Find the difference in years, months, days, weeks, hours, minutes, and seconds. You also get inclusive count, business days, weekend days, milestone dates, and clean readable summaries in one place.
Core duration, direction, calendar count, and workday insights.
Years, months, days, hours, minutes, and seconds.
Shows whether the end is after or before the start.
Counts both selected boundary dates when enabled.
Estimated using your selected workweek.
Saturday and Sunday count in the interval.
Quick explanation of the selected range.
Helpful checkpoints inside the selected duration.
—
—
—
—
—
Useful for planning, reporting, timekeeping, and dev workflows.
A date difference can mean elapsed clock time, calendar units, inclusive days, business days, or work hours. Enter start and end dates and optional times, choose the calculation mode and work assumptions, then check date order, local time zone, daylight-saving transitions, leap years, weekends, and excluded holidays.
From one midnight to the next is one elapsed day, while an inclusive count can label both calendar dates and report two days. Years-months-days decomposition follows calendar boundaries and is not interchangeable with total hours. Choose the rule used by the form, contract, deadline, or plan.
A day is not always 24 elapsed hours in a zone that moves clocks. If the page uses browser-local time, confirm the intended location and offset. For cross-zone meetings or technical timestamps, convert both instants through named time zones or UTC rather than subtracting wall-clock labels.
A five- or six-day workweek estimate can count regular weekdays, but public holidays, leave, shift work, partial days, and local calendars need separate rules. Milestone dates are mathematical projections. Use the responsible organization's calendar for legal, payroll, service-level, or benefits deadlines.
Write down the counting convention and time zone with the result.
Inclusive counting labels both the start and end calendar dates, while elapsed days measure the boundaries crossed between them.
No. Calendar months vary from 28 to 31 days. Calendar-unit results and total-day results therefore describe the interval differently.
A basic workweek calculation usually excludes selected weekend days only. Check the page result and apply the relevant holiday calendar separately.
A local time zone can move clocks for daylight saving, causing an elapsed interval across the transition to differ from 24 hours.
Calendar calculations include February 29 when it falls in the interval. Review anniversary and year-month-day wording around that date.
Do not rely on a general calculator alone. Jurisdictions can define inclusivity, holidays, time zones, service rules, and extensions differently.