 In Canada , the single topped the Canadian Hot 100 on October 18 , 2008 , and stayed in the position for five consecutive weeks . " Womanizer " entered the Australian charts on October 13 , 2008 at number sixteen . Three weeks later , it peaked at number five . It shipped over 70 @,@ 000 copies , earning a platinum certification by the Australian Recording Industry Association ( ARIA ) . In New Zealand , the song peaked at number nine on October 27 , 2008 . The song was certified gold according to the Recording Industry Association of New Zealand ( RIANZ ) , selling over 7 @,@ 500 copies . The track debuted at number four in the United Kingdom on November 9 , 2008 and reached its peak position of number three four weeks later . On January 16 , 2009 , it was certified silver by the British Phonographic Industry ( BPI ) , with sales over 200 @,@ 000 copies . According to The Official Charts Company , the song has sold 447 @,@ 000 copies there . " Womanizer " reached the peak in a number of European countries , including Belgium ( Flanders ) , Denmark , Finland , France , Norway and Sweden . It also reached the top ten in Austria , Belgium ( Wallonia ) , Czech Republic , Italy , Spain and the Netherlands . In addition , the track became Spears ' sixth European number @-@ one single . 
