You can use Journal Citation Reports (JCR) and SCImago. Please refer to the user guides and tutorials: Journal Rankings · How do I find the Journal Impact ...
The Journal Impact Factor is a single journal-level measurement that should not be considered in isolation. We continue to advise that the JIF is a useful ...
The impact factor is one of these; it is a measure of the frequency with which the “average article” in a journal has been cited in a particular year or period.
As a journal-level metric, it is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factor values ...
The ISI-produced Journal Impact Factor (JIF) is today the common instrument used to evaluate and rank international scientific journals in order to measure ...