Heliyon’s Journal Impact Factor (JIF)

Heliyon’s Journal Impact Factor (JIF) is a specific, illustrative instance of the general Journal Impact Factor metric published annually by Clarivate in the Journal Citation Reports (JCR). Like every JCR-indexed title, Heliyon receives its own separate JIF, and that figure changes with each annual JCR release — but Heliyon’s status as a broad-scope, open-access megajournal makes the number unusually wide in what it averages together.

What the number actually measures

The JIF is a ratio: citations received in a given year to citable items (articles and reviews) the journal published in the two preceding years, divided by the number of those citable items. Heliyon, launched by Elsevier in 2015 and operating as part of the Cell Press family, publishes original research across essentially every scientific, medical, engineering, and social-science discipline rather than specializing in one field — from internal medicine and food science to nuclear chemistry and interdisciplinary work.

Current figure — hedge before citing

Third-party JCR-tracking aggregator services report Heliyon’s 2024 JCR data-year Impact Factor (2025 release) at approximately 4.3, an increase over its prior-year figure, alongside a separately computed 2024 CiteScore (Elsevier/Scopus, a different four-year-window metric) of approximately 4.2. CASRAI could not independently confirm either figure directly against Cell Press’s own Heliyon journal page or jcr.clarivate.com at the time this entry was written — Heliyon’s official page returned an access error during verification and could not be checked directly. Treat both numbers as reported, not CASRAI-verified, and check Heliyon’s own journal page or jcr.clarivate.com directly for the current, authoritative figure before citing one in a formal context such as a CV, grant application, or tenure file.

Why Heliyon’s megajournal model matters here

Heliyon peer-reviews submissions for technical and ethical soundness — is the research validly conducted, reported, and ethically compliant — rather than for subjective judgments of novelty, significance, or anticipated citation impact. It also explicitly states it will consider negative or null results, incremental advances, and replication studies for publication, categories many narrower-scope journals decline. That editorial criterion is deliberately decoupled from citation-based metrics like the JIF. Because Heliyon accepts technically sound work across an unusually wide range of fields rather than curating for anticipated impact within a narrow scope, its journal-wide average citation figure blends together very different citation norms from very different disciplines — the same dynamic seen in other megajournals such as PLOS ONE. This is a distinct point from whether the JIF itself is reliable; it is specifically about why a single journal-level number is a poor stand-in for the quality or subject fit of any one Heliyon article.

Worked example (illustrative, not the journal’s real figures)

Using round, hypothetical numbers rather than Heliyon’s actual annual citation and publication counts: if a journal published 10,000 citable items across the two preceding years, and those items received 43,000 citations in the JCR data year, the resulting JIF would be 43,000 / 10,000 = 4.3. This is the same mechanical calculation Clarivate applies to every JCR-indexed title, including Heliyon — what varies between journals is the citation and publication volume feeding it, not the arithmetic.

Why this number alone is a poor stand-in for quality

Citation-tracking organizations including DORA, the CoARA coalition, and Clarivate itself caution against over-relying on a single journal-level metric to judge an individual article or researcher. DORA’s core recommendation is not to eliminate the JIF, but to stop using it as a proxy for the quality of a specific paper or the merit of an individual researcher’s work. For Heliyon specifically, this caution is reinforced by the journal’s own editorial philosophy: because acceptance decisions are explicitly soundness-based rather than impact-based, using the journal’s JIF to infer anything about a particular published article’s significance runs directly against how Heliyon says it selects what to publish in the first place.

Counter-example

Heliyon’s CiteScore (a separate Elsevier/Scopus metric using a four-year citation window and a broader document set) is not the same figure as its Clarivate JIF, and reporting one as if it were the other is a common sourcing error. Likewise, Heliyon’s soundness-only peer review and its willingness to publish negative or null results are not themselves evidence for or against the journal’s JIF being high or low — the two are separate systems (editorial acceptance criteria vs. a citation-count ratio) measuring different things, and neither validates the other.

Related terms

• Journal Impact Factor (JIF) — the general metric this page illustrates with one journal’s reported figure.
• PLOS ONE’s Journal Impact Factor (JIF) — another megajournal-model illustration of the same metric.
• Cureus’s Journal Impact Factor (JIF) — a contrasting broad-scope, speed-oriented journal that currently has no active JIF after Web of Science delisting.
• CiteScore — Elsevier/Scopus’s competing journal-level metric, different window and denominator.
• DORA (San Francisco Declaration on Research Assessment) — the reform commitment behind the over-reliance caveat above.
• How to Look Up a Journal’s Impact Factor — the practical lookup guide this term supports.