Date Difference Calculator
Free tool to calculate the exact difference between any two dates in days, weeks, months, years and approximate working days. Useful for calculating contract durations, leave periods and days remaining until an upcoming event.
| Period | Days | Weeks | Note |
|---|---|---|---|
| 1 Week | 7 | 1 | — |
| Month (avg) | 30.44 | ≈4.3 | Ranges 28-31 |
| Quarter year | 91 | 13 | 3 months |
| Half year | 182 | 26 | 6 months |
| Full year | 365 | 52 | 366 in a leap year |
| Maternity leave (Oman) | 98 | 14 | Per Omani Labor Law |
How do I calculate working days between two dates?
Approximate working days = total days × (5/7). The number shown is an estimate based on a 5-day work week and does not include public holidays.
Why does the years/months result sometimes differ?
Months have different numbers of days (28-31). The calculation uses the real calendar, not a fixed 30-day monthly average, so results may differ from simple manual calculation.
Does the tool count Friday and Saturday as working days?
No, the calculation assumes a 5-day work week. The figure shown is approximate and does not account for official public holidays.
How many days are left until Ramadan?
Press the "Until Ramadan 2027" button and the result will appear immediately in days and months remaining. Ramadan 2027 is expected in February 2027 (approximate astronomical date).
How do I calculate an employment contract duration in days and months?
Enter the contract start date in the "From" field and the end date in the "To" field. The full duration in days, months, years and approximate working days will appear automatically without any manual calculation.
Is the tool suitable for calculating annual leave days?
Yes, it can be used to calculate the number of days between a leave start and end date. It can also be used to calculate elapsed time from your appointment date to today to determine accumulated annual leave balance.
What is the difference between this tool and the Age Calculator?
The date difference calculator measures the gap between any two freely chosen dates. The Age Calculator specialises in calculating age from birthdate to today with additional details like the Hijri calendar and days until birthday.
Can the tool be used to track pregnancy weeks?
It can be used to calculate the number of days/weeks from the first day of the last period. However, for accurate medical pregnancy tracking, always consult a specialist doctor who uses ultrasound, not just arithmetic.
Date Difference Calculator — Practical Uses
This calculator gives the exact number of days, weeks, months and years between any two dates — handling leap years and variable month lengths automatically. It covers dates from 1900 to 2100.
Common uses
- Counting days until a vacation, event or deadline
- Calculating employment duration for HR or end-of-service
- Checking if a visa or residency period has expired
- Finding the number of working days between two dates (count weekdays manually)
Days vs. months: which to use
For precise legal or HR purposes (visa validity, service duration), always use the days count — months and years are approximations since months have unequal lengths. For human-readable summaries ("you have worked here for 2 years and 3 months"), use the year-month breakdown.