Free Date Difference Calculator Online – Days, Weeks & Business Days Between Dates
Find years, months, days, weeks, and business days between two dates
Features
- Years, months & days difference
- Total days and weeks
- Business day count (excludes weekends)
- Handles dates in any order
- Free & instant
Frequently Asked Questions
The tool automatically reverses them and calculates the difference either way, with a note that dates were reversed.
No, it counts Monday–Friday only and does not exclude public holidays.
Yes — enter their birth date and today's date (or any target date) to get the exact breakdown, not just the year count.
Yes — total weeks are shown alongside total days, years/months/days, and business days.
Yes — it works the same way for counting forward to a future deadline as it does for calculating a past duration.
How to Use Date Difference Calculator
Using Date Difference Calculator is simple and free. No sign-up required.
- Select the start date.
- Select the end date.
- Click 'Calculate Difference'.
- View years/months/days, total days, weeks, and business days.
About Date Difference Calculator
Date Difference Calculator finds the exact difference between two dates — broken down into years, months, and days, plus total days, total weeks, and business days — useful for calculating someone's exact age, counting down to a deadline, figuring out a project timeline, or determining how many working days fall between two dates.
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