E-Resource of the Month: SCImago Journal Ranking (SJR)
Trying to figure out which journal to publish in? SCImago Journal Ranking (SJR) can help you decide!
SJR is based on prestige from a journal to another, using current year citations to the source items published in that journal during the previous three years. SJR, a counterpart to Impact Factors, is freely available through the SCImago website. Find out more information on the Impact Factors and Other Metrics libguide.
Quick view of Impact Factor vs SJR:
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Impact Factor |
SJR |
Definition |
Citations to a journal in the JCR year to items published in the previous two years, divided by the total number of citable items (articles and reviews) published in the journal in the previous two years. |
Average number of weighted citations received in a year, by articles published in a journal in the previous 3 years. |
Source |
InCites Journal Citation Reports (JCR) – drawing on the data in Web of Science |
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A measure of |
Citation Impact |
Prestige |
Availability |
Subscription access via JCR |
Freely available via SCImago website |
Journal titles |
11,500+ |
34,000+ |
How is it calculated? |
The number of citations of articles published in the source journal in the preceding two years divided by the number of items published in that journal in the previous two years. |
Iterative process based on transfer of prestige from a journal to another, using current year citations to the source items published in that journal during the previous three years |
Citations included |
All document types (including editorials) |
Articles, conference papers and reviews |
Documents included |
Articles and reviews |
Articles, conference papers and reviews |
Interdisciplinary comparisons |
Not useful for comparing disciplines. You should only compare Impact Factors for journals in the same field. |
Yes. The rank has been normalized to account for differences between the disciplines |
Strengths |
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Weaknesses |
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