How it works
Pick a start date (today by default) and a number of days. The calculator moves forward on the calendar one day at a time, so month lengths and leap years (like February 29, 2028) are handled for you. Choose Before to count backward, for example "90 days ago".
With Business days, Saturdays and Sundays are skipped. Public holidays are not skipped, so check those yourself for legal or shipping deadlines.
End date = start date + N days (day 1 is the day after the start date)
Worked example
Starting on Thursday, October 22, 2026, 30 days later is Saturday, November 21, 2026, and 30 business days later is Thursday, December 3, 2026. 90 days before it is Friday, July 24, 2026.
Frequently asked questions
Does the count include today?
No. Day 1 is tomorrow, the usual way deadlines are counted. If your contract counts the start day as day 1, enter one day fewer.
How do I find a date in the past?
Set Direction to Before. For example, 90 days before today.
Are weekends skipped?
Only if you choose Business days. Holidays are never skipped, so add them yourself.
Does it work across years and leap years?
Yes. It steps through the real calendar, including February 29 in leap years.
Which time zone is today?
Your device's own date, so the answer matches the calendar on your phone.