A liquid level sensing and reporting system for bar keepers is proposed, having a liquid level sensor in wireless communication with a remote computer having software algorithms for calculating and reporting volume. The sensor is substantially in the form of a liquor bottle spout, and includes a means for measuring the height of the liquid in a bottle, sensing inversion of the spout, and sending the data wirelessly to a receiver. The receiver is associated with the computer, and transmits the data to the computer which calculates liquor volumes based on the changing height of the liquid in a bottle from pre-pour to post-pour status. The software extrapolates this information to produce a variety of real-time beverage consumption reports, including error reports caused by over pours, under pours, and skimming.