Date Add & Subtract Calculator

Calculate future or past dates by adding or subtracting days, weeks, months, or years from any starting date.

Today's Date: October 14, 2026

Start Date

Month

Day

Year

Or leave empty to use today's date

Time Period to Add

Years

Months

Weeks

Days

Select whether you want to add to or subtract from a date
Choose your start date or leave empty to use today's date
Enter the number of years, months, weeks, and/or days to add or subtract
Click "Calculate Date" to see the result
Use this for project deadlines, vacation planning, billing cycles, or any date calculations