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Days Between Dates

Enter two dates to count exactly how many days lie between them, with an option to include the end date in the total.

Days Between Dates
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What Does This Tool Count?

This tool counts the number of whole days between a start date and an end date. By default it counts the gap between the two dates (an exclusive count); ticking "include the end date" adds one extra day, which is useful when you're counting things like the total length of a stay or event.

Example Calculation

From 10 August 2026 to 20 August 2026 is 10 days (or 11 days if the end date is included).

Formula / Calculation Method

Days = round((End Date − Start Date) ÷ 1 day), plus 1 if the end date is included.

How to Use This Tool

  1. Enter a start date and an end date.
  2. Tick "include the end date" if you want an inclusive count.
  3. Click Count Days to see the result in days and as weeks + days.

Common Use Cases

Counting nights or days of a trip or hotel stay
Working out how many days until a deadline
Calculating billing or rental periods
Tracking countdowns to events

Related Tools

Date Difference CalculatorCalculate the exact number of years, months and days between two dates. Age CalculatorFind your exact age in years, months and days from your date of birth.

Frequently Asked Questions

What's the difference between this and the Date Difference Calculator?

This tool focuses purely on a total day count (with an optional inclusive option), while the Date Difference Calculator breaks the gap down into years, months and days.