National Academy of Sciences · ISSN 0027-8424 · 1091-6490
PNAS impact factor, and the open numbers behind it.
Short answer
The Journal Impact Factor is a licensed Clarivate metric, so we do not reproduce it. The closest open equivalent is OpenAlex's two-year mean citedness: 8.95 citations per paper for PNAS, retrieved 23 Oct 2026.
Key metrics
- Two-year mean citedness
- 8.95Citations per paper, papers from the two prior yearsSource: OpenAlex
- h-index
- 1,167Across all yearsSource: OpenAlex
- Papers in 2025
- 4,370173,266 in totalSource: OpenAlex
- Access
- SubscriptionOpen-access options may applySource: OpenAlex
Papers per year.
How many works PNAS published in each complete year, as indexed by OpenAlex.
Fig. 1Works per year from OpenAlex. Retrieved 23 Oct 2026.
What PNAS publishes.
Mostly Genetics, Molecular Biology and Immunology, within Multidisciplinary.
- Bacterial Genetics and Biotechnology
- Genomics and Chromatin Dynamics
- Protein Structure and Dynamics
- RNA and protein synthesis mechanisms
- T-cell and B-cell Immunology
- Neuroscience and Neuropharmacology Research
Most frequent research topics in OpenAlex.
Journals with a similar citation profile.
| Journal | Two-year mean citedness | h-index | Access |
|---|---|---|---|
| PNAS | 8.95 | 1,167 | Subscription |
| Scientific Reports | 5.31 | 462 | Open |
| iScience | 4.85 | 141 | Open |
| Science Advances | 13.32 | 378 | Open |
| PLOS ONE | 3.48 | 594 | Open |
About PNAS.
Comment 1What is the PNAS impact factor?
The Journal Impact Factor is a licensed Clarivate metric, so we do not reproduce it. The closest open equivalent is OpenAlex's two-year mean citedness: 8.95 citations per paper for PNAS, retrieved 23 Oct 2026.
Comment 2Is PNAS open access?
PNAS is not a fully open-access journal; check its author guidelines for open-access options and charges.
Comment 3How many papers does PNAS publish a year?
OpenAlex records 4,370 works in 2025, and 173,266 in total.
Sources
- 1. OpenAlex source record · retrieved 23 Oct 2026
The Journal Impact Factor is a Clarivate metric and is not reproduced here.