JCR – Journal Citation Reports (Web of Knowledge)Databases
Impact factors drawn from over 7.500 journals worldwide from the Science Citation Index and the Social Sciences Citation Index. Journal Citation Reports is a resource for journal evaluation, providing a systematic and objective means of determining the relative importance of science journals within their subject categories.
Enables you to sort journals by journal title or subject category.
You should select the appropriate edition first: Science (default) or Social Sciences, before searching for impact factors.