Date Difference Calculator
Days, weeks, months and working days between two dates, with an option to include the end date.
About Date Difference Calculator
This date difference calculator finds the time between two dates in years, months and days, as well as total days, weeks and working days. Pick a start date and an end date and the results appear instantly.
Turn on Include end date when both days should count, as for leave, notice periods and rental agreements, and choose whether Saturday counts as a working day. It is useful for HR and payroll staff, students counting days to an exam, and anyone checking the duration of a contract or project. It is free, needs no sign-up and runs in your browser.
How to use Date Difference Calculator
- Pick a start date and an end date.
- Turn on “Include end date” if both days should count (for leave or rental periods).
- Choose whether Saturday counts as a working day.
- Read the difference in years, months, days and working days.
Frequently asked questions
Should I include the end date?
For durations such as leave, hotel stays or notice periods where both the first and last day count, include it. For “how many days until”, leave it off.
How are working days counted?
Monday to Friday count as working days (plus Saturday if you tick it). Public holidays are not removed here — use the Working Days Calculator for that.
How do I calculate the number of days between two dates?
Enter the two dates and the calculator counts the days between them, with an option to include the end date.
How many working days are there between two dates?
The calculator counts weekdays between the dates and lets you treat Saturday as a working or non-working day.
How do I calculate years, months and days between dates?
Enter both dates and the difference is shown as completed years, months and days, as well as in total days.
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