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PeerJ is Scopus-indexed (Q1, CiteScore 4.9), WoS SCIE, DOAJ. Published by PeerJ Inc..
Checked against the index lists dated .
ISSN 2167-8359Verify ISSN ↗
Publisher: PeerJ Inc.
Cost to publish: Checking DOAJ for article charges…
| Subject area | Rank | Pctile | Q |
|---|---|---|---|
| Medicine (all) | 100 / 669 | 85th | Q1 |
| Agricultural and Biological Sciences (all) | 49 / 235 | 79th | Q1 |
| Biochemistry, Genetics and Molecular Biology (all) | 78 / 223 | 65th | Q2 |
| Neuroscience (all) | 56 / 112 | 50th | Q2 |
Not listed in: ABDC, ABS / AJG, FT50, UT Dallas, ONOS (subscription), ONOS (APC covered)
Yes — actively indexed in Scopus, coverage 2013–present, best quartile Q1, CiteScore 4.9.
PeerJ is Q1 in Medicine (all) (rank 100 of 669), Q1 in Agricultural and Biological Sciences (all) (rank 49 of 235) and Q2 in Biochemistry, Genetics and Molecular Biology (all) (rank 78 of 223), by CiteScore 2025. It is ranked in 4 subject areas in all.
PeerJ is indexed in the Science Citation Index Expanded, so it may have a Journal Impact Factor in Clarivate's Journal Citation Reports. JCR is paid, so check it for the current value. The closest free measure is its Scopus CiteScore 4.9, which places it in quartile Q1 at the 85th percentile of its subject. Its SCImago Journal Rank (SJR, a free Scopus-based metric) is 0.685, quartile Q1, with an H-index of 136.
The publisher lists an article processing charge of about US$1,395 for open access (source: OpenAlex). Many journals also publish by the subscription route at no cost to the author, so confirm on the journal's own website.
PeerJ is published by PeerJ Inc. Its ISSN is 2167-8359.
Yes — indexed in the Science Citation Index Expanded.
Yes — it is an open-access journal, listed in DOAJ.
PeerJ has an h-index of 169 and a 2-year mean of 3.5 citations per paper (OpenAlex). Its Scopus CiteScore is 4.9, quartile Q1. On 2-year citations it ranks #68 of 646 Scopus journals in Medicine (all).
PeerJ published 1,754 papers in 2025; its busiest recent year was 2020 with 2,282. 2026* is the year so far.
h-index, i10-index and 2-year mean citedness are open, licence-clear metrics from OpenAlex — not a proprietary impact factor. The subject rank counts only journals that OpenAlex has a figure for; it is not a Scopus or Clarivate ranking. Updated 2026-10-14.
In its latest 97 research articles (2026), authors are most often from China (40.8%), Türkiye (8.2%) and United States (7.3%).
Countries are counted fractionally, so a paper by authors from two countries counts half to each.
Scopus status: Active. 14 retracted papers are recorded (0.6 per 1,000 papers). The Problematic Paper Screener flags 1 of its papers. These are indicators to check, not findings against the journal.
Retractions from OpenAlex; flags from the Problematic Paper Screener (Cabanac, Labbé & Magazinov, CC BY), 2026-09-21 export. A flag marks a paper for a closer look; it is not a finding against the journal.
Index data is curated from public sources (Scopus, Web of Science, ABDC, FT50, UT Dallas, DOAJ). CiteScore and quartiles reflect the latest available Scopus release. Always verify a journal's current status on its official source before submitting.
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