How do I determine the rank of a journal according to the Journal Impact Factor?

Journals with a Journal Impact Factor (JIF) are listed in the database Journal Citation Reports (JCR) of Clarivate Analytics (formerly at ISI/Thomson Reuters). Each journal is assigned to one or more subject areas (categories). If all journals within a subject area are sorted in descending order according to the impact factor, the rank within a subject area can be specified for a journal.

Since the impact factor is re-determined annually and the list of journals in a subject area can change from year to year, a ranking is specific to a year. If a journal is assigned to more than one subject areas, it has several ranks, one for each subject area.

Rank information usually includes both the rank in absolute numbers (e.g. rank 4 of 121 journals in the subject area) and the quartile in which the journal is located (e.g. quartile 1/Q1).

What is the practical procedure?

Pediatric Diabetes. Two categories?are listed for the journal.

Further down on the page, select the option "Rank" and you will receive a table with the journal's rankings for the individual years and categories. For Pediatric Diabetes this is 2016:

• ENDOCRINOLOGY & METABOLISM: Rank 30 of 138 journals (Quartile 1)
• PEDIATRICS: Rank 4 of 121 journals (Quartile 1)