“The Metrics Toolkit is a resource for researchers and evaluators that provides guidance for demonstrating and evaluating claims of research impact.  With the Toolkit you can quickly understand what a metric means, how it is calculated, and if it’s good match for your impact question. The Metrics Toolkit provides evidence-based information about research metrics across disciplines, including how each metric is calculated, where you can find it, and how each should (and should not) be applied.  You’ll also find examples of how to use metrics in grant applications, CVs, and promotion dossiers.” The Toolkit was “developed by a group of information professionals who are passionate about using the best possible evidence for research evaluation.”