Tik Tok" was certified 5× platinum by the Recording Industry Association of America (RIAA) for sales of five million copies and has sold over six million copies in the United States. The song was the best-selling single worldwide in 2010, selling 12.8 million copies in that year alone, and has sold about 15 million copies to date, becoming the second best-selling single in the digital history after I Gotta Feeling being the most sold digital single in history by a female solo artist
