Journal Metrics measure the influence and research impact of journals. The measures are predominately based on citation counts. Journal metrics are used by researchers to identify the most appropriate and influential journals in which to publish and to track citation patterns to make strategic and funding decisions.
It is important to note that the Journal Impact Factor (JIF) is a journal metric and should not be used to assess individual articles, researchers or institutions. You can read more about the proper use of Journal Impact Factors here.
Scimago Journal & Country Rank is a free source that provides scientific indicators for journals and countries. It is based on information contained in the Scopus database and some Web of Science content from 2018. Use the drop-down menus to focus a subject search. Each title has an individual page with information and related metrics.
The Journal Rank uses the SCImago Journal Rank (SJR).
The Leiden University's Centre for Science and Technology Studies (CWTS) Journal Indicators provides free access to bibliometric indicators on scientific journals. Indicators are available for over 20,000 journals and are based on the Scopus bibliographic database.
CWTS uses the indicator SNIP (Source Normalized Impact per Paper) and IPP (Impact Per Publication).
Google Scholar Metrics is a relatively new service from Google currently covering articles published in the last complete five calendar years. You can browse the top journals published in several languages and explore journals in research areas of your interest.
Journals are ranked by their five year H-index (h5-index, h5-core, and h5-median).