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 21 the album had spent ten weeks on the top twenty, while "If You Had My Love" had been in the top ten of the Hot 100 for twelve weeks. By October, "On the 6" had sold 1.6 million copies in the United States. After a one-year run on the chart the album fell off by the week of June 3, 2000 after charting at number 173. It re-entered two weeks later at number 179, before dropping to number 186 and falling off the chart the following week. Overall, "On the 6" experienced a 53-week run on the "Billboard" 200.