Date Difference Calculator
Calculate the exact number of days, business days, weeks, and months between any two dates.
Date Range
Total Duration
Until March 17, 2026
21 Work Days
Excluding Weekends
9
Weekend Days
In this time period...
Your heart will beat approximately 3,000,000 times. The Earth will travel 48.0 million miles around the Sun.
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Frequently Asked Questions
Everything you need to know about age calculation logic.
Does this calculator include the end date?
By default, date difference calculations exclude the end date (Start Day = Day 0). However, we provide a checkbox option to 'Include End Date' if you want to count the final day as well.
How are business days calculated?
Business days are calculated by removing Saturdays and Sundays from the total duration. This is essential for project management, shipping estimates, and payroll.
Does this tool account for Leap Years?
Yes. If your date range spans a leap day (February 29th), our calculator automatically includes it in the total day count.
Does 'Business Days' exclude public holidays?
No. The standard calculation only removes weekends (Sat/Sun). Public holidays vary by country and state, so you should subtract those manually from the final 'Business Days' result.
How do I calculate weeks between dates?
Our tool does this automatically. We divide the total days by 7 to give you the exact number of weeks. For example, 14 days is exactly 2.0 weeks.