Because childhood obesity is such a threat to the physical, mental, and social health of youth, there is a great need to identify effective strategies to reduce its prevalence. The objective of this study was to estimate the mean calories from added sugars that are saved by switching sugar-sweetened beverages (including soda, fruit-flavored drinks, and sport drinks) and flavored milks consumed to unflavored low-fat milk (<1% fat) at meals and water between meals. Simulation analyses used 24-hour dietary recall data from the third School Nutrition Dietary Assessment Study (n=2,314), a 2005 national cross-sectional study of schools and students participating in the National School Lunch Program, to estimate changes in mean calories from added sugars both at and away from school.