Databases such as Scopus, Web of Science and Google Scholar provide citation counts for individual articles.
Journal-level metrics aim to measure the influence of a journal. There are many journal-level metrics based on different methods of calculation and datasets (see Journal Ranking Indicies box).
World of caution: Be aware of fake impact factors such as Global Impact Factor (GIF), Citefactor and Universal Impact Factor (UIF). These are invented by fake companies for predatory journals that charge a fee for publishing without providing legitimate peer review process.
The Journal Citation Reports (JCR) Database is used to find journal impact factor.
Clarivate Analysis Impact Factor and
Scopus Research Metrics (for Scopus CiteScore, SJR or SNIP)