A method for automatic calibration of dental furnaces wherein, in this method - a dental furnace is provided, said dental furnace comprising a control unit adapted to control the dental furnace for performing a firing process defined by firing process parameters of the dental furnace, - at least one calibration firing-object sample made of a dental material is provided, - a color measuring device is provided which, for transmission of measurement signals or measurement results, is operatively connected to the control unit, - said calibration firing-object sample is subjected to a calibrating firing process with predetermined firing-process parameters in the dental furnace, wherein, after the calibration firing-object process, the calibration firing-object sample has a defined desired color, - the fired calibration firing-object sample is measured by means of the color measuring device, - a target/actual comparison is performed between the defined desired color and the metrologically detected actual color of the fired dental material of the calibration firing-object sample, and - in accordance with a deviation of the actual color from the desired color, the firing temperature is calibrated and the calibrated firing temperature is stored for use under control of the control unit, - wherein, for calibration of the firing temperature, use is made of an automatically readable table containing different values for the firing process temperature and respective values of actual colors assigned to these values, which coordinates have been obtained in preceding tests when firing calibration firing-object samples of substantially identical material properties and geometric shapes with use of the different values for the firing process temperature. - a dental furnace is provided, said dental furnace comprising a control unit adapted to control the dental furnace for performing a firing process defined by firing process parameters of the dental furnace, - at least one calibration firing-object sample made of a dental material is provided, - a color measuring device is provided which, for transmission of measurement signals or measurement results, is operatively connected to the control unit, - said calibration firing-object sample is subjected to a calibrating firing process with predetermined firing-process parameters in the dental furnace, wherein, after the calibration firing-object process, the calibration firing-object sample has a defined desired color, - the fired calibration firing-object sample is measured by means of the color measuring device, - a target/actual comparison is performed between the defined desired color and the metrologically detected actual color of the fired dental material of the calibration firing-object sample, and - in accordance with a deviation of the actual color from the desired color, the firing temperature is calibrated and the calibrated firing temperature is stored for use under control of the control unit, - wherein, for calibration of the firing temperature, use is made of an automatically readable table containing different values for the firing process temperature and respective values of actual colors assigned to these values, which coordinates have been obtained in preceding tests when firing calibration firing-object samples of substantially identical material properties and geometric shapes with use of the different values for the firing process temperature.