Journal Quartiles Explained: What Q1–Q4 Really Mean
A quartile is a journal’s rank among other journals in its own field. Every journal in a subject category is sorted by a citation metric and split into four equal groups: the top 25% is Q1, the next quarter Q2, then Q3 and Q4. So “Q1” means the journal sits in the top quarter of its category — not that it outranks every Q2 journal in every other field.
How a quartile is calculated
Two major databases publish quartiles, and they do not always agree:
- JCR (Journal Citation Reports, from Clarivate) sorts journals in each subject category by Impact Factor.
- Scopus / SJR (SCImago Journal Rank) sorts by the SJR indicator, which also weights how prestigious the citing journal is.
That is why one journal can be Q2 in JCR and Q1 in Scopus. Whenever you see “Q1”, the right first question is: Q1 in which database, and in which subject category?
A journal can belong to several subject categories and hold a different quartile in each. It is common to advertise the best one. For a fair assessment, look at the category closest to your paper’s topic.
Where to look up a specific journal
- The journal’s own site, under About or Journal Metrics.
- SCImago (scimagojr.com) for SJR and the Scopus quartile — publicly accessible.
- JCR for Impact Factor and the Clarivate quartile — usually behind a university subscription.
- If your university has no subscription, the central library can normally provide access.
How much does the quartile matter?
For thesis credit, PhD interviews and academic promotion, quartile and impact are often the scoring criteria, and every institution sets its own thresholds. For the research itself, however, a journal whose scope actually matches your work matters more than one quartile step: a paper published in the right journal gets read and cited; a paper placed somewhere purely for the number usually does not.
A few warnings
- If a journal “guarantees” acceptance or replies within days, treat that as a red flag.
- Check lists of predatory and hijacked journals before you submit.
- Verify any quartile claimed in an unsolicited invitation email independently.
FAQ
Is Q1 better than a higher Impact Factor?
They describe the same thing from two angles. The quartile is a relative rank inside one field; impact is the raw average-citation number. To compare journals from different fields, the quartile is fairer, because average citation rates differ inherently between, say, medicine and mathematics.
Does a journal’s quartile change after my paper is published?
Yes — quartiles are updated annually. What usually counts for assessment is the journal’s quartile in the year your paper was published; each institution’s rules specify this.
Move your work forward under a clear contract
Post a request, get proposals from verified researchers, pay in stages — all in your own panel.
Get started