Journal rankings are widely used to indicate an academic journal's quality and impact. Rankings indicate a journal's place and prestige within its field, and rankings may correlate with the difficulty of being published in a journal. They can be used by authors for publication choices.
Journal metrics tools can be used to:
Use these tools to find the impact factor for journal categories or titles:
Journal Websites' Impact Factors. Here's an example for JAMA PEDIATRICS:
Editorial Information. The journal’s acceptance rate is 10%. The median time to first decision is 2 days, and 39 days with review. The journal's Impact Factor is 13.9, the highest-ranking pediatric journal in the world. Additional information on the types of articles published and editorial policies is available in the journal's Instructions for Authors.
Other tools evaluate the influence of scholarly journals:
Eigenfactor Score measures the total influence that a journal has instead of measuring the influence of each article in the journal. It is based on an algorithm that measures the number of times articles from a journal published in the past five years have been cited in the Journal Citation Reports (JCR) each year. Scores are scaled so that the sum of all journal scores is 100. In 2017, PLoS One had the highest Eigenfactor Score of 1.86235. The Eigenfactor uses Thomson Reuters Web of Science citation data and can be found in Journal Citation Reports.
Article Influence Score determines the average influence of a journal's articles and is based on the citations received over a five year period. It also considers which journals have contributed these citations so that highly cited journals will influence the network more than lesser cited journals. The mean Article Influence Score is 1.00. An Article Influence Score greater than 1.00 indicates that the articles in a journal have an above-average influence. It can be found in Journal Citation Reports.