Add or Subtract Days
Add or subtract days from any date
Resulting date
Thursday, November 5, 2026
It falls on a Thursday
2026-11-05
ISO
11/5/2026
US format
05/11/2026
EU format
1793836800
Unix seconds
Adding months uses calendar months, so Jan 31 plus one month becomes Feb 28 (or 29 in a leap year). All math runs in your browser.
About this tool
Ninety days from today is... when, exactly? Date arithmetic across month boundaries and leap years is not mental math you should trust.
Add or subtract any number of days, weeks or months from a date and get the exact result with its weekday and multiple format representations. Fast, accurate, free.
How to use the add or subtract days
- 1Pick your starting date.
- 2Enter how many days, weeks or months to add or subtract.
- 3See the resulting date, weekday and alternate formats.
Frequently asked questions
Yes. Add or subtract days, weeks or months, with calendar-correct month arithmetic.
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