What is the i10-index?

The i10-index counts the number of publications that have received at least 10 citations each. It was introduced by Google Scholar in 2011 as a simple, intuitive metric for research productivity.

How does i10-index differ from h-index?

The h-index finds the largest h where h papers each have ≥h citations. The i10-index simply counts papers with ≥10 citations regardless of how many citations they have. A single highly-cited paper counts as 1 toward i10 but boosts h-index more.

Why use i10-index alongside h-index?

Together they tell a fuller story: h-index measures sustained impact, i10-index measures the breadth of your publishable body of work. A researcher with high h but low i10 has a few blockbuster papers; high i10 with moderate h shows broad, consistent output.

Can I calculate i10-index from Google Scholar?

Yes — Google Scholar displays your i10-index on your profile page. You can also copy your citation counts from any source (Google Scholar, Web of Science, Scopus) and paste them into this calculator.

Is i10-index used for tenure or grant decisions?

It is used informally, primarily in US academia and by Google Scholar. Formal evaluation panels typically prefer h-index or total citation counts, but i10 is increasingly cited in CVs and grant applications as a supplementary metric.

i10-Index Calculator – Papers with 10+ Citations

Your Citation Counts

Citation counts per paper

One citation count per line, or separate by commas or spaces. Copy directly from Google Scholar, Scopus, or Web of Science.

Research field

Years since first publication

// The Formula

i10 = count of papers where citations ≥ 10

Introduced by Google Scholar (2011) · Simple count, no weighting · Complements h-index and g-index

h-Index

Largest h: h papers each cited ≥ h times

Measures consistent, sustained impact. Resists inflation by single blockbuster papers.

g-Index

Largest g: top g papers have ≥ g² total citations

Rewards highly-cited breakthrough work that h-index undervalues. Always ≥ h-index.

i10-Index

Count of papers with ≥ 10 citations

Pure productivity breadth metric. Easy to interpret. Used by Google Scholar profile pages.

// What is a Good i10-Index?

By Career Stage

Stage	Typical i10	Years Post-PhD
Early career	3–15	0–5 yrs
Assistant Prof	10–30	5–10 yrs
Associate Prof	25–60	10–20 yrs
Full Professor	50–150+	20+ yrs

By Field (Senior Researchers)

Field	Typical i10
Medicine / Biomedicine	80–250+
Computer Science	40–120
Physics / Chemistry	50–180
Economics / Social Sci.	15–60
Humanities	5–30

Google Scholar vs Scopus vs Web of Science

Google Scholar casts the widest net (conference papers, preprints, theses) giving the highest citation counts. Scopus is selective but comprehensive for peer-reviewed journals. Web of Science is the most conservative. Your i10-index from Google Scholar will typically be 20–40% higher than from Scopus.

Breadth vs Depth

i10 Measures Breadth, h Measures Depth

The i10-index reflects the breadth of your impact — how many papers have crossed a meaningful citation threshold. The h-index reflects the depth — a tight, highly-cited core body of work. A researcher with i10=40 but h=12 has many moderately-cited papers; h=20 with i10=22 has fewer but more consistently-cited publications. Use both metrics together for a complete picture.

// FAQ

Frequently Asked Questions

The i10-index counts the number of publications that have received at least 10 citations each. Introduced by Google Scholar in 2011, it is a straightforward way to measure how much of your work has achieved meaningful scholarly uptake.

At assistant professor level, an i10-index of 10–25 is typical for tenure consideration in STEM fields. Humanities and social sciences have lower thresholds. Always contextualise against field norms and departmental expectations.

If you use Google Scholar, yes — book chapters, conference papers, and even theses can count toward your i10-index if they accumulate 10+ citations. Scopus and WoS typically exclude non-journal outputs.

The fastest route is getting papers already at 7–9 citations to the 10-citation threshold: share them at conferences, link from your website, and write follow-up papers that cite them. Increasing total output and targeting high-readership journals also accelerates i10 growth.

Neither is universally better — they measure different things. h-index reflects the depth of your impact; i10-index reflects the breadth. A researcher with i10=40 but h=12 has many moderately-cited papers; h=20 with i10=22 has a tight, highly-cited core body of work.

Google Scholar includes self-citations; Scopus and WoS can filter them out. Excessive self-citation is frowned upon in academia. Most evaluation committees will mentally discount a high i10 if the underlying citations are self-citations.

Most PhD students finish with an i10-index of 0–5. An i10 of 3–8 by completion is strong and competitive for postdoc applications. The i10-index becomes more meaningful after 5–7 years of publishing.

Yes. Google Scholar displays your h-index and i10-index prominently on your public profile. It shows both an all-time value and a since-2020 (rolling 5-year) value, allowing evaluation of recent productivity.

// Methodology & References

Formula & Calculation Method

i10-Index (Google Scholar)

i10 = count(papers with ≥ 10 citations)

i10 — Number of publications with at least 10 citations

Source: Google Scholar (introduced November 2011)

Expert Insights & Research

i10-Index is the simplest robust metric — easy to compute and interpret. Common benchmarks: i10 = 10 indicates an established mid-career researcher; i10 = 50+ suggests a senior researcher with broad publication portfolio.

— Google Scholar Citations launch documentation; Connaway & Radford, 'Research Methods in Library and Information Science' (2017) (2017)

i10-Index discriminates poorly between high-impact and merely-prolific researchers. Best used in combination with H-Index and field-normalized impact (FWCI) for research evaluation.

— Hicks et al., 'Leiden Manifesto for Research Metrics', Nature (2015) (2015)

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