In 1971, he participated in the Hobart School of Welding Technology, 5th Annual Sculpture Workshop in Troy, Ohio.
McCalebb's art has been exhibited internationally in Austria, Denmark, Germany, Hong Kong, Poland, and the United Arab Emirates.
In 2000, McCalebb's sculpture was featured in the historic “Welded Sculpture of the Twentieth Century” exhibition[2] at the Neuberger Museum of Art in Purchase, New York along with Julio González, Pablo Picasso, Anthony Caro, and David Smith.
In the summer of 2005, McCalebb he did a series of public sculpture projects in Balchik, Bulgaria; Borhaug, Norway; and Alytus, Lithuania.
In 2009 Howard McCalebb founded the fine art gallery DadaPost Galerie in Berlin, Germany.