Journals within a specific discipline are often ranked according to their influence and impact. Citations and metrics are the two key elements in current journal ranking schemes. Metrics are calculated from citation data.
The key journal level metrics used for journal ranking are detailed below.
Journals can also be ranked by four quartiles, for example
Find quartile rankings in Scopus and SCImago.
CiteScore is a journal metric created by Scopus in 2016.
CiteScore is based on the number of citations received to documents (articles, reviews, conference papers, book chapters, and data papers) by a journal over four years, divided by the number of the same document types indexed in Scopus and published in those same four years.
On each journal's CiteScore page, you will find the CitatSocre (the current CiteScore year is 2021), CiteScore Tracker 2022 (monthly update for the current year) and CiteScore rank and percentile.
Go to Compare Journals on Scopus, you can compare up to 10 journals using a variety of parameters including CiteScore, SJR and SNIP
SJR is a prestige metric weighted by the prestige of a journal. Citations are weighted depending on where they come from. The number of citations received and the importance or prestige of the journals where such citations come from are used for measuring the influence of the journal. A citation from a high SJR jouranl has more value than a citation from a lower SJR journal.
Subject field, quality and reputation of the journal have a direct effect on the value of a citation. SJR normalises differences of citation behaviour in different subjects.
SNIP (Source Normalized Impact per Paper) measures contextual citation impact by weighting citations based on the total number of citations in a subject field. SNIP is the ratio of a source's average citation count per paper, and the 'citation potential' of its subject field. It aims to allow direct comparison of sources in different subject fields.
Find additional information on the CWTS Journal Indicators website:
Journal impact factor (JIF) or Impact factor (IF) is a widely quoted journal metric.
Journals indexed by Web of Science may provide JIF details on their websites.
The IEEE database also provides JIF metrics for applicable journals.
The Journal Citation Indicator (JCI) is a new metric created by Clarivate.
JCI is the average Category Normalized Citation Impact (CNCI) of citable items (articles & reviews) published by a journal over a recent three year period. The average JCI in a category is 1. A journal with a JCI 1.5 means that this journal has 50% more citation impact than the average in the same category.
The h5-index is the h-index for articles published in the last 5 complete years. It is the largest number h that h articles published in last 5 years have been citated at least h times.
h5-median of a publication - the median number of citations for the articles that make up its h5-index.
For more information see Google Scholar Metrics