Introducing Days Between Dates — Exact Counts, No Off-by-One

“How many days between these two dates?” has two correct answers — the gap, and the count including both ends — and picking the wrong one shifts every downstream date by a day. The new Days Between Dates calculator shows both and removes the guesswork.

What it does

• Exact day count: the difference between any two dates, in any order.
• Inclusive toggle: measure the gap, or count both endpoints.
• Weeks and remainder: the total expressed as weeks plus days.
• Working-day split: weekdays, weekend days, and business days.
• Client-side: nothing you enter leaves your browser.

Why it matters

Deadlines, notice periods, billing cycles, and countdowns all hinge on an exact day count — and on whether the end date is included. Making that choice explicit, and handling leap years automatically, is the difference between a correct date and an awkward one-day error.

Learn more

Read Counting Days Between Dates: Inclusive vs Exclusive, then try the calculator.