- round off to something
- round off to something & round up to something & round down to somethingto express a number in the nearest whole amount or nearest group of 1, 10, 100, 1,000, 1/10, 1/100, 1/1,000, etc. •
When doing taxes, Anne rounded her figures off to the nearest dollar.
•These census population figures are rounded up to the nearest million.
Dictionary of American idioms. 2013.