5 Year Impact Factor & Ranking

3.0 2.25 1.5 0.75 2.721 2017 2018 2019 2020 2021 2.721 2017 2018 2019 2020 2021
  • 1 290
    #224
  • 1 72
    #50
  • 1 145
    #84
  • 1 290
    #226
  • 1 72
    #49
  • 1 147
    #93
  • 1 288
    #234
  • 1 71
    #50
  • 1 155
    #102
  • 1 295
    #247
  • 1 71
    #53
  • 1 161
    #113
  • 1 293
    #227
  • 1 72
    #47
  • 1 163
    #109

About 5 Year Impact Factor & Ranking

Impact Factor based on 5 years of history. Copyright Clarivate Analytics.

Metrics

Year I.F. Biochemistry & molecular biology Biophysics Chemistry, physical
2021 2.721 227/293 47/72 109/163
2020 247/295 53/71 113/161
2019 234/288 50/71 102/155
2018 226/290 49/72 93/147
2017 224/290 50/72 84/145

Definition

Impact Factor

A base of five years may be more appropriate for journals in certain fields because the body of citations may not be large enough to make reasonable comparisons, or it may take longer than two years to publish and distribute leading to a longer period before others cite the work.

Actual value is intentionally only displayed for the most recent year. Earlier values are available in the Journal Citation Reports from Clarivate Analytics.

ISI ranking

Journals are often ranked by Impact Factor in an appropriate Clarivate Analytics subject category. As there are now two Impact Factors published – two-year and five-year Impact Factors – this rank may differ, so care is needed when assessing these ranked lists to understand which of the two metrics is being used. In addition, journals can be categorized in multiple subject categories, giving them different ranks for each subject. Consequently, a rank should always be in context to the subject category.

other metrics in impact