The album debuted at number eight on the US Billboard 200 with first-week sales of 83,000 copies. Sales increased week by week, its best week being that of 3 January 1998 when it sold 284,000 copies. The album finally peaked at number three on 14 February, when Spice also returned to the top 10, making the Spice Girls the first British band to have two albums in the top 10 of the Billboard 200 at the same time since the Rolling Stones in summer 1975. The album sold 1.74 million copies in the first 12 weeks and 3.2 million in the first 10 months. It was certified four-times platinum by the Recording Industry Association of America (RIAA) on 19 May 1999, and by December 2007, it had sold 4.2 million copies in the US. In Canada, the album peaked at number two on the Canadian Albums Chart and was certified diamond by the Canadian Recording Industry Association (CRIA) for shipments of one million copies. Spiceworld was a big success in Canada, it was the groups second diamond-selling album and spent 43 weeks in the Top 10 and 60 weeks in the Top 20 album chart. Spiceworld had sold 13 million copies by the end of 1998, making it one of the worlds best-selling albums by a girl group.

How many more weeks did the album spend in the Top 20 than the Top 10 in Canada?
17