SCI Journal

Impact Factor Database


Basic Journal Info


United States
Journal ISSN: 368075
Publisher: American Association for the Advancement of Science
History: 1880-ongoing
Journal Hompage: Link
You can find more information about getting published on this journal here:

Research Categories


Impact Factor


Impact Factor


Impact Factor



Science is a leading outlet for scientific news, commentary, and cutting-edge research. Through its print and online incarnations, Science reaches an estimated worldwide readership of more than one million. Science’s authorship is global too, and its articles consistently rank among the world's most cited research. Science seeks to publish those papers that are most influential in their fields or across fields and that will significantly advance scientific understanding. Selected papers should present novel and broadly important data, syntheses, or concepts. They should merit recognition by the wider scientific community and general public provided by publication in Science, beyond that provided by specialty journals. Science welcomes submissions from all fields of science and from any source. The editors are committed to the prompt evaluation and publication of submitted papers while upholding high standards that support reproducibility of published research. Science is published weekly; selected papers are published online ahead of print.


2-year Impact Factor Trend
Note: impact factor data for reference only


3-year Impact Factor Trend
Note: impact factor data for reference only


4-year Impact Factor Trend
Note: impact factor data for reference only

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 2020 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.

Find out more: What is a good impact factor?
And check out: How to get published in a top science journal?

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Impact Factor History
  • 2019 Impact Factor 21.169
  • 2018 Impact Factor 21.100
  • 2017 Impact Factor 23.925
  • 2016 Impact Factor 21.810
  • 2015 Impact Factor 20.415
  • 2014 Impact Factor 19.166
  • 2013 Impact Factor 18.690
  • 2012 Impact Factor 20.144
  • 2011 Impact Factor 21.592
  • 2010 Impact Factor 20.437
  • 2009 Impact Factor 18.465
  • 2008 Impact Factor 15.629
  • 2007 Impact Factor 15.762
  • 2006 Impact Factor 17.684
  • 2005 Impact Factor 17.534
  • 2004 Impact Factor 17.224
  • 2003 Impact Factor 16.736
  • 2002 Impact Factor 16.250
  • 2001 Impact Factor 15.258
  • 2000 Impact Factor 16.059
Note: impact factor data for reference only

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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.

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The h-index is an author-level metric that attempts to measure both the productivity and citation impact of the publications of a scientist or scholar. The index is based on the set of the scientist's most cited papers and the number of citations that they have received in other publications



SCImago Journal Rank (SJR)

SCImago Journal Rank (SJR indicator) is a measure of scientific influence of scholarly journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from.