A flow metering system is generally presented herein. The flow metering system is generally configured to measure liquid flow from a liquid dispensing system and to track volume change and other measurable characteristics of the liquid in real time. The flow metering system may include a flow sensor. The flow sensor may be positioned in line with a liquid flow line, or in a separate line where the remainder of the liquid exits via a bypass, where the liquid flow line is connected to and configured to dispense liquid from a pre-packaged liquid volume, or a reservoir. For example, the flow sensor may be connected in-line to a beer line, such as vinyl piping, for a beer keg or soda dispensing tank. However, it will be appreciated that the flow metering system may be used with any type of liquid dispensing system.