Step by step
- Enter your start date in From and your end date in To.
- Ask whether both the first and last dates are part of the period.
- Leave Include the end date unticked for countdowns or nights stayed.
- Tick Include the end date for inclusive ranges like workdays, leave, or event schedules.
At a glance
| Situation | Include end date | Example |
|---|---|---|
| Countdown to an event | No | From today to tomorrow is 1 day |
| Hotel nights | No | Check-in on the 1st to check-out on the 3rd is 2 nights |
| Holiday or leave days | Yes | From the 1st to the 10th is 10 days |
Related questions
Why does today to tomorrow equal 1 day without the end date?
Because you are measuring the 24-hour difference between two points in time, not counting two separate calendar days.
What happens to working days if I include the end date?
If the end date falls on a Monday through Friday, ticking Include the end date adds 1 working day to the total.
How do I subtract days from a date instead?
Use the Add or subtract days section below the main calculator and enter a negative or subtracted amount.
More questions: days calculator
- How to Count Working Days Without Weekends
- How to Count Days Between Two Dates in Excel
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- How to Add or Subtract Days From a Date
- How to Convert Days to Weeks, Months, or Hours
- How to Count Days Until an Event or Holiday
- How to Count Days for Visa and Citizenship Applications
- How to Count Days Since a Past Date
Open the full days calculator →
Updated November 14, 2026.