American Association for the Advancement of Science · ISSN 0036-8075 · 0193-4511 · 1095-9203
Science 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: 21.67 citations per paper for Science, retrieved 23 Oct 2026.
Key metrics
- Two-year mean citedness
- 21.67Citations per paper, papers from the two prior yearsSource: OpenAlex
- h-index
- 1,754Across all yearsSource: OpenAlex
- Papers in 2025
- 2,059374,444 in totalSource: OpenAlex
- Access
- SubscriptionOpen-access options may applySource: OpenAlex
Papers per year.
How many works Science published in each complete year, as indexed by OpenAlex.
Fig. 1Works per year from OpenAlex. Retrieved 23 Oct 2026.
What Science publishes.
Mostly Information Systems and Management, History and Philosophy of Science and Political Science and International Relations, within Multidisciplinary.
- Research, Science, and Academia
- History of Science and Medicine
- History of Science and Natural History
- International Science and Diplomacy
- Biographical and Historical Analysis
- Astro and Planetary Science
Most frequent research topics in OpenAlex.
Journals with a similar citation profile.
| Journal | Two-year mean citedness | h-index | Access |
|---|---|---|---|
| Science | 21.67 | 1,754 | Subscription |
| Nature | 19.50 | 1,840 | Subscription |
| Nature Communications | 18.60 | 746 | Open |
| Science Advances | 13.32 | 378 | Open |
| PNAS | 8.95 | 1,167 | Subscription |
About Science.
Comment 1What is the Science 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: 21.67 citations per paper for Science, retrieved 23 Oct 2026.
Comment 2Is Science open access?
Science is not a fully open-access journal; check its author guidelines for open-access options and charges.
Comment 3How many papers does Science publish a year?
OpenAlex records 2,059 works in 2025, and 374,444 in total.
Sources
- 1. OpenAlex source record · retrieved 23 Oct 2026
The Journal Impact Factor is a Clarivate metric and is not reproduced here.