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Jorge Hirsch proposed the h-index or Hirsch index in 2005 as a means of quantifying the impact and productivity of a scientist. The h-index is calculated on the number and impact of a researcher’s publications.  An h-index of 40 means that a researcher has published 40 papers that each have at least 40 citations. 

Several resources - Web of Science Citation Indexes, Scopus, Google Scholar (via 'Google Scholar Citations' and 'Publish or Perish') and Microsoft Academic Search - include the necessary citation data to calculate a h-index score.

You can also calculate your own h-index if you have a complete list of publications ranked by citation number

Rank your papers from highest cited to lowest, where h=<h

The h-index of an author will be different in each of these resources, since the calculation is based on the indexed content within each resource.

Web of Science | Scopus | Google Scholar

Web of Science


Web of Science includes the Science Citation Index; Social Sciences Citation Index; Arts & Humanities Citation Index; Conference Proceedings Citation Index- Science; Conference Proceedings Citation Index- Social Science & Humanities

  • Enter the name of the author in the top search box (e.g. Smith JT).   Select Author from the drop-down menu on the right.
    To ensure accuracy for popular names, enter Univ Illinois in the middle search box, then select “Address” from the field drop down menu on the right.
  • Click on Search
  • Click on Citation Report on the right hand corner of the results page, the H-index is on the right of the screen



Scopus - an abstract and citation database for scientific, technical, medical and social sciences literature including arts & humanities.

  • Once in Scopus, click on the Author search tab.
  • Enter the name of the author in the search box.  If you are using initials for the first and/or middle name, be sure to enter periods after the initials (e.g. Smith J.T.). 
  • To ensure accuracy if it is a popular name, you may enter University of Illinois in the affiliation field.  
  • Click search.
    • If more than one profile appears, click on your profile (or the profile of the person you are examining).  Under the Research section, you will see the h-index listed.
    • If you have worked at more than one place, your name may appear twice with 2 separate h-index ratings.  Select the check box next to each relevent profile, and click show documents.

Tutorials and Guides

Google Scholar

Using your google (gmail) account, create a profile of all your articles captured in Google Scholar.  This will show all the times the articles have been cited by other documents in Google Scholar.  Its your choice whether you make your profile public or private but when you make it public, you can link to it from other webpages.

See Albert Einstein's Google Scholar profile.

Tutorials and Guides

Google Scholar Citations Guide