A solid-state imaging device includes: a pixel unit in which plural pixels that perform photoelectric conversion are arrayed in a matrix shape; and a pixel-signal readout unit that performs readout of pixel signals from the pixel unit in a unit of plural pixels, the pixel-signal readout unit including an AD conversion unit that performs analog-digital (AD) conversion, wherein the pixel-signal readout unit includes plural comparators that compare a reference signal as a ramp wave and readout analog signal potentials of the pixels in rows in which the comparators are provided, plural counter latches that are arranged to correspond to the plural comparators and capable of counting comparison times of the comparators corresponding thereto, stop the count when outputs of the comparators are inverted, and store values of the count, and an adjusting unit that performs offset adjustment for the reference signal every time the AD conversion is performed.