Researchers do not have impact factors, but journals do!
The impact factor of an academic journal is a measure reflecting the average number of citations to recent articles (2-3 years) published in that specific journal. It is often used as a metric for the relative importance and/or impact of a journal within its field.
Flow chart created by Hanna Schmillen, 2014.
Scopus CiteScore will tell you the number of citations in a journal in the current year in relation to all the documents published in that journal in the prior thee years. It represents the average number of citations that a given document (article, book series, conference proceeding, letter, etc) in a three year period. The Source Details screen on Scopus displays how the score for the individual journal is calculated.
Cabell's Scholarly Analytics provides information about some journals' acceptance rates, peer review method, the amount of time the review takes and how many reviewers are involved. Further, it includes the scite Index (SI) measurements which is calculated using the following formula: # supporting cites/ # supporting sites + # contrasting cites. Additional information includes the impact factor from Journal Citation Reports, the level of open access, and an “Altmetric Report” that includes social media and other internet activity.
Google Scholar's Metrics will tell you about impact factors among other bibliometric information. On the main page of Metrics, you can search by field or specific journal. There is also a listing of top journals based on the h5-index and median.
The H5-index is created by Google Scholar, and is similar to the h-index explained in Author-level Metrics.
H5-index "It is the largest number h such that h articles published in [the past 5 years] have at least h citations each". Thus, an H5-index of 60 means that that journal has published 60 articles in the previous 5 years that have 60 or more citations each.
H5-median is based on H5-index, but instead measures was the median (or middle) value of citations is for the h number of citations. A journal with an H5-index of 60 and H5-median of 75 means that, of though 60 articles with 60 or more citations, the median of those citation values is 75.
To the right is a chart listing the top 20 English-language journals ranked by the H5-index.
Both the H5-index and H5-median are available in Google Scholar Metrics. Journals can be browsed by discipline (more information about disciplines is available in Journal Rankings) or searched by keyword.
Google Scholar Metrics will only display the top 20 journals for each subject category. Additionally, there is no historical data.