impact factors for IUCr journals

All IUCr Journals are tracked by Thomson Scientific (ISI). A summary of the impact factors for IUCr Journals is given below.

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  2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997
Acta Crystallographica Section A 54.33 49.93 2.051 2.385 1.676 1.791 1.829 1.558 1.417 1.749 1.491 1.601 2.146 1.806
Acta Crystallographica Section B 1.829 1.801 2.341 2.163 2.172 1.910 5.418 3.643 2.026 1.955 1.734 1.700 1.612 1.463
Acta Crystallographica Section C 0.745 0.782 0.561 0.719 0.896 0.777 0.728 0.828 0.659 0.570 0.543 0.581 0.577 0.459
Acta Crystallographica Section D 6.326 2.257 2.943 2.620 1.687 1.401 1.693 2.208 1.760 2.124 3.067 2.935 2.244 2.118
Acta Crystallographica Section E 0.413 0.411 0.367 0.508 0.567 0.581 0.491 0.453            
Acta Crystallographica Section F 0.563 0.551 0.606 0.645                    
Journal of Applied Crystallography 3.794 3.018 3.212 3.629 2.495 5.248 3.534 2.324 1.871 2.583 1.752 1.901 1.569 1.988
Journal of Synchrotron Radiation 2.335 1.994 2.333 2.978 2.38 2.392 1.919 1.144 0.885 1.519 0.924 1.114 1.874 1.688

Impact factors are generally calculated based on a three-year period. For example, the 2010 impact factor for a journal would be calculated as follows:

2010 Impact Factor = A/B

where A = number of times articles published in 2008-2009 were cited in tracked journals during 2010 and B = number of articles published in 2008-2009.