With the recent release of the Green House Gas Regulations, the increased visibility of flaring natural gas and increased awareness of royalty owners, the ability to accurately measure and account for the amount of product flared from a facility has become increasingly important to regulators, royalty owners and operators. In the past, flare gas was not considered a necessary measurement, so the measurement of flared product has often been overlooked or not given the same attention as custody transfer measurement. As such API published API MPMS Chapter 14.10, Measurement of Flow to Flares, in June of 2007. This paper will provide a quick overview of the contents of API MPMS 14.10 but is encouraged to obtain 14.10 if more detailed information is desired. In addition, a brief discussion on the importance of calibrating flare flow meters is also discussed.