A liquid ejecting apparatus includes an ejection portion and a circuit. The ejection portion has a plurality of ejection ports configured to eject liquid supplied from a liquid storage portion defining a liquid storage space configured to store liquid. The circuit is electrically connected to at least one of a bottom electrode and a side electrode. The circuit is configured to detect a capacitance between the bottom electrode and the side electrode. The bottom electrode is provided at a bottom surface of the liquid storage portion. The side electrode is provided at one side surface of the liquid storage portion and electrically isolated from the bottom electrode.