Bibliometrics & Citation Analysis: Journal
Impact

Journal Citation Reports

JCR includes citation data drawn from approximately 12,000 scholarly and technical journals and conference proceedings from more than 3,300 publishers in over 60 countries. It covers almost all specialities in science, technology, and the social sciences and enables the evaluation and comparison of journals to identify the top ranked and highest impact journals in a particular field. There are two main metrics in JCR:
Journal Impact Factor (JIF)
The journal Impact Factor is the average number of times articles from the journal published in the past two years have been cited in the Journal Citation Reports year
Eigenfactor Metrics
The Eigenfactor Score measures the number of times articles from the journal published in the past five years have been cited in the Journal Citation Reports (JCR) year.

Do you want to find out how journals are selected for inclusion in Web of Science, or would you like to suggest a journal for inclusion? Clarivate Analytics have a webpage with lots of information.

Watch this short video to find out how to search Journal Citation Reports for journals and their Impact Factors within your subject area:

Journal Metrics

Provides three journal metrics using Scopus as a data source. These metrics can be found in Scopus, using the Sources link. 

CiteScore metrics for journals
CiteScore measures average citations received per document published in the serial. Watch this video for more information:

Source Normalized Impact per Paper (SNIP)
Source Normalized Impact per Paper (SNIP) measures contextual citation impact by weighting citations based on the total number of citations in a subject field.

SCImago Journal Rank (SJR)
SCImago Journal Rank (SJR) which is a prestige metric based on the idea that 'all citations are not created equal'. With SJR, the subject field, quality and reputation of the journal have a direct effect on the value of a citation.

If you want to look up the high impact journals in a subject area of your choice in Scopus, watch this short video:

Do you want to find out how journals are selected for inclusion in Scopus, or would you like to suggest a journal for inclusion? Elsevier have a webpage with lots of information. Click here to suggest a new journal.

Google Scholar Metrics

Allows authors to gauge the visibility and influence of recent articles in scholarly publications. The h5-index and the h5-median is displayed for each included publication as well as an entire h5-core of its articles, along with their citation counts.