Comparation of the H-Index of Researchers of Google Scholar and Scopus

H-Index has been widely used a performance indicator of researchers around the world especially in Indonesia. The Government uses Scopus and Google scholar as indexing references in providing recognition and appreciation. However, those two indexing services yield to difference H-Index from those services. researchers indexed bw Webometrics, are used as reference's data in this paper. Currently, Webometrics only uses H-Index from Google Scholar. This paper observed and compared corresponding researchers' data from Scopus to get their H-Index score. Subsequently, some researchers with huge differences in score are observed in more detail on their paper's publisher. This paper shows that the H-Index of researches in Google Scholar is approximately2.45 times of their Scopus H-Index. Most difference exists due to the existence of uncertifield publishers, which is considered in Google Scholar but not in Scopus.