3.3(top 10%)
2-year impact
3.4K(top 10%)
PR articles
114.0K(top 5%)
PR citations
120(top 5%)
PR h-index
135(top 5%)
h-index
3.2(top 10%)
2-YI (no self-cite.)
3.9K
documents
154.0K
doc citations
These checks describe how ACS Macro Letters's record is put together. Each one states what it measured and where the line was drawn, so a verdict can be argued with. They are not combined into a single score, and a check marked Watch or Concern is a reason to look closer, not a finding of misconduct.
Citation integrity OK
OKSelf-citation share of 2-year impact4.8%
How much of the 2-year impact comes from the journal citing itself. Both figures use the same denominator, so this is the exact share, not an estimate. — 3.32 with self-citations, 3.16 without
OKSelf-citation share of 3-year impact4.5%
The same measure over a three-year citation window. — 3.49 with self-citations, 3.33 without
OKSelf-citation share of 5-year impact4.0%
The same measure over a five-year citation window. — 3.46 with self-citations, 3.33 without
OKSelf-citation share of 10-year impact3.1%
Over ten years a journal's own back catalogue is its most available source of citations, so a higher share here is normal. — 3.14 with self-citations, 3.04 without
OKJournal self-citation rate3.6%
The share of all citations received that came from articles in this same journal, across the whole record rather than one impact window.
OKAuthor self-citation rate19.0%
The share of citations whose citing paper shares an author with the paper it cites. Papers with more than 100 authors are excluded from both sides, because a large collaboration shares an author with almost everything it cites.
OKSelf-citation trendsteady
Whether the journal self-citation rate has been rising or falling over the last five years.
Publication record OK
OKRetraction notices per 1,000 articles0.27
Retraction notices published by this journal, against its peer-reviewed output. Some retractions are a sign of a journal correcting the record; a high rate is a sign of what got in. — 1 retraction notice across 3730 peer-reviewed articles
Trajectory Watch
Watch2-year impact trenddeclining 23%
Direction of the 2-year impact over the last five available years.
OK5-year impact trendsteady
Direction of the 5-year impact over the last five available years.
OKScore D trendsteady
Direction of Score D, the prestige-weighted citation ratio, over the last five available years.
OKScore D tierTier 2 of 5
Where the journal's latest Score D places it among all journals ranked that year. Tier 1 is the top 5%, Tier 2 the top quarter, Tier 3 the top half, Tier 4 the top three quarters. — Score D 0.49, ranked 5877 of 32517 journals in 2025
Output and reach OK
No dataPublication speednot available
Median days from submission to publication over the last three years, from the dates the publisher states on the article.
OKUncited share4.3%
The share of the journal's peer-reviewed articles that have never been cited. Across the whole database the median journal sits near 56%, because most journals are small, specialised or recent, so this is flagged only against the corpus: above 85% is the worst quarter and above 96% the worst tenth. — 161 of 3730 peer-reviewed articles have never been cited
OKOutput volume trendsteady
Whether the number of articles published per year has been growing or shrinking. A sudden multiplication of output is worth understanding before submitting.
OKUnusual increase in country participation0
Number of recent top-ten countries passing both the field-reference and historical-increase screens. Country coverage and the reference ranges are shown below. — No unusual increase detected
OKSubject breadth1
How many disciplines the journal is classified under. A very wide scope is normal for a megajournal and unusual for a specialist title. — classified under 1 discipline
No dataNational quality levelnot available
The journal's level under the national research-assessment classification. Level 1 is the base listing; level 2 is considered high quality within its field and level 3 the most selective tier. Only about 2% of listed journals reach level 2 or 3.
OKOpen-access share4.8%
The share of the journal's peer-reviewed articles published under an open licence, out of those whose licence could be read from the article itself. Articles with no licence statement are left out of both sides rather than counted as closed, so a journal with thin coverage shows a figure over a small denominator, not a low one. — 178 of 3716 articles with a readable licence; 147 under a licence permitting reuse
OKData available to download0.2%
The share of peer-reviewed articles, reviews excluded, whose underlying data can be downloaded rather than only requested. Counted from the article's own data-availability statement and the data files deposited with it. — 7 of 3396 articles; a further 0 supply data on request
Author-country reference
No unusual increase detected. Reference: 34 other journals sharing a discipline, national quality levels 2–3. Each journal has equal weight; zero country shares are included. A Watch requires at least 30 recent papers from the country, a share at least 5 percentage points above the peer 95th percentile, and a rise of at least 15 points over dated papers before 2024. Both periods need 100 country-attributed papers and 80% country coverage, with coverage differing by no more than 10 points. These are screening thresholds, not a finding about journal quality. Stable national concentration is context.
2024–2026: 381 of 383 papers have country affiliations (99.5%). Shares use these papers and their 3,131 citations; countries overlap.
Dated papers before 2024: 2,978 of 3,022 papers have country affiliations (98.5%). Shares use these papers and their 124,988 citations; countries overlap.
| Country | Recent papers | Recent share | Earlier share | Change | Peer median | Peer 95th percentile | Screen |
|---|---|---|---|---|---|---|---|
| China | 156 | 40.9% | 24.4% | +16.5 pp | 45.7% | 81.6% | No unusual increase |
| United States | 122 | 32.0% | 41.6% | -9.6 pp | 9.1% | 41.1% | No unusual increase |
| Japan | 40 | 10.5% | 10.6% | -0.1 pp | 4.0% | 8.6% | No unusual increase |
| Germany | 23 | 6.0% | 9.2% | -3.2 pp | 7.3% | 18.5% | No unusual increase |
| United Kingdom | 15 | 3.9% | 5.5% | -1.6 pp | 4.0% | 11.0% | No unusual increase |
| France | 13 | 3.4% | 5.9% | -2.5 pp | 3.4% | 7.1% | No unusual increase |
| South Korea | 11 | 2.9% | 3.1% | -0.2 pp | 2.0% | 6.0% | No unusual increase |
| Australia | 10 | 2.6% | 4.3% | -1.6 pp | 1.7% | 6.0% | No unusual increase |
| India | 9 | 2.4% | 0.9% | +1.4 pp | 3.5% | 14.8% | No unusual increase |
| Switzerland | 9 | 2.4% | 1.7% | +0.6 pp | 1.1% | 3.9% | No unusual increase |