Impact Factors, Cited References, H-Index and Journal Abbreviations

• Compare Journal Impact Factors within the same subject category
• Click on Category Data for a journal
•   Compare journal impact factor with the Median Impact Factor  the associated subject.

Facts about Impact Factors

• Impact Factors are only calculated for journals (not articles or researchers).
• Impact Factors are calculated by:   
  • selecting a JCR year
  • adding the total # of citations to all items published in the two previous years that were cited in the JCR year
  • divided by the total # of citable items (articles, reviews, and proceedings) published in that two previous years 
• Impact factors are only available from Journal Citation Reports (JCR).
• Not every journal has an impact factor.
  • Only journals indexed ISI Citation Indexes.
• Many subject areas in science and social science are covered in JCR. 

Google Scholar has added a Metrics tool to the site which includes citation count information for many journal titles.  Click here to search Google Metrics by journal title.