- Home
- Date & Time
- Days Between Dates Calculator
Days Between Dates Calculator
Pick two dates to see exactly how far apart they are: total days, weeks and days, years-months-days, and weekdays. Switch on “count the end date” for inclusive spans such as hotel stays by day or a notice period.
- Years, months, days
- 2 months, 21 days
- Weeks and days
- 11 weeks, 5 days
- Weekdays (Mon–Fri)
- 59
- Hours
- 1,968
Saved setups
Save a set of inputs you reuse — your usual rate, your loan, your room sizes — and load it back in one tap.
Your recent calculations
Results you calculate here are kept on this device so you can come back to them.
Formula
How to use it
- Choose the start and end dates in either order.
- Decide whether the end date itself should be counted.
- Read the total days, or use the row in the unit you need.
Worked examples
January 1, 2026 to December 25, 2026
- Days between
- 358 days
- Weeks and days
- 51 weeks, 1 day
- Years, months, days
- 11 months, 24 days
October 1 to October 31, 2026, counting both days
- Days between
- 31 days
- Weekdays (Mon–Fri)
- 22
Inclusive or exclusive?
From Monday to Friday of the same week is 4 days by subtraction but 5 days if you count both ends. Contracts, medication courses and “number of days on site” usually count both; elapsed time, age and interest usually do not. If a deadline matters, check which convention the document uses.
Questions people ask
How many days are there between two dates?
Subtract the earlier date from the later one. January 1 to December 25, 2026 is 358 days, or 51 weeks and 1 day.
How many weekdays are in a year?
A common year has 260 or 261 weekdays and a leap year 260 to 262, depending on which day January 1 falls on. Public holidays are not removed here; use the business days calculator for that.