Compare journals

About these values

• OJR and ranks
  The OpenJournalRank Indicator (OJR) is a free, publicly available metric of a journal’s field-normalized citation impact, computed from open OpenAlex citation data. It compares citations to a journal’s papers from the previous three years with the world average for papers of the same subfield, year and type, so 1.00 is the world average and values can be compared across fields. It is computed with the NCI3 method. For 2025 it counts non-self citations to the articles, reviews and conference papers a journal published in 2022–2024. Ranks and quartiles order journals by OJR within the subfield, the field and all journals.
• Impact factor (2-year)
  The Impact factor (2-year) counts citations made in 2025 to the articles, reviews and conference papers a journal published in the two previous years (2023–2024), divided by the number of those papers. Self-citations count; citations from repository-hosted works do not. It is not normalized by field. Clarivate’s Journal Impact Factor™ uses the same basic formula but gives different numbers, and this site does not show it. Clarivate also counts citations to editorials, news and letters while dividing only by articles and reviews. OpenAlex sets document types automatically. The citing data differ: OpenAlex links references for most but not all works, and we leave out repository-hosted citing works. Publication years and snapshot dates also differ. Because of these differences, our value can be higher or lower than the JIF for a given journal, so don’t compare the two directly.
• Change from the previous year
  The change compares the Impact factor (2-year) for 2025 with 2024. Part of a change can come from how completely OpenAlex captured reference lists in each year rather than from the journal.
• Field comparisons
  Each context row compares a journal with the journals of its own field, or of its domain when the field has fewer than 20 eligible journals. The median is the middle value of that group, and the percentile gives the journal’s mid-rank position in it: tied journals share a percentile. The retraction row shows the group’s pooled rate instead of a median. These measures describe a journal; a higher value is not better or worse.
• Highlighted values
  Highlights mark the best value only where a direction is meaningful: OJR, rank positions as a share of the category, the Impact factor (2-year) and articles-only OJR (highest is marked), and APC and retraction rate (lowest is marked).
• Comparing across fields
  OJR and ranks are normalized within each field, but the Impact factor (2-year), document counts and APCs are not. Citation and publishing habits differ between fields: papers in some fields are routinely cited several times as often as papers in others, so a higher raw value in one field does not mean more impact than a lower value in another.

How these values are computed