Journal impact tools measure the frequency with which the "average article" in a journal has been cited in a particular year or period. There is currently no single platform that indexes all journals across different publishers and disciplines. Use the following tools to identify peer reviewed journals and to review publishers' copyright and self-archiving policies
From the University of Washington, evaluates the influence of scholarly periodicals, maps the structure of academic research, and helps researchers navigate scholarly literature. Search the database for journal and article impact data from 1997 to 2015.
CiteScore is a simple way of measuring the citation impact of sources, such as journals. CiteScore metrics (not CiteScore Tracker metrics) are reported once per year, and do not change, so they are suitable for reporting the citation impact of a serial title. Scopus.com is a dynamic database and changes daily.
The CiteScore metrics are created from a snapshot of Scopus, and represent the relative performance of serial titles at that point in time. The metrics for previous years have been calculated by recreating the Scopus database as it was at a consistent degree of completeness (around 95%) for each year's metrics.