Date Difference Calculator
Calculate total days, weeks, months, and weekdays between two calendar dates.
Total Difference
30 days
—
Weeks & Days
4 wks 2 days
Approx. Months
1 month
Business Days (Mon-Fri)
22 days
How to Calculate Duration Between Two Dates
- Select the Start Date.
- Select the End Date.
- View total calendar days, elapsed weeks, months, and duration breakdown instantly.
Date Duration Calculation
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Total Days = (Date₂ - Date₁) / (1000 × 60 × 60 × 24)taking into account daylight saving shifts.
Example
-
Start:
January 1| End:March 31=90 days (or 89 in non-leap years).
Common Applications
- Rental lease and accommodation contract lengths.
- Project milestone duration and sprint tracking.
- Insurance policy validity and warranty windows.
Frequently Asked Questions
Does this include the end date in the total count?
Standard date difference calculates full intervening days. You can optionally include the end day if desired.
Can I calculate backwards from a past date?
Yes, order does not matter; it computes the absolute interval between both points in time.