Hartree-Fock Energy Calculator

Explore Hartree-Fock ground state energies for atoms and understand the mean-field approximation.

C

Carbon

Hartree-Fock Ground State Energy

HF Total Energy

-37.6886 Eh

Hartree atomic units

Hartree

-37.6886

eV

-1025.56

kJ/mol

-98951

kcal/mol

-23650

Energy per Electron

-6.2814 Eh

Correlation Energy (est.)

-0.5653 Eh

Energy Comparison

C vs Ne

ΔE = 90.8585 Eh

(2472.39 eV)

About Hartree-Fock

Hartree-Fock (HF) theory is a mean-field approach where each electron moves in the average field of all other electrons. It captures ~99% of the total energy but misses electron correlation (the instantaneous electron-electron interaction). The correlation energy is the difference between the exact energy and HF energy.

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Editorial Note

MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Chemistry: The Central Science

by Brown, LeMay, Bursten

🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.