Time tools
Days Between Dates: Date Interval Calculator
Calculate calendar years, months, days, and total days between two Gregorian dates without time-zone drift.
A date interval has both a calendar breakdown and an absolute day count. From February 28, 2024 to March 1, 2025 is 1 year and 1 day, while 367 complete calendar days pass. This calculator uses plain-date arithmetic, so daylight-saving changes cannot add or remove an hour.
Time tools
Enter two dates to see direction, a years/months/days breakdown, and absolute total days. If the end is earlier than the start, the result preserves the negative direction for backward planning.
Frequently asked questions
Is the start date included?
The default result measures complete date boundaries passed and does not add an extra inclusive day.
Why not divide elapsed hours by 24?
This is Gregorian calendar-date math, not instant duration math, so DST must not affect it.