"Can't Get You Out of My Head" reached number one in 40 countries.[1] It peaked atop the singles chart of every European country, with the exception of Finland.[2] In Australia, "Can't Get You Out of My Head" entered the singles chart at number one, and remained at the position for four consecutive weeks.[3] In the United Kingdom, the single faced competition in a hugely hyped chart battle with Victoria Beckham's single "Not Such an Innocent Girl".[4] On the 29 September 2001 UK Singles Chart, "Can't Get You Out of My Head" debuted at number one with first week sales of 306,000 units.[5][6] It spent four weeks at number one and remained for 25 weeks in the UK's Top 40.[7] As of 2016, it had sold over 1.3 million copies[8] and it is the 75th best-selling single of all time[9] and the 28th best-selling single of the millennium in the country.[10] In the United States, "Can't Get You Out of My Head" peaked at number seven on the Billboard Hot 100 chart[11] and became Minogue's best-selling single in the country since "The Loco-Motion" (1987).[2] It is Minogue's strongest commercial breakthrough in the United States, a region where she had previously achieved limited success.[12][13]
The song was certified gold in Belgium,[14] New Zealand[15] and the United States,[16] platinum in Austria,[17] France,[18] Germany,[19] Greece,[20] the Netherlands,[21] Norway,[22] South Africa,[23] Sweden,[24] and Switzerland,[25] and multi-platinum in Australia (triple-platinum),[26] Italy (double-platinum)[27] and the United Kingdom (double-platinum).[28] As of February 2018, it is Minogue's highest-selling single with worldwide sales of over five million copies.[29]