Method of calibrating an angular sensor includes a transducer for converting a real value of a physical quantity (φ), lying within an overall range of variations, into an electrical signal (VS1) according to a first predefined function f1(VS1=cos 2φ+OB1) having a factor (OB1) liable to drift according to an external condition, the method including a first step of measuring known values of the physical quantity within the overall range of variations and with at least two values of an external condition, a step of determining a set of correcting parameters, a second step of measuring a known additional value of the physical quantity chosen in a restricted range of variations, and a step of adjusting the set of correcting parameters from the second measurement step.