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You can find impact factors in the Web of Science database. Look for "Journal Citation Reports" along the ribbon at the top of the page.
Web of Science also includes Cited Reference Search, which shows how often a certain article has been cited.
For metrics on how many times an article has been downloaded by readers, see our FAQ answer on "usage factors."
For further information on journal metrics of all kinds, see this helpful guide maintained by Johns Hopkins.
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Our chat reference and Research Appointment Request services are intended for Harvard affiliates. All others are welcome to submit questions using the form on this page.
We are happy to answer questions from all Harvard affiliates and from non-affiliates inquiring about the library's collections.
Unfortunately, we're unable to answer questions from the general public which are not directly related to Harvard Library services and collections.