Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Measuring Impact: Author Level

H-Index Scores

The H-index is the number of articles with at least h citations. Kim McDonald writes that the H-index for an author describes "a scholar with an index of h has published h papers each of which has been cited in other articles at least h times."

Several databases calculate the H-index for authors based on the citations they know about:

You can also calculate your own H-index. View the chart below for a quick visual.


Related indices

There are several indices related to the H-index; there are good descriptions of these on Harzing's Publish or Perish site.

Egghe's G-index was designed to improve upon the H-index by adding weight to higher-cited papers. 

The Individual H-index gives less weight to coauthored papers. Harzing describes 3 variations on the Individual H-index.

The Contemporary H-index gives less weight to papers cited in earlier years, so you will see a lower score come from calculating this metric on the body of your research over time.

The purpose of the M-index (or M-quotient) is to measure productivity over time.  To retrieve this metric, divide the H-index by the number of years you have been publishing research.

The i10-Index is the number of publications with at least 10 citations. It can be found in Google Scholar in the My Citations area.