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Measure Your Research Impact-h-index, impact factor and more: Eigenfactor

What is an Eignefactor?

The Eigenfactor is:

  • a metric co-founded by Jevin West and Carl Bergstrom in 2007.

  • measures how many people read a journal and consider its contents importance within the scientific community. It is measured by counting the total number of citations of a journal over a five-year period.

For more information visit

When can you find the Eigenfactor?

The Eigenfactor can now be found in the JCR (Journal Citation Reports) within Web of Science.

Albert wrote an article "Constructions concerting the fundaments of physics" in the journal Science. Let's find out what the most current Eigenfactor is for Science.

  • Go to Web of Science
  • Click on Journal Citation Reports at the top of the screen.
  • In the box next to Journal Profile type in a journal title (in this case Science)
    Choose the name of the journal for the auto populated list.
    Remember some journals do not have this information in JCR for a variety of reasons including newer titles.
  • Click Search.
  • In the results you will see a table. The Eignefactor is listed on the right side of the results.

The Eigenfactor for Albert's publication in Science is 1.15367 for the most current year, 2015

Eignefactor vs Impact Factor

Impact factor measures the popularity of a journal.

Eignefactor measures the prestige of a journal. The Eignefactor takes information over 5 years and doesn't account for the journal size. 

For a more in depth discussion see the Enago blog: Eigenfactor vs. Impact Factor: How are They Different?