Abstract: The invention relates to a catalyst for conversion of carbon monoxide with steam into hydrogen, carbon dioxide and hydrogen-rich synthesis gases. The conversion can be done at temperatures above roughly 300.degree. C. In addition, a chromium-free catalyst for the aforementioned purpose is described which contains the following in "application form:"(a) 30-98% by weight iron oxide, computed as Fe.sub.2 O.sub.3 ;(b) 0.1-20% by weight copper oxide, computed as CuO;(c) 0.1-20% by weight of an oxide of the rare earth levels computed as Me.sub.2 O.sub.3 (in which Me is a rare earth metal) and/or zirconium oxide, computed as ZrO.sub.2 ;(d) 0.1-30% by weight of at least one oxide of one or several other base metals with an ionic radius from 50 to 72 pm (other than chromium)(e) 0-0.1% by weight of at least one oxide of one or several precious metals from the platinum group;(f) 0-30% by weight barium oxide.