Nuclear Binding Energy Calculator

Calculate nuclear binding energy from mass defect using E=mc²

Number of Protons (Z):

Number of Neutrons (N):

Atomic Mass (u):

Common Nuclei

Helium-4: Z=2, N=2

Carbon-12: Z=6, N=6

Oxygen-16: Z=8, N=8

Iron-56: Z=26, N=30

Uranium-235: Z=92, N=143

Uranium-238: Z=92, N=146

Formulas Used

Mass defect: Δm = Z·m_p + N·m_n - M_nucleus

Binding energy: E_B = Δm × c² = Δm × 931.5 MeV/u

1 u = 931.5 MeV/c²