30 Days From Today
Your local today. Change the days, copy the date.
Count days, without mixing up the starting day
The starting date is day 0. The next date is day 1 when counting forward. In calendar-day mode, weekends and holidays count just like any other date. Select Before start date to count in the opposite direction.
Weekdays mode counts only Monday through Friday. It does not know your country's holidays, company closures or the rules of a contract. For a deadline with specific requirements, check those instructions before choosing a counting method.
Examples you can check
| Start and rule | Result |
|---|---|
| September 4, 2026 + 30 calendar days | Sunday, October 4, 2026 |
| January 31, 2026 + 30 calendar days | Monday, March 2, 2026 |
| February 28, 2028 + 1 calendar day | Tuesday, February 29, 2028 |
| Friday, September 4, 2026 + 1 weekday | Monday, September 7, 2026, even if it is a holiday where you live |
One date, in a format you can use
The main result shows a full date and weekday; the ISO value below uses YYYY-MM-DD to avoid month/day ambiguity. Copy date includes the result, start date, day count and weekend rule, so a pasted note retains the assumptions behind it. Your dates stay in your browser.
Today is local, not frozen in this page
The initial calculation uses your device's current local date. If you leave the page open in its default today mode, it refreshes after midnight when you return or within the next minute while visible. Choosing a custom start date keeps that date fixed until you reset. Check your device's date settings if today looks wrong.
All calculations use the Gregorian calendar, with supported start and result dates from year 1000 through 9999. This is calendar-date arithmetic, not a measurement of elapsed hours. Leap days count; a daylight-saving clock change does not shift the result date.
Frequently asked questions
What date is 30 days from today?
The calculator starts with today's local date on your device and adds 30 calendar days. The result includes its weekday and ISO date. You can change the start date or day count without leaving this page.
Does 30 days from today include today?
No. The starting date is day 0; tomorrow is day 1. Adding 0 days returns the starting date unchanged. If your instructions explicitly count the starting day as day 1, use 29 rather than 30 calendar days.
Are weekends and holidays included?
Calendar days include every day. Weekdays mode skips Saturday and Sunday but does not exclude public or company holidays. It is not a jurisdiction-specific business-day or legal-deadline calculator.
Is 30 days the same as one month?
No. A month has 28, 29, 30 or 31 days. This tool adds a fixed number of days, not a calendar month. For example, January 31 plus 30 days in 2026 is March 2.
Can I calculate 60 or 90 days, or count backwards?
Yes. Change Days to 60, 90 or any whole number from 0 to 36,500. Choose Before start date to subtract days. The displayed date, weekday, ISO value and copied result all update together.
Which time zone does today use?
Today comes from your device's local calendar date, not the server or the build date. Once a start date is chosen, calculations use date-only arithmetic so daylight-saving clock changes do not add or remove a day.