Count days between two dates

Days between dates

Enter two dates to get the time between them in days, in weeks and days, in months and days, and in business days. Put a past date first to count days since.

Checked October 8, 2026 · first publish

100 days14 weeks and 2 days · 3 months and 8 days

From today to the next 8 holidays and events
Holiday or eventDateDays away
Mon, Oct 12, 20265
Sat, Oct 31, 202624
Wed, Nov 11, 202635
Thu, Nov 19, 202643
Thu, Nov 26, 202650
Fri, Nov 27, 202651
Mon, Nov 30, 202654
Mon, Dec 21, 202675

Live counts from today. Click a row to load it into the calculator.

How it works

The day count does not include the start date, so Monday to Tuesday is 1 day. Business days skip Saturdays, Sundays and the federal holidays OPM lists for the years in your range. Methodology

Questions people ask

Does the days between count include both dates?
No. We count the days you cross, which leaves out the start date. Jan 1 to Jan 2 is 1 day. If you need both ends counted, tick 'Count the last day too' and the result goes up by one.
How many days since a date?
Put the past date in the first field and today in the second. The result is the number of days since. Thanksgiving 2025 was Thu, Nov 27, 2025, so that is one date people often enter.
How are months and days counted?
We step forward one calendar month at a time until the next step would pass the end date, then count the remaining days. Jan 31 to Mar 1, 2027 is 1 month and 1 day, since one month after Jan 31 is Feb 28.
Why is the business-day count lower than weekdays?
Weekdays include federal holidays; business days do not. A range that crosses Thanksgiving or Christmas loses one business day for each. The list under the result names every holiday that was removed.

Sources

  1. OPM: Federal Holidays — opm.gov

General date information from official calendars (OPM, USNO). It is not legal, tax or immigration advice; check the agency named on the page for your own deadline.