A method for calibrating a selected clutch arranged within a drivetrain of an agricultural towing vehicle. The selected clutch is activatable between a closed and an open state. The method includes connecting the selected clutch in terms of drive on the drive side to a running drive motor of the agricultural towing vehicle and connecting in terms of drive on the output side to an output shaft, defining the value of a first physical variable bringing about the clutch activation, determining a second physical variable representing the rotation of the output shaft, and assigning the second physical variable representing the rotation of the output shaft to the value of the first physical variable bringing about the clutch activation, in order to generate calibration data of the selected clutch depending on the assignment.