5 Year Impact Factor & Ranking

4.4 3.3 2.2 1.1 4.257 2016 2017 2018 2019 2020 4.257 2016 2017 2018 2019 2020
  • 1 286
    #125
  • 1 189
    #102
  • 1 150
    #71
  • 1 290
    #127
  • 1 188
    #103
  • 1 151
    #71
  • 1 290
    #122
  • 1 189
    #104
  • 1 153
    #72
  • 1 288
    #127
  • 1 190
    #106
  • 1 149
    #71
  • 1 295
    #130
  • 1 191
    #106
  • 1 159
    #78

About 5 Year Impact Factor & Ranking

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

Metrics

Year I.F. Biochemistry & molecular biology Cell biology Immunology
2020 4.257 130/295 106/191 78/159
2019 127/288 106/190 71/149
2018 122/290 104/189 72/153
2017 127/290 103/188 71/151
2016 125/286 102/189 71/150

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.