Date Difference Calculator
Calculate days, weeks and months between two dates.
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Overview
The Date Difference Calculator precisely computes the number of days, weeks, months, and years between two dates. It is useful for determining employment duration, contract length, tenure, pregnancy weeks, and more.
Formula
Date Difference (days) = End Date − Start Date. Weeks = Date Difference ÷ 7. Months and years are calculated based on actual days in each month.
How to Use
- 1Enter the start date.
- 2Enter the end date.
- 3The difference in days, weeks, months, and years is displayed.
- 4Optionally calculate business days only (excluding weekends and holidays).
Tips
- ✔Whether the start date is included or excluded can make a 1-day difference.
- ✔For business day calculations, factor in national holidays for accuracy.
- ✔For tenure calculations, use the hire date as the start and the last day as the end.
- ✔Leap years with 29 days in February are handled automatically.
FAQ
Q. Are both the start and end dates included?
By default, the start date is excluded and the end date is included (e.g., Jan 1 to Jan 3 = 2 days). You can toggle start-date inclusion in the settings.
Q. Can I calculate only business days?
Yes, you can exclude weekends (Saturday/Sunday) and public holidays to see only business days.
Q. Why might the month count seem inaccurate?
Months vary from 28 to 31 days, so simple division may differ from the actual calendar months. This calculator accounts for each month's actual length.
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