eV to Ha Converter - Electron Volt to Hartree
Electron Volt (eV) to Hartree (Ha)
Direct answer
1 eV = 0.036749322176 Ha
Ha = eV × 0.036749322176
Converter
Conversion formula
Ha = eV × 0.036749322176
eV = Ha × 27.211386246
Example: 10 eV = 10 × 0.036749322176 = 0.367493221757 Ha.
Common conversion table
| eV | Ha |
|---|---|
| 1 eV | 0.036749322176 Ha |
| 2 eV | 0.073498644351 Ha |
| 5 eV | 0.183746610878 Ha |
| 10 eV | 0.367493221757 Ha |
| 20 eV | 0.734986443513 Ha |
| 50 eV | 1.83746610878 Ha |
| 100 eV | 3.67493221757 Ha |
| 1,000 eV | 36.7493221757 Ha |
Conversion derivation
Express both eV and Ha in the same base unit J (joule), then cancel the shared base unit.
- 1
Rewrite eV in the base unit
- 2
Rewrite Ha in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
eV to Hartree Conversion
This conversion relates two atomic-scale energy units. The electron volt (eV) and the Hartree (Ha) are both used in physics and chemistry to describe energies at the atomic level.
Definition
The electron volt (eV) is the amount of kinetic energy gained by a single electron accelerating through an electric potential difference of one volt. The Hartree (Ha) is the atomic unit of energy, defined as the potential energy of the electron in the first Bohr orbit of a hydrogen atom.
Principle
The conversion factor is derived by expressing both the eV and the Ha in terms of the same base unit, the joule. The ratio of these base-unit definitions yields the conversion factor between the two units.
Assumptions
- The conversion is based on the defined relationships of 1 eV = 1.602176634e-19 joules and 1 Hartree = 4.3597447222071e-18 joules.
- The conversion assumes the use of the standard, defined values for these constants in the SI system.
Cautions
- The provided conversion factor is a precise mathematical ratio of the defined base-unit equivalents.
- Rounding the factor or the result may introduce small numerical discrepancies in calculations.
FAQ
How many Ha are in 1 eV?
1 eV = 0.036749322176 Ha.
How many Ha are in 10 eV?
10 eV = 0.367493221757 Ha.
How many Ha are in 100 eV?
100 eV = 3.67493221757 Ha.
What is the formula to convert eV to Ha?
Use Ha = eV × 0.036749322176.
How many eV are in 1 Ha?
1 Ha = 27.211386246 eV.
What should I check when converting eV to Ha?
Use the conversion factor and round the result to the precision required by your calculation.