居里-韦斯定律为居里定律的修正公式，用来补足该公式的不足。当一物质的温度大于居里温度(${\displaystyle T_c}$ the magnetization (magnetic moment per unit volume), =₀ is the magnetic field, and the material-specific Curie constant:

where _B is Boltzmann's constant, the number of magnetic atoms (or molecules) per unit volume, the Landé g-factor, _B the Bohr magneton, the angular momentum quantum number.

For the Curie-Weiss Law the total magnetic field is where is the Weiss molecular field constant and then

which can be rearranged to get

which is the Curie-Weiss Law

where the Curie Temperature _C is