TOOLJump to any date, forward or back
Need to know the date 90 days from now, or 6 weeks before a deadline? Enter a start date, the amount and the unit — days, weeks, months or years — and this tool gives you the exact resulting date and the day of the week it lands on. Use a negative amount to go backwards.
Handy for
- Deadlines and notice periods ("30 days from today").
- Due dates, warranties and expiry dates.
- Planning events a set time before or after a date.
Counting the gap between two dates instead? Use the date difference calculator, or count only weekdays with the business days calculator.
A worked example
Say a product has a 30-day return window and you bought it on 14 March. Enter that date, add 30 days, and you get 13 April — the last day a return is valid. The tool counts calendar days including weekends and automatically rolls across month and year boundaries, so you don't have to remember which months have 30 or 31 days, or whether it's a leap year.
Everyday date math
Adding or subtracting days answers a surprising number of real questions: a project deadline a set number of days out, a notice period, a trial or subscription end date, a due date counted forward from a start, or simply "what date is 90 days from now?". Because it works backwards too, you can also find when something started from a known end date.
If you only need working days, use the business days calculator instead. To count toward a fixed date rather than by a number of days, try days until, or measure the gap between two dates with the date difference calculator.
Frequently asked questions
How do I add days to a date?
Enter the start date and the number of days to add, and the tool returns the resulting date. Use a negative number to subtract days and find an earlier date.
Can I add weeks, months or years?
Yes. Choose the unit — days, weeks, months or years — and the calculator applies it to your start date, handling month lengths and leap years automatically.
What happens at the end of a month?
Adding months keeps the same day number where possible. If the target month is shorter, the date rolls to the nearest valid day, which is standard calendar behavior.