Energy Conversion

Energy Conversion Utility

Enter an energy value and select your input unit to instantly convert it to other energy units.

UnitValue
Hartree (Eₕ)
eV (eV)
meV (meV)
kcal/mol (kcal·mol⁻¹)
kJ/mol (kJ·mol⁻¹)
cm⁻¹ (cm⁻¹)
J (J)

Energy Conversion Table

The below table contains multipliers to convert 1 unit in the row to the unit in the column.

From ↓ / To →
HartreeEₕ
eVeV
meVmeV
kcal/molkcal·mol⁻¹
kJ/molkJ·mol⁻¹
cm⁻¹cm⁻¹
JJ
HartreeEₕ
127.211427211.4627.5092625.52194754.35974e-18
eVeV
0.03674931100023.060596.48538065.541.60218e-19
meVmeV
3.67493e-50.00110.02306050.09648538.065541.60218e-22
kcal/molkcal·mol⁻¹
0.00159360.043364143.364114.184349.7556.94770e-21
kJ/molkJ·mol⁻¹
0.000380880.010364310.36430.239006183.59351.66054e-21
cm⁻¹cm⁻¹
4.55634e-60.0001239840.1239840.002859140.011962711.98645e-23
JJ
2.29371e+176.24151e+186.24151e+211.43933e+206.02214e+205.03412e+221

Reference Constants Used

From CODATA 2022:

Other notes:

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