Health literacy continues to experience the normal growing pains of an emerging field of inquiry and practice. The evolving concept of health literacy requires the development of new measurement tools to adequately study interventions and identify best practices. This article describes a multistage process of engaging the largest known international group of health literacy professionals in an online discussion about health literacy measurement. The goal was to gather input and identify important themes in the discussion using both quantitative and qualitative evaluation methods to gauge the strength of any consensus about health literacy measurement and start to identify topics that should be considered and addressed by those working to develop new tools to measure health literacy.