Chiral low-energy constants from lattice QCD

Different strategies for the computation of QCD low-energy couplings by matching lattice results with the chiral effective theory are reviewed. After recalling some relevant predictions from the effective theory, the current status of leading order (Σ,F, Sigma_0,F_0) and next-to-leading order (l_i, L_i) low-energy constants is summarized, focusing on recent results obtained with N_f=2 and N_f=2+1 lattice simulations.