Days Between Dates
Count the number of days, and full weeks, between two dates — with an option to include the end date.
Days between
- Full weeks
- 8
- Remaining days
- 4
Updates live as you type
Frequently asked questions
Enter both dates and the calculator counts the calendar days from the start to the end. It also breaks the total into full weeks plus leftover days.
By default the end date is excluded, which measures the gap. Choose “Include end date” to count both endpoints — useful for billing or leave that covers the final day too.
Yes. The count spans February correctly, returning 60 days for 1 Jan to 1 Mar in a leap year and 59 in a normal year.
Yes. If the start is later than the end, the result is negative, indicating the end date is in the past relative to the start.
The same two dates, two different correct answers
1 January 2024 to 1 March 2024, with the end date excluded, comes to exactly 60 days — 8 full weeks and 4 remaining days. Toggle "include end date" on the identical range, and it becomes 61. Both are correct; they're just answering slightly different questions, which is exactly why this calculator makes the choice explicit instead of picking one silently. Billing periods and inclusive leave typically need both endpoints counted; measuring a pure gap between two moments typically doesn't.
Why 60 days, not 59 or 61
That 60-day span is itself a quiet leap-year lesson: 2024 is a leap year, so February contributes 29 days instead of the usual 28. Run the identical calculation on a non-leap year — 1 January to 1 March 2025 — and it returns 59 days instead, one day fewer purely from February's length that year. The arithmetic is calendar-accurate throughout, so February and leap years never throw off the count the way a naive "days in month × number of months" shortcut would.
What a negative result actually tells you
Enter a start date later than the end date, and the result comes back negative rather than erroring out — a genuinely useful signal that the two dates are swapped, or that the "end" in mind is actually in the past relative to the start, rather than a bug to work around.
Use this for deadlines, anniversaries, notice periods, subscription windows and historical gaps between any two dates. To shift a single known date by a set number of days instead of comparing two dates already in hand, the add/subtract days calculator is the complementary tool.