Impact Factor

The Impact Factor is a statistical measure used to compare journals in a given field. Calculation is based on the average number of times articles published in a journal over the previous two years were cited in the current year.  Impact Factors are calculated for some 7000 journals in many fields and published each year as the Journal Citation Report.

To find the Impact Factor for a journal or group of journals, select Journal Citation Reports from the library databases.

  • Select the relevant edition (Science or Social Science) and year.
  • Mark option to either view a group of subject-related journals, a specific journal title, or all journals.
  • Select or enter criteria on search page (browse and mark a subject category, or enter a specific journal title).
  • The "Journal Summary List" will display title(s) with rank, impact factor, immediacy index, and other criteria.
  • Use the sort function to change from alphabetical to other types of sorting (impact factors, immediacy, number of articles)Use "Help" function (glossary) to see definitions and how values are calculated.

If you do not find the Impact Factor for the journal you are interested in, please contact us at Ask A Librarian.