Days Before or After a Date
Find the exact date a number of days before or after any reference date.
days
100 days before 13 July 2026
4 April 2026
Saturday
Reference date
13 July 2026
Direction
100 days before
About this calculator
This tool answers questions like “what date is 90 days from today?” or “what date was 45 days before an appointment?”. Enter the number of days, choose whether to count before or after, and pick a reference date.
The result shows the exact calendar date and the day of the week, counting every calendar day including weekends and public holidays.
Frequently asked questions
Enter the number of days, choose “before” or “after”, and pick a reference date. The calculator adds or subtracts the days and shows the resulting calendar date and weekday.