Spin-density functional theory is used to calculate the electronic structure of chromium whose ground state is — in separate sets of calculations — assumed to be paramagnetic (P-Cr) (not spin polarized), ferromagnetic (F-Cr) and antiferromagnetic (AF-Cr) (ignoring the spin-density wave). In the self-consistent calculations the magnetic moment of F-Cr is found to converge to zero. The magnetic moment of Af-Cr is found to be 0.59μ B. The total energy favors the antiferromagnetic ground state by 0.06 eV. The equilibrium lattice constant, cohesive energy, bulk modulus, magnetic moment, its pressure derivative, nesting wave vector and its pressure derivative are given and compared with experimental data.