Add / Subtract Days (and Weeks / Months / Years)

Quickly add or subtract days, weeks, months, or years from a chosen date. Use the instant preview or submit to see the final result.

This free Add/Subtract Days Calculator helps you quickly find future and past dates. Enter a starting date and choose how many days, weeks, months, or years you want to add or subtract. The tool instantly shows the resulting date along with the weekday and ISO week number. Use it for scheduling tasks, planning events, calculating deadlines, or checking how many days remain between important dates.

Need to calculate working days instead? Try our Business Days Calculator. If your result falls near a holiday, see our U.S. holiday guide.