How many days are between two dates?

Enter both dates above. The calculator subtracts them and shows the result in days, weeks and months.

Is the start date counted?

The calculator counts the days from the start date to the end date, so the start date is day 0. Tick 'include end date' to count both.

How many days are in 2027?

365. 2027 is not a leap year; the next one is 2028.

Can I count backwards?

Yes. If the end date is before the start date, the result is shown with a note.

Days Between Dates Calculator

Pick two dates to see how many days are between them, plus the same span in weeks and in months. The end date is not counted unless you tick the box.

Last updated: 8 November 2026

Days between two dates

Include the end date or not?

By default the calculator does not count the end date, so Monday to Tuesday is 1 day. This is the usual answer to "how many days until" and "how long ago" questions, and it is how hotel nights, loan interest and most age calculations work. Tick include end date when both the first and last day count — for example the number of days of a festival, a course or a period of leave. Including the end date always adds exactly one day.

Worked examples

From 1 January 2027 to 31 December 2027: 364 days (365 if you include the end date).
From 8 November 2026 to Christmas Day, 25 December 2026: 47 days, or 6 weeks and 5 days.
From 6 February 2027 (Chinese New Year) to 28 March 2027 (Easter): 50 days.
From 1 March 2027 to 1 March 2028: 366 days, because the span includes 29 February 2028.

Weeks and months

Weeks are simply the number of days divided by seven, with the rest shown as days. Months are counted on the calendar: from 15 January to 15 March is 2 months, whatever the number of days. When the start day does not exist in the end month (31 January to 28 February), the calculator counts the last full month and shows the remaining days, so the total always matches the day count.

Frequently asked questions

How many days are between two dates?: Enter both dates above. The calculator subtracts them and shows the result in days, weeks and months.
Is the start date counted?: The calculator counts the days from the start date to the end date, so the start date is day 0. Tick 'include end date' to count both.
How many days are in 2027?: 365. 2027 is not a leap year; the next one is 2028.
Can I count backwards?: Yes. If the end date is before the start date, the result is shown with a note.