Top-quark mass at Tevatron and LHC

The top-quark mass measurements carried out by the Tevatron and LHC experiments are sum- marized. Results of different approaches to the top-quark mass reconstruction are presented. Masses from different measurements are in good agreement within uncertainties. Precision of the measurements with the directly measured top-quark mass is now better than 0.5%. Progress in de- termination of the top-quark pole mass is reported and the relation between the directly measured top-quark mass and top-quark pole mass is discussed.