He was a distinguished amateur, winning the 2004 Coupe Mouchy (highest amateur competition in France), and the. In 2007 and 2010, Calmels played on the both the European Tour and the Challenge Tour. His best finish on the European Tour was a tie for second at the 2007 Open de Saint-Omer, a tournament co-sanctioned by both tours.
In November 2011 he was hurted in a lift accident and spent months recovering.
He came back on Challenge Tour after Q school. In 2013 he was on Challenge Tour and finished the season 11th in ranking.
He is back on European Tour for the 2014 season Calmels turned seriously to golf at the age of eleven, he underwent several operations on his mouth after birth double cleft and was advised by doctors to take up a non-contact sport after being struck in the face playing handball – the game his father played in the French First Division – so he decided to concentrate on golf. 2004 Coupe Mouchy Challenge Tour wins (3) Other wins (3).