Date Difference Calculator
Find the exact calendar difference between two dates in years, months, days, total weeks, days, and hours, with optional inclusive counting.
Calculator collection
Calculate dates, durations, schedules, hours, and pay.
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Find the exact calendar difference between two dates in years, months, days, total weeks, days, and hours, with optional inclusive counting.
Count working days between two dates with configurable weekends, custom holidays, inclusive boundaries, and optional work-hour conversion.
Calculate exact age in calendar years, months, and days, plus completed months, weeks, days, hours, birth weekday, and the next birthday.
Add or subtract calendar years, months, weeks, and days from a date with explicit month-end handling and a localized result date.
Build a seven-day timesheet, subtract unpaid breaks, handle overnight shifts, and estimate regular hours, overtime hours, and gross pay.
Calculate exact elapsed time between two zoned date-times, with seconds, breaks, reversed inputs, and daylight-saving changes.
Convert one local date-time to up to four IANA time zones with daylight-saving offsets, date changes, and ambiguity controls.
Create a live, shareable countdown to an exact date-time in any IANA time zone, with stop-at-zero or count-up behavior.
Convert Unix timestamps and zoned date-times in seconds, milliseconds, microseconds, or nanoseconds without losing integer precision.