Counting days between dates
This calculator finds the gap between two dates in days, weeks and months. It handles leap years and different month lengths correctly.
Common uses
- Counting down to a deadline, exam or event
- Working out the length of a project or trip
- Checking notice periods and contract terms
Inclusive versus exclusive counting
Some people count the start day, some do not. This tool reports the difference, so a Monday to Friday gap is 4 days. Add one if you need to count both end days inclusively.
Frequently asked questions
Does it include the end date?
It reports the difference between the two dates, so the end day is not counted separately.
Does it handle leap years?
Yes, the calculation uses the real calendar.
Can the result be negative?
Yes, if the second date is earlier, and the tool tells you so.