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Translation abstract: This contribution relates shrinkage of porous bodies while sintering directly to diminution of internal surface. Based on dilatometric measurements, the kinetic model presented predicts shrinkage for any given temperature‐time history. In addition to the known concept of the master sintering curve (MSC), different powder size distributions, different initial densities and an activation energy varying during the course of sintering can be taken into account. In the early stage of sintering, measured shrinkage differs from values obtained by regression according to the models presented in a systematic manner. The differences are ascribed to transformations occurring before and in the course of sintering. In this case we propose amending of sintering models by incorporating transformations influencing the rate of sintering. [ABSTRACT FROM AUTHOR]