W mass: a theory overview

The measurement of the W boson mass represents a very important test for the internal consistency of the standard model of particle physics, and could also possibly highlight signals of New Physics. We provide a concise theory overview on the topic, presenting the typical measuring strategies, the known perturbative and non-perturbative theoretical ingredients used to predict the relevant observables, the treatment of theoretical systematics in recent experimental measurements and some future prospects to reduce modelling uncertainties.