Convert megajoule to Hartree energy
Please provide values below to convert megajoule [MJ] to Hartree energy [Eh], or Convert Hartree energy to megajoule.
1 MJ = 2.2937e+23 Eh. To convert megajoule to Hartree energy, multiply the value by 2.2937e+23; to go the other way, divide by it (1 Eh = 4.3597e-24 MJ). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 MJ = 2.2937e+23 Eh
- 1 Eh = 4.3597e-24 MJ
- 10 MJ = 2.2937e+24 Eh
- 100 MJ = 2.2937e+25 Eh
How to Convert Megajoule to Hartree Energy
1 MJ = 2.29371044869059e+23 Eh
Example: convert 15 MJ to Eh:
15 MJ = 15 × 2.29371044869059e+23 Eh = 3.44056567303589e+24 Eh
Megajoule to Hartree Energy Conversion Table
| megajoule | Hartree energy |
|---|---|
| 1 MJ | 2.2937e+23 Eh |
| 2 MJ | 4.5874e+23 Eh |
| 3 MJ | 6.8811e+23 Eh |
| 5 MJ | 1.1469e+24 Eh |
| 10 MJ | 2.2937e+24 Eh |
| 20 MJ | 4.5874e+24 Eh |
| 50 MJ | 1.1469e+25 Eh |
| 100 MJ | 2.2937e+25 Eh |
| 500 MJ | 1.1469e+26 Eh |
| 1000 MJ | 2.2937e+26 Eh |
Megajoule
A megajoule (MJ) is a unit of energy equal to one million joules.
History/Origin
The megajoule was introduced as part of the metric system to measure large amounts of energy, especially in scientific and engineering contexts, aligning with the SI units established in the 20th century.
Current Use
The megajoule is used in fields such as physics, engineering, and energy industries to quantify large energy quantities, including in energy production, consumption, and scientific research.
Hartree Energy
The Hartree energy (Eh) is a unit of energy used in atomic physics, representing the total energy of an electron in a hydrogen atom in its ground state.
History/Origin
Named after the American physicist Douglas Hartree, the Hartree energy was introduced in the early 20th century as a fundamental atomic unit of energy within the system of atomic units, facilitating calculations in quantum mechanics.
Current Use
The Hartree energy is primarily used in theoretical and computational chemistry and physics to express energies at the atomic and molecular scale, especially in quantum chemistry calculations and atomic physics research.
Frequently Asked Questions
What is 1 megajoule in Hartree energy?
1 megajoule (MJ) = 2.2937e+23 Hartree energy (Eh).
How do you convert megajoule to Hartree energy?
Multiply the megajoule value by 2.2937e+23. For example, 25 MJ × 2.2937e+23 = 5.7343e+24 Eh.
What is 10 megajoule in Hartree energy?
10 MJ = 2.2937e+24 Eh.
Which unit is larger, the megajoule or the Hartree energy?
The megajoule is the larger unit: 1 MJ = 2.2937e+23 Eh.