A method for converting a capacitance of a precision capacitor for measurement into a digital signal is described. According to a clocking in charging processes an integration capacitor, discharged before the start of conversion, of an integrator circuit is charged by electric current obtained from a charging of the precision capacitor and in discharge processes by brief current surges in the opposite direction which are obtained from a charging of a reference capacitor, with the result that on average no charge builds up, and the number of discharge processes in a particular number of clock pulses is counted. The clocking is paused after a predetermined number of cycles. A residual voltage is converted into a digital value and the counted number of discharge processes and the particular number of clock pulses are combined with the digital value emitted by the analog-to-digital voltage converter to form a digital total result.