Days Between Dates
How long until the big day — exactly? Pick two dates and the penguin counts the days, breaks them into weeks, and tells you which weekday each lands on.
How to use
- Pick the start date. Today is pre-filled — or choose any date, past or future.
- Pick the end date. The deadline, the trip, the birthday — whatever you're counting toward.
- Read the total. The exact day count, big and bold.
- See the breakdown. Weeks and days, calendar months, plus which weekday each date falls on.
Frequently asked questions
How do I calculate the number of days between two dates?
Enter both dates above — the calculator counts every day in between using the real calendar, leap years included. The count excludes the start date and includes the end date, which is the standard convention.
How many weeks is 100 days?
100 days is 14 weeks and 2 days. The weeks-and-days line under the total converts any count for you automatically, so you never have to divide by seven in your head.
Does it count weekends or only weekdays?
It counts every calendar day, weekends included. A business-days-only mode is on the wishlist — for now, subtract two days per full week as a rough estimate.
What if the end date is before the start date?
The calculator tells you the dates are flipped instead of showing a confusing negative number. Swap the two dates — or just read the result as the distance between them either way.
How do I find which weekday a future date falls on?
Both dates' weekdays are shown right under the result — handy for planning events, booking travel, and settling “is that a Friday?” debates.
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