Free Date Difference Calculator
Calculate elapsed days and calendar duration between two dates for planning, forms and everyday tasks.
Helpful note
This tool counts elapsed days between the selected dates. Some legal, billing and deadline rules use inclusive counting or special calendar rules.
About Date Difference Calculator
Find the duration between two calendar dates for planning, forms, project schedules and personal calculations. The result counts elapsed days and does not automatically include both endpoints.
How to use this tool
- Select a start date.
- Select an end date.
- Calculate the elapsed days and calendar duration.
Frequently asked questions
The elapsed-day result measures the time between dates. If you need an inclusive count for a form or deadline, add one day where appropriate.
Yes. Choose any valid start and end dates.