According to the Journal Citation Reports, its 2011 impact factor is 2.077, ranking it 6 out of 72 journals in the category "Communication".

According to the Journal Citation Reports, its 2010 impact factor is 2.155, ranking it 5 out of 87 journals in the category 'Engineering'.

According to the Journal Citation Reports, its 2011 impact factor is 0.242, ranking it 31 out of 55 journals in the category "History".

According to the Journal Citation Reports, its 2010 impact factor is 1.091, ranking it 18 out of 67 journals in the category 'Communication'.

According to the Journal Citation Reports, its 2010 impact factor is 3.309, ranking it 23 out of 77 journals in the category 'Psychology'.

According to the Journal Citation Reports, its 2010 impact factor is 0.833, ranking it 69 out of 101 journals in the category 'Business'.

This ranks Malacologia 66th out of 145 listed journals in the category "Zoology".

In 2005, the journal was rated 11th out of 94 peer-reviewed psychiatric journals with an impact factor of over 4.8.

The JCR impact factor for 2009 is 1.8, 66th out of 95 journals in the Microbiology subject category.

According to the Journal Citation Reports, its 2010 impact factor is 1.206, ranking it 71 out of 140 journals in the category "Management".