Communications of the ACM

ISSN 0001-0782 · Association for Computing Machinery · United States · active 1958–2026

Metrics

Scimago quartile (2025)
Q1
Cites per paper (2y)
4.4
SJR
1.54
h-index
435

“Cites per paper” is a two-year cited-by rate computed from OpenAlex. It is not a Clarivate Journal Impact Factor — we neither compute nor license that metric (how the two differ). Citation rates differ enormously between fields, so compare within a discipline. What the other figures mean: journal quartile, SJR, h-index and article processing charge.

Data as of 18 October 2026 (venue index build).

Scimago Journal Rank 2025

In the Scimago Journal Rank 2025 edition, Communications of the ACM is Q1 in Computer Science (miscellaneous) (#27 of 365 journals).

Scimago 2025 quartile and rank of Communications of the ACM in each subject category
Subject categoryQuartileRank in category
Computer Science (miscellaneous)Q1#27 of 365
Cites per document (2 years, Scopus)
2.94
Documents indexed in 2025 (Scopus)
212

The quartile is the one Scimago prints for each category. Rank is the journal's position by SJR among the journals Scimago lists in that category (#1 is the highest); “—” means we hold no rank consistent with that quartile. The document count is what Scopus indexed that year, which can be lower than a journal's full output. Source: SCImago Journal Rank 2025 edition, from Scopus data (scimagojr.com, CC BY-NC).

Communications of the ACM is Q1 in Computer Science (miscellaneous) (2025 edition, #27 of 365 journals), with SJR 1.54 (Scimago) and an h-index of 435 (OpenAlex). Listed in Scopus, Web of Science.

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Indexing & access

Indexed in
ScopusWeb of Science
Access status:
hybrid. Where this comes from publisher-level signals rather than works-level data it is a heuristic — confirm on the journal’s own site, especially regarding any article processing charge.

Official journal site →

Scope

parallelcomputingoptimizationtechniqueshardwarearchitecturealgorithmsdatacompressionartificialintelligencedistributed

Frequently asked

Is Communications of the ACM a predatory journal?

Our screening does not flag Communications of the ACM. That is not a guarantee of quality — it means the venue is not on Beall's archive (frozen since 2017) and does not match our name-pattern heuristic. It is listed in Scopus, Web of Science, which is a positive signal.

Is Communications of the ACM indexed in Scopus or Web of Science?

Per our venue index, Communications of the ACM appears in: Scopus, Web of Science. Index membership changes over time — confirm on the index's own site before relying on it.

What is the impact factor of Communications of the ACM?

Papers in Communications of the ACM are cited about 4.4 times each within two years of publication, and Scimago places it in Q1, with an h-index of 435. Those are the open equivalents: the Clarivate Journal Impact Factor is a proprietary metric we neither compute nor license, so we show the two-year citation rate and Scimago quartile instead — they answer the same question of how heavily the journal is cited. A citation rate is a property of a field as much as of a journal.

What Scimago quartile is Communications of the ACM (Q1, Q2, Q3, or Q4)?

In the Scimago Journal Rank 2025 edition, Communications of the ACM is Q1 in Computer Science (miscellaneous) (#27 of 365 journals). Quartiles split the journals in a subject category into four equal groups by SJR, so Q1 is the most-cited quarter and Q4 the least; Communications of the ACM is cited about 4.4 times per paper over two years, with an h-index of 435.

What is the Web of Science (JCR) quartile of Communications of the ACM?

The Web of Science quartile comes from Clarivate's Journal Citation Reports (JCR), a proprietary product we neither license nor compute — so we cannot state a JCR quartile for Communications of the ACM. The open equivalent is its Scimago quartile, Q1, derived from Scopus citation data. Because JCR ranks against Web of Science and Scimago against Scopus, the two can differ, so check Clarivate's site directly if you need the JCR quartile specifically.

Is Communications of the ACM open access?

Our index records its access status as "hybrid". Where this is derived from publisher-level signals rather than works-level data it is a heuristic, so confirm on the journal's own site — particularly if an article processing charge matters to you.

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