Radar (song) - Commercial Performance

Commercial Performance

On November 17, 2007, due to digital downloads for the Blackout release, "Radar" peaked at number fifty-two on the U.S. Billboard Hot Digital Songs. The song also charted in several countries based on strong digital sales and airplay alone, surprisingly reaching high chart positions. In Ireland, the song debuted at number forty-seven on July 15, 2008. It peaked at number thirty-two on August 5, 2008. In Sweden, "Radar" debuted at number forty-six on July 24, 2008. The single peaked at number eight on July 28, 2008, becoming the second highest-charting single from the album after "Gimme More". It stayed on the position for two weeks, and for eight weeks on the chart overall. In New Zealand, the song debuted at number thirty-seven on August 18, 2008, and peaked at number thirty-two two weeks later. It stayed on the chart for five weeks.

After being confirmed as the fourth single from Circus, "Radar" re-entered the charts in several countries. On August 29, 2009, the song peaked at number thirty on the U.S. Billboard Pop Songs. On September 5, 2009, "Radar" finally entered the Billboard Hot 100 at number ninety, and peaked at number eighty-eight on the following week. It became her fifth song from Circus to chart on the Hot 100, marking the first time five songs from one of her albums entered the chart. It was also her 22nd Hot 100 hit. "Radar" also became her 21st hit on the Pop Songs chart, the most for any artist of the decade. As of July 2010, "Radar" has sold 481,000 paid digital downloads in the United States. On the same week, the song peaked at number sixty-five in Canada. The track re-entered the ARIA Singles Chart at number forty-six on July 20, 2009 and stayed on the chart for just one week. In the UK, the song peaked at number forty-six on August 2, 2009.