Date Difference
Measure the exact calendar and total time between two dates.
Processed privately on your device
Helpful guidance
Choose any two dates; their order does not matter because the tool measures the absolute interval.
The calendar result separates complete years and months from remaining days.
Total days use UTC date boundaries, and decimal weeks are total days divided by seven.
Frequently asked questions
Does the order of dates matter?
No. The same positive interval is shown whichever date is entered first.
Why can months have different day counts?
Calendar months retain their real lengths rather than assuming every month has 30 days.
Are weeks rounded?
Weeks are shown to two decimal places from the exact total-day count.
Does daylight saving affect the result?
No. Date-only UTC arithmetic avoids daylight-saving hour changes.