About this tool
Count the days, weeks, months and working days between two dates, or add and subtract time from a date.
Day counts use the exact calendar (leap years included). Working days skip the weekend days you choose. Adding months keeps the day of the month, moving to the last day when the month is shorter (31 Jan + 1 month = 28/29 Feb).
Formula: days = end − start
Example: What do you want to calculate? = Days between two dates, Start date = 2026-01-01, End date = 2026-12-31, Include the end date = 1, Weekend days = Saturday & Sunday → Days = 365, Weeks = 52.
Public holidays are not known to the tool, so working days do not exclude them.
Quick steps
- Enter your values — every field shows its unit.
- Press Calculate (or Try an example to see how it works).
- Read the results and copy them if you need them elsewhere.
The calculation runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the Date & Days Between Calculator work?
Day counts use the exact calendar (leap years included). Working days skip the weekend days you choose. Adding months keeps the day of the month, moving to the last day when the month is shorter (31 Jan + 1 month = 28/29 Feb).
What should I keep in mind?
Public holidays are not known to the tool, so working days do not exclude them.
Is my data sent anywhere?
No. The numbers stay on your device; the page only shows the result.