Duration Calculator
Calculate the exact duration between two dates and times. Get the result in years, months, days, hours, minutes, and seconds.
Select a start and end date to calculate the duration.
About the Duration Calculator
This calculator finds the exact duration between any two points in time. It breaks the result down into years, months, days, hours, minutes, and seconds using calendar-accurate month lengths. It also provides totals in each unit (e.g., total hours elapsed) for quick comparison. Useful for project planning, age calculations, deadline tracking, historical research, and event scheduling.
Private & free — this tool runs entirely in your browser.
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