Days Between Dates Calculator – How Many Days Between Two Dates (2025)

Days Between Dates Calculator

Want to know how many days are between two dates? Open our free calculator, pick your start and end dates, choose inclusive or exclusive counting, and you’ll get the exact number of days. You can also remove weekends and U.S. holidays if you need a business-day count. Simple steps, clear examples, no fluff. Updated 2025.

Open the Free Date Calculator

Quick steps

  1. Go to the tool: Free Date Calculator.
  2. Select your start date and end date.
  3. Pick a mode:
    • Exclusive = count the days between the two dates.
    • Inclusive = count both the start and end date.
  4. (Optional) Turn on workdays only and exclude U.S. holidays.
  5. Click Calculate to see total days and a weeks+days breakdown.
Takeaway: If a rule says “between these dates,” use Exclusive. If it says “through the end date,” use Inclusive.

Inclusive vs. Exclusive (plain and simple)

  • Exclusive: neither the start nor the end date is counted.
  • Inclusive: both the start and the end date are counted.

Most schedules and timelines use Exclusive. Streaks, trials, and “up to and including” rules often use Inclusive.

Summary: Choose the mode that matches your policy. That’s how you avoid “off by one” surprises.

Examples

  • June 1 → June 10 (exclusive): 9 days.
  • June 1 → June 10 (inclusive): 10 days.
  • June 1 (Sat) → June 10 (Mon), remove weekends: 6 days.
  • Dec 22 → Jan 2, remove weekends and U.S. holidays: counts only the open office days across New Year.

Quick tip: If your deadline is the end date itself, Inclusive usually matches what people expect.

Edge cases

  • Same start and end date: Exclusive = 0 days; Inclusive = 1 day.
  • Start after end: Swap the dates and run it again.
  • Leap years: Feb 29 is counted if it’s in the range. No extra steps needed.
Need only weekdays? Turn on workdays only. Need true business days? Also turn on exclude U.S. holidays.

Useful links

Start at the Homepage • Learn About Us • Get help on Contact
Related pages: Business Days Calculator • Workday Calculator • Time Between Dates

FAQ

Why is my result off by one?

It’s the counting mode. Exclusive skips both ends. Inclusive counts both. Switch modes and run it again.

Does the calculator handle leap years?

Yes. Leap days are included automatically if they fall inside your date range.

How do I count only weekdays?

Turn on workdays only (Mon–Fri). If you also need to remove federal holidays, turn that option on too.

What time zone is used?

Your device’s local time, so the dates match what you see on your own calendar.

Can I share the result?

Yes. Note the total days and the mode you used (inclusive or exclusive). If you removed weekends or holidays, add that note too.

Page last updated: 2025