Q. How can I determine the impact factor of a journal?

Try

1. Journal Citation Reports (JCR) within Web of Science  See the Step by step tutorial for how to get the best of JCR

2. Eigenfactor  (ranks and maps scientific knowledge, FREE e-resource from University of Washington) 

STEPS:

• Go to eigenfactor.org
• Search for a single journal name or choose a subject category.
• Select a year.
• Click Search.
• table with numbers should appear

3. SCImago Journal & Country Rank (SJR)
 

STEPS:

• Go to SJR
• Activate link for "Journal Rankings"
• Select Subject Area, e.g., Neuroscience
• Select Subject Category, e.g., Molecular, behavioral, cognitive
• Select other categories as needed and click Refresh.

Definition: Impact factor

One measure of the relative importance of a journal, article or scientist in its field.