How the date calculator works
The total day count is the straightforward difference between the two calendar dates. The month breakdown carries over calendar months and remaining days the same way a manual calendar count would, so it stays accurate across different month lengths and leap years.
Step-by-step guide
- Enter the start date.
- Enter the end date.
- Read the total days, weeks, approximate months, and business day count instantly.
Common uses
- Counting down to a deadline, event or trip
- Calculating contract or lease durations
- Working out project timelines in business days
Frequently asked questions
The total days figure is the calendar difference (end date minus start date) — for an inclusive day count (counting both endpoints), add 1 to the result shown.
Business days count Monday through Friday only, excluding weekends. Public holidays are not automatically excluded since these vary by country and region.
Yes — enter any two dates in either order; the calculator shows the absolute duration between them.