How many Grammy awards has Beyonce Knowles won?

As of February 2010, Beyonce has won a total of 16 Grammy awards. On January 31, 2010, she won six Grammy awards, setting the record for most Grammy awards won by a female artist in one night. Following is a list of the Grammy awards she has won:

2001
Best R&B Performance by a Duo or Group with Vocals (with Destiny's Child)
Best R&B Song (with Destiny's Child)

2002
Best R&B Performance by a Duo or Group with Vocals (with Destiny's Child)

2004
Best Female R&B Vocal Performance
Best R&B Performance by a Duo or Group with Vocal (Shared with Luther Vandross)
Best R&B Song (Shared with Jay-Z)
Best Contemporary R&B Album
Best Rap/Sung Collaboration (Shared with Jay-Z)

2006
Best R&B Performance by a Duo or Group with Vocal (Shared with Stevie Wonder)

2007
Best Contemporary R&B Album

2010
Song of the Year
Best Female Pop Vocal Performance
Best Female R&B Vocal Performance
Best Traditional R&B Vocal Performance
Best R&B Song
Best Contemporary R&B Album.