The DATE function’s syntax is =DATE(year,month,day). To calculate the number of days you’ve been alive, click cell A1 and then enter the current date, such as =DATE(2006,04,30). In A2 use the DATE ...

To count forward a certain number of days from a date, enter the date in a cell. In another cell, create a formula such as =E15+45. Format the results cell as a date.

As the name suggests, a date calculator is a tool that computes the number of days between two dates through a few simple inputs. A user can enter any date of their choice in the 'start date ...