Date & time
Date difference calculator
Find the calendar and elapsed-time difference between two dates.
Clear and dependable
How to use this calculator
Enter the start and end dates, then choose whether the end date should be included in the count.
Understanding the result
The calendar result separates complete years, months and remaining days. The detail line shows elapsed months, weeks and total days; reversed inputs are identified.
Common questions
Are intermediate values rounded?
No. Full practical precision is retained during calculation and rounding is applied only to the displayed values.