Impact Factor 2024-2025
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
9.1
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Basic Journal Info
| Country: | United States |
|---|---|
| Journal ISSN: | 0027-8424 |
| Journal EISSN: | 1091-6490eissn |
| History | 1949-1951, 1961-ongoing |
| Publisher | NATL ACAD SCIENCES |
| Journal Hompage: | Link |
| Note: |
Research Categories
MultidisciplinaryImpact Factor Ranking
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
665
Scope/Description:
PNAS is one of the world"s most-cited multidisciplinary scientific serials. Since its establishment in 1914, it continues to publish cutting-edge research reports, commentaries, reviews, perspectives, colloquium papers, and actions of the Academy. Coverage in PNAS spans the biological, physical, and social sciences. PNAS is published weekly in print, and daily online in PNAS Early Edition. The PNAS impact factor is 9.38 and the Eigenfactor is 1.7 for 2008. PNAS is available by subscription.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | Journal Impact factor 2025 Trends
Impact Factor Trend 2000 - 2025
Impact Factor
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric factor based on the yearly average number of citations on articles published by a particular journal in the last two years. In other words, the impact factor of 2024 - 2025 is the average of the number of cited publications divided by the citable publications of a journal. A journal impact factor is frequently used as a proxy for the relative importance of a journal within its field. Normally, journals with higher impact factors are often deemed to have more influence than those with lower ones. However, the science community has also noted that review articles typically are more citable than research articles.Here you can check the journal performance trends based on last 20 years of data, also check the latest journal citation reports 2025. Also Check H-Index, SCImago journal rank and journal impact factor 2025.
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Impact Factor History
- 2024/2025 Impact Factor 9.1
- 2023 Impact Factor 9.4
- 2022 Impact Factor 11.1
- 2021 Impact Factor 12.779
- 2020 Impact Factor NA
- 2019 Impact Factor 9.58
- 2018 Impact Factor 9.346
- 2017 Impact Factor 9.8
- 2016 Impact Factor 10.16
- 2015 Impact Factor 10.439
- 2014 Impact Factor 10.71
- 2013 Impact Factor 10.938
- 2012 Impact Factor 10.984
- 2011 Impact Factor 10.694
- 2010 Impact Factor 10.552
- 2009 Impact Factor 9.449
- 2008 Impact Factor 9.299
- 2007 Impact Factor 9.64
- 2006 Impact Factor 9.949
- 2005 Impact Factor 11.065
- 2004 Impact Factor 10.972
- 2003 Impact Factor 10.702
- 2002 Impact Factor 11.116
- 2001 Impact Factor 11.008
- 2000 Impact Factor 10.782
Note: impact factor data for reference only
Other Journal Impact Indicator
Any journal impact factor or scientometric indicator alone will not give you the full picture of a science journal. That’s why every year, scholars review current metrics to improve upon them and sometimes come up with new ones. There are also other factors to sider for example, H-Index, Self-Citation Ratio, SJR (SCImago Journal Rank Indicator) and SNIP (Source Normalized Impact per Paper). Researchers may also consider the practical aspect of a journal such as publication fees, acceptance rate, review speed.