"What's a good h-index?" is one of the most-searched questions among graduate students and early-career researchers, and it's also one of the hardest to answer honestly, because the true answer is "it depends entirely on your field and how many years you've been publishing." Still, some rough, widely-cited reference points can help you understand roughly where you sit.
Why Field Matters More Than Almost Anything Else
Citation practices vary enormously by discipline. In fields like molecular biology or physics, papers routinely have dozens of co-authors and reference lists running into the hundreds, and citation counts climb quickly as a result. In fields like pure mathematics, philosophy, or many humanities disciplines, papers are typically single- or dual-authored, reference lists are shorter, and the entire field publishes and cites far less frequently. An h-index of 15 might be unremarkable in biomedicine and genuinely impressive in mathematics. Comparing your h-index against someone in a different field tells you almost nothing useful.
Rough Benchmarks Within a Field
With that caveat firmly in place, a commonly cited rough guide — originally proposed by Jorge Hirsch, who created the metric — suggested an h-index of around 10–12 for tenure at a major research university, 15–20 for becoming a full professor, and 20+ for membership in a national academy, specifically in physics. Adjust these downward for lower-citation-volume fields and upward for higher-volume ones. Treat them as an order-of-magnitude sanity check, not a target to hit.
Career Stage Changes the Baseline Too
An h-index also naturally grows over a career, simply because it takes time for papers to accumulate citations — a paper published last year hasn't had the years needed to be cited as heavily as one published a decade ago, regardless of its ultimate quality. This means a fair comparison also has to account for years since your first publication, not just raw field. A five-year post-PhD researcher and a twenty-five-year full professor in the same field will naturally have very different h-indices even with comparably strong individual papers.
What Committees Actually Do With the Number
Most hiring and tenure committees who ask for an h-index are using it as one input among several, not a pass/fail threshold. They're typically comparing your number against others at a similar career stage within the same or an adjacent field — a context you can partially recreate yourself by looking at recent hires or tenure cases in your department. An h-index far below that local benchmark is worth understanding and addressing; one comfortably within range is rarely something to worry about in isolation.
Check Your Own Number First
Before benchmarking against anyone, it helps to know your actual current number rather than estimating. Know Your Faculty's [free H-Index Calculator](/h-index-calculator) gives you your h-index and i10-index instantly from your paper citation counts, with nothing to sign up for or upload. From there, Know Your Faculty's directory also lets you see the general research profile of professors in your field and career stage, which is a far more useful comparison than any single number quoted in isolation.