Journal profile · Multidisciplinary Sciences
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN 0027-8424 · eISSN 1091-6490 · UNITED STATES · Weekly · Founded 1915
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA: CAS Zone 1 · Multidisciplinary (2025 upgraded edition, Top journal); impact factor 9.26; hybrid open access; median 139 days to acceptance (145 articles, last 24 months); community-reported acceptance: about 22.5%; 4,374 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
The Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS), is an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences. The journal is global in scope and submission is open to all researchers worldwide.
From the journal's Aims & Scope
Research area (LetPub): Multidisciplinary Sciences
Main research topics OpenAlex counts of recent articles; shares are approximate
- RNA and protein synthesis mechanismsBiochemistry, Genetics and Molecular Biology9.7%
- Bacterial Genetics and BiotechnologyBiochemistry, Genetics and Molecular Biology5.1%
- Neuroscience and Neuropharmacology ResearchNeuroscience5%
- Monoclonal and Polyclonal Antibodies ResearchMedicine4.6%
- RNA Research and SplicingBiochemistry, Genetics and Molecular Biology4.5%
- Immune Cell Function and InteractionImmunology and Microbiology4.3%
- DNA Repair MechanismsBiochemistry, Genetics and Molecular Biology4.3%
- Photosynthetic Processes and MechanismsBiochemistry, Genetics and Molecular Biology4.2%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Multidisciplinary Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Multidisciplinary | Zone 1 |
| Minor | Multidisciplinary Sciences | Zone 1 |
Top journal: yesReview journal: no
CAS Xinrui Journal Ranking (March 2026)Multidisciplinary Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Multidisciplinary | Zone 1 |
| Minor | Multidisciplinary Sciences | Zone 1 |
Top journal: yesReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Multidisciplinary Zone 1
| Level | Category | Zone |
|---|---|---|
| Major | Multidisciplinary | Zone 1 |
| Minor | Multidisciplinary Sciences | Zone 1 |
Top journal: yesReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 9.26LetPub ·
- CiteScore 2026-06
- 14.7LetPub ·
- SJR 2026-06
- 3.28LetPub ·
- SNIP 2026-06
- 2.38LetPub ·
- h-index
- 699LetPub ·
- h-index
- 1,182OpenAlex ·
- i10-index
- 145,771OpenAlex ·
- 2-year mean citedness
- 8.71OpenAlex ·
- Self-citation rate
- 3.2%LetPub ·
- Share of gold OA articles
- 73.79%LetPub ·
Volume
- Articles per year
- 3,703LetPub ·
Articles by year OpenAlex count · 173,054 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 3,745 | 3,743 | 3,756 |
| 2025 | 4,374 | 4,373 | 29,687 |
| 2024 | 3,973 | 3,973 | 71,863 |
| 2023 | 3,645 | 3,643 | 108,807 |
| 2022 | 3,945 | 3,944 | 159,511 |
| 2021 | 4,211 | 4,196 | 251,300 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
139 daysMedian, submission to acceptance · P25–P75 93 days – 190 days
- Acceptance to online
- median 36 days (145 articles)
- Submission to online
- median 178 days
- Sample
- 145 articles with submission and acceptance dates (9,202 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- about 2.8 monthsLetPub ·
- Average acceptance (community reports)
- 22.5%LetPub ·
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Hybrid open accessLetPub
A subscription journal in which authors can pay to publish their article open access.
No source has fee information yet; check the journal's website.
A hybrid journal charges the APC only when the author chooses open access; publishing under the subscription model is usually free.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Profile
Publication details and official links
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Weekly
- Founded
- 1915
- ISSN
- 0027-8424
- Electronic ISSN
- 1091-6490
- Latest issue on the website
- Volume 123, Issue 36 (September 2026)
- Official links
- Journal homepage ↗LetPub
- Submission system ↗LetPub
- Special issues ↗Publisher website
FAQ
Frequently asked questions about PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
What CAS zone is PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA in?
In the 2025 upgraded edition of the CAS Journal Ranking, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA is in Zone 1 of Multidisciplinary, and in Zone 1 of the minor category Multidisciplinary Sciences; it is a Top journal. In the 2026 Xinrui edition it is in Zone 1 of Multidisciplinary. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA?
The latest impact factor listed by LetPub is 9.26; CiteScore 14.7, h-index 1182.
How long does peer review take at PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA?
Based on the dates recorded on 145 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 139 days (interquartile range 93–190 days); authors report an average review time of about 2.8 months; the community-reported acceptance is “about 22.5%”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Which databases index PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA?
According to LetPub and DOAJ records, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA is indexed in SCIE and Scopus.
Is PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA open access, and what is the APC?
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA is a hybrid journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-26). Last updated: .