Date Difference Calculator – Days and Weeks
This date difference calculator ignores time of day and counts whole calendar days from the start date to the end date.
How to use this calculator
This date difference calculator ignores time of day and counts whole calendar days from the start date to the end date. Results stay in your browser. They are estimates, not financial, tax or medical advice.
Frequently asked questions
How are days counted?
The tool uses midnight-to-midnight local dates and reports whole calendar days, plus days divided by 7 for weeks.
Can the end date be earlier?
No. That case is treated as invalid so results stay unambiguous.