Date Difference Calculator
Calculate the time span between any two dates — in years, months, days, weeks, hours, and minutes. Useful for project timelines, deadlines, and milestones.
Inputs
Total days
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Years / months / days
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Total weeks
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Total hours
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Total minutes
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About Date Difference Calculator
Order doesn’t matter
If you enter the dates in reverse, the calculator treats whichever is earlier as the start. The result is always non-negative.
Inclusive vs exclusive
This counts the gap between dates — so March 1 to March 2 is 1 day. To count both dates (e.g., conference duration), add 1 to the result.
Leap years and DST
Leap days (Feb 29) and daylight-saving transitions are handled automatically since dates anchor to midnight in your local zone.