Count exact calendar days, weeks, and hours between two dates with optional end date inclusion.
Result
Exclusive mode measures 24-hour periods elapsed between dates.
Save as
Days = |End Date - Start Date| (+1 if inclusive)
1 January 2026 to 31 March 2026 (inclusive).
Total days: 90 days | Breakdown: 12 weeks and 6 days | 2,160 hours.
Calculate exact days, weeks, months, and calendar difference between two dates.
Open calculatorFind exact age from date of birth to today or any selected date.
Open calculatorCalculate attendance percentage and classes needed to reach 75% or 80% university criteria.
Open calculatorCalculate total business and working days between two dates excluding weekends and custom holidays.
Open calculatorExclusive calculation measures elapsed time between dates (e.g. from Monday to Tuesday is 1 day). Inclusive calculation counts both dates as working or active days (e.g. Monday to Tuesday is 2 days).
Yes. It accurately accounts for leap years, including February 29 in leap years such as 2024, 2028, and beyond.
Calculating days between dates is critical for project deadlines, rental agreements, notice periods, and statutory legal filings. Selecting inclusive mode ensures full-day accounting when billing spans both terminal dates.