On the 6 82 weeks charting in the Netherlands, and was certified platinum for sales of 60,000 copies. "On the 6" was moderately successful in Australia, where it debuted (and peaked) at number 11 on July 18, 1999. In 2002 it was certified platinum by the Australian Recording Industry Association for selling 70,000 copies. "On the 6" peaked at number 14 in the United Kingdom, and was certified platinum by the British Phonographic Industry for sales of over 300,000 copies. The album entered the French album chart at number 24 on July 3, 1999, peaking at number 15 two weeks later. It spent
On the 6 country by the Bundesverband Musikindustrie (BVMI) for sales exceeding 250,000 units. The album also peaked at number three (and was certified gold) in Switzerland, where it sold 15,000 copies. In Canada "On the 6" peaked at number five, and was certified five times for shipments of over a half-million copies. In Belgium, the album reached number ten in Flanders and number six in Wallonia. "On the 6" entered the Dutch album chart at number 55 for the week of July 10, 1999. Nearly a month later, on August 7, it peaked at number six. The album spent a total of