SCImago Journal Rank (SJR) is typically used in an effort to represent the prestige of a journal.
SJRs are a journal level metric.
The SJR (or, more specifically, the SJR2, which is the newer version of the SJR) is calculated by taking the weighted number of citations in a given year to citable publications published in the journal within the 3 preceding years, divided by the total number of citable publications published in the journal within the 3 preceding years. Citations from publications published in more prestigious journals will receive greater weight than those from less prestigious journals, with "prestige" value being dependent on field. The SJR additionally takes into account journal "closeness" via co-citation networks, with citations from "closer" journals receiving greater weight.
For additional information on how the SJR is calculated, see Guerrero-Bote and Moya-Anegón's 2012 article.
Note: SJRs will be based only on citing publications in Scopus (i.e., citations from publications that are not indexed in Scopus will not be factored into SJRs).
For example, The Journal of Fantabulous Examples (JFE) had an SJR of 1.5 in 2020. This would mean that articles published in JFE in 2017, 2018, and 2019 received an average of 1.5 weighted citations in 2020.
SJRs are unique to SCImago and Scopus. You can access SJRs in either of these two sources (with SCImago being publicly accessible).
Finding a journal's SJR in Scopus
Finding a journal's SJR in SCImago
You can access SJRs in one of two ways in SCImago. One method is to:
If you would like to see how your journal ranks with other journals in your field:
Like any impact metric, SJRs have their limitations. Some of these limitations include:
For an overview of how SJR is calculated, see:
For a basic overview of the SJR and the Eigenfactor, see:
For a look into the limitations of the SJR, see:
For a look into journal citation cartels (which can manipulate journal level metrics, including the SJR) see: