Impact and Metrics: Library Tools and Services

Impact Factors--Journal Citation Reports

Journal impact factors are released annually by Clarivate Analytics distills citation trend data for over 10,000 journals from more than 25 million cited references each year. All journals in the JCR appear in the Web of Science journal citation databases. The Journal Impact Factor gives a measure of the frequency that the average article in a journal has been cited in a particular year or number of years. For more information about how this is done, see the video tutorial below.