journal-metrics-guide

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SKILL.md

Journal Metrics Guide

A skill for understanding, comparing, and responsibly using journal-level metrics including Impact Factor, CiteScore, SJR, SNIP, h5-index, and Eigenfactor. Covers where to find each metric, how they are calculated, their limitations, and how to select appropriate journals for submission.

Overview of Major Metrics

Metric Comparison

Metric Provider Formula Basis Window Free?
Impact Factor (JIF) Clarivate (JCR) Citations to articles / citable items 2 years No
5-Year IF Clarivate (JCR) Same, extended window 5 years No
CiteScore Scopus/Elsevier Citations / documents 4 years Yes
SJR Scopus/SCImago Prestige-weighted citations 3 years Yes
SNIP Scopus/CWTS Citation potential normalized 3 years Yes
h5-index Google Scholar h-index of articles published in last 5 years 5 years Yes
Eigenfactor Clarivate Network citation influence 5 years Yes

How Key Metrics Are Calculated

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Apr 13, 2026