,604.518 K
Why Use This Converter?
- Instant results: Get accurate energy-to-temperature conversions in real-time.
- Step-by-step breakdown: See exactly how the conversion is calculated.
- Common reference table: Quickly check conversions from 0.001 eV to 10,000 eV.
- Free & private: No registration, no data storage , all calculations are done in your browser.
❓ Electronvolt to Kelvin FAQ
What is the formula to convert electronvolts to kelvin?
The formula is T (K) = E (eV) / kB, where kB = 8.617333262 × 10−5 eV/K. This simplifies to T = E × 11604.518.
What is the Boltzmann constant?
The Boltzmann constant (kB or k) is a fundamental physical constant that relates the average kinetic energy of particles in a gas to the temperature of the gas. Its value in electronvolts per kelvin is 8.617333262 × 10−5 eV/K.
Is the electronvolt a temperature unit?
No, the electronvolt (eV) is a unit of energy, not temperature. However, in plasma physics, astrophysics, and semiconductor engineering, it is routinely used as a temperature unit by applying the Boltzmann constant.
What is the value of 1 eV in kelvin?
1 eV = 11,604.518 K. This means that a particle with a thermal energy of 1 eV has the same average kinetic energy as particles in a gas at approximately 11,605 K.
What is the thermal energy at room temperature in eV?
At room temperature (300 K), the thermal energy kB×T is approximately 0.02585 eV (about 1/40 of an electronvolt).
What is the relationship between eV and temperature?
The relationship is E = kB × T, where E is the thermal energy in electronvolts, kB is the Boltzmann constant, and T is the absolute temperature in kelvin.
Where is the eV-to-K conversion used?
This conversion is used in plasma physics (e.g., fusion research, tokamaks), astrophysics (e.g., solar corona, stellar cores), and semiconductor engineering (e.g., thermal voltage, bandgap energies).
Is the Boltzmann constant exact?
Yes, the Boltzmann constant was fixed to an exact value (1.380649 × 10⁻²³ J/K) by the 2019 redefinition of SI units. In electronvolt units, this gives 8.617333262 × 10⁻⁵ eV/K.
How accurate is this converter?
This converter provides highly accurate results using the standard formula T = E × 11604.518. You can adjust the decimal precision to suit your needs.
Is this converter free?
Yes, this converter is completely free to use. No registration or personal data storage is required.