⚡ Kelvin to Electronvolt Converter
Convert temperatures from Kelvin (K) to electronvolts (eV). This conversion uses the Boltzmann constant (kB = 8.617333262 × 10⁻⁵ eV/K) and is fundamental in physics, semiconductor technology, and astrophysics.
What Is the Kelvin to Electronvolt Conversion?
The Kelvin to electronvolt conversion is a fundamental operation in physics that relates temperature to energy. It uses the Boltzmann constant (kB), which serves as a bridge between the macroscopic concept of temperature and the microscopic world of particle energies.
This conversion is essential in:
- Semiconductor Physics: Thermal voltage (kBT/q) determines diode behavior.
- Astrophysics: Plasma temperatures in stars and interstellar space.
- Thermodynamics: Statistical mechanics and particle energy distributions.
- Quantum Physics: Energy levels at finite temperatures.
How to Convert Kelvin to Electronvolts
The formula to convert Kelvin to electronvolts is:
E (eV) = T (K) × 8.617333262 × 10⁻⁵
or E (eV) = T (K) / 11,604.525
This works because:
- The Boltzmann constant kB = 8.617333262 × 10⁻⁵ eV/K.
- 1 eV corresponds to a temperature of 11,604.525 K.
For example, to convert 300 K (room temperature) to electronvolts:
E = 300 × 8.617333262 × 10⁻⁵
E = 300 × 0.00008617333262
E = 0.025852 eV
To convert 11,604.525 K (the temperature equivalent of 1 eV) to electronvolts:
E = 11,604.525 × 8.617333262 × 10⁻⁵
E = 1 eV
Why Use This Converter?
- Instant results: Get accurate energy conversions in real-time.
- Step-by-step breakdown: See exactly how the conversion is calculated.
- Common reference table: Quickly check temperatures from 0 K to 100,000 K.
- Free & private: No registration, no data storage , all calculations are done in your browser.
❓ Kelvin to Electronvolt FAQ
What is the formula to convert Kelvin to electronvolts?
The formula is E (eV) = T (K) × 8.617333262 × 10⁻⁵ or E (eV) = T (K) / 11,604.525.
What is the Boltzmann constant in eV/K?
The Boltzmann constant is kB = 8.617333262 × 10⁻⁵ eV/K.
What is the thermal energy at room temperature (300 K)?
At room temperature (300 K), the thermal energy is kBT ≈ 0.025852 eV.
What is 1 eV in Kelvin?
1 eV is equivalent to 11,604.525 K.
What is the conversion from K to meV?
1 K = 0.0862 meV. So multiply Kelvin by 0.0862 to get meV, or by 0.0000862 to get eV.
Where is the Kelvin to eV conversion used?
This conversion is used in semiconductor physics (thermal voltage), astrophysics (stellar temperatures), thermodynamics, and quantum physics.
Who discovered the relationship between temperature and energy?
The relationship is defined by the Boltzmann constant, named after Ludwig Boltzmann, an Austrian physicist who made fundamental contributions to statistical mechanics in the 19th century.
How accurate is this converter?
This converter provides highly accurate results using the CODATA-recommended value of the Boltzmann constant. 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.
What is the difference between electronvolt and volt?
An electronvolt (eV) is a unit of energy equal to the work done to move an electron through a potential difference of 1 volt. A volt (V) is a unit of electrical potential.