Find 30, 45, 60 or 90 days from today, or add and subtract calendar years, months and days from a custom date. Results show the resulting date, weekday and calendar-day difference. One-week, one-month, three-month and one-year shortcuts remain available.
Use it for reminders, planning and ordinary date checks. Calendar days include weekends. For workday rules use working days or holiday working days; for two known dates use date difference.
Dates must be in years 0001–9999. Today is read after browser hydration, with the actual date and browser IANA time zone visible. Selecting a custom date makes it fixed; Use today returns to a moving local date. Years, months and days are whole numbers from zero to 100000. Choose subtract for earlier dates. At least one offset must be nonzero.
The combined year/month offset selects a destination month, clamping the original day to its last valid day when necessary. Calendar days are applied afterward. UTC calendar components avoid daylight-saving drift; this does not convert your local today into a UTC date. The weekday uses the same calendar-date interpretation.
January 31, 2024 plus 30 days is March 1, 2024. Plus one month is February 29, 2024, so the two operations are different. February 28, 2024 plus one day is February 29. December 20, 2026 plus 30 days is January 19, 2027. Select subtract and the 30-day shortcut to move backward. The start date is day zero.
Today is read from the browser's local date after loading, on return and every 30 seconds. The displayed time zone identifies that local date.
No. Thirty days is a fixed calendar-day offset; one month uses the destination month's length and clamps the day when needed.
No. All calendar days count. Use the separate working-days tools for weekends and holiday rules.
Days from today or a date you choose, using calendar days.