Date Difference Calculator
Calculate the exact number of days, and approximate weeks, between two dates.
Date Difference Calculator
Formula
Difference in days = End Date − Start Date, counted as calendar days.
Examples
- January 1, 2026 to March 1, 2026 = 59 days
- June 15, 2025 to June 15, 2026 = 365 days
- December 25, 2025 to January 1, 2026 = 7 days
How to Use
- Enter the start date.
- Enter the end date.
- Click Calculate to see the total number of days between them.
Frequently Asked Questions
Does it count the start and end date?
The result is the number of full days between the two dates (exclusive count), commonly used for durations and countdowns.
Can I calculate dates in the past?
Yes — enter any two dates in either order; the calculator shows the absolute number of days between them.
Can this calculate business days only?
No — this calculates total calendar days, including weekends and holidays.
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