Days Between Dates Calculator
Calculate the exact number of days between two calendar dates.
About the Days Between Calculator
Sometimes all you need is the raw day count between two dates — no years-and-months breakdown, just a single number of days — for scheduling, billing periods, or tracking a countdown. This calculator gives you exactly that.
How It Works
The calculator takes the two dates you enter, converts each to a precise point in time, and computes the absolute number of whole days between them regardless of which date comes first.
Days Between = |End Date − Start Date|, measured in whole calendar days.
Worked example
Scenario: Counting from January 1, 2026 to March 1, 2026.
- January has 31 days: January 1 → February 1 = 31 days.
- February 2026 has 28 days: February 1 → March 1 = 28 days.
- Days between: 31 + 28 = 59. Counting both dates gives 60.
Result: 59 days between the dates, or 60 if both dates are counted.
Tips and common mistakes
- Choose 'Count both start and end date' for things like hotel nights versus event days, or when a rule says 'inclusive'.
- Rental and loan periods usually exclude the start date; event durations usually include both days.
- Daylight-saving changes don't affect the count because whole calendar days are used.
Assumptions & Limitations
- The result is always reported as a positive number, regardless of the order the two dates were entered.
- Both dates are treated as midnight local calendar dates, with no time-of-day component.
- Counts weekends and holidays like any other day — use the Business Days Calculator to exclude them.
Inclusive and exclusive date counting
Date ranges can be counted exclusively or inclusively. Exclusive counting measures the elapsed days between two dates. Inclusive counting also counts the starting date, which is common for trips, attendance, bookings, and some reporting periods.
Practical example
From Monday to Tuesday is one elapsed day. If both Monday and Tuesday are counted as included dates, the inclusive count is two days.