You can calculate your H-index by setting up profile in the Google Scholar Citations.
Web of Science also provides an author H-index.
- Search for the author's name (for common names add another search box and search for the university zip code in the address)
- Click on Create Citation Report, on the right side of the results
- The h-index is located in the summary area next to the citation charts
The Hirsch Index is 'a scholar with an index of h has published h papers each of which has been cited in other papers at least h times'
Another widget for Google Scholar is Harzig's Publish or Perish
