Date Duration Calculator
Calculate the exact number of days, weeks, and months between any two calendar dates with or without including the end date.
Date Subtraction Widget
Reversed dates show a negative duration. Including the end date adds one day to the absolute interval in either direction. Calendar months clamp to the last day of shorter months.
Calculation Result
Enter inputs above and click Calculate to view results.
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About Date Duration Calculator
The Date Duration Calculator measures the distance between two calendar dates. It determines the difference in terms of years, months, weeks, and days. It is built to resolve billing cycles, project timelines, and vacation countdowns.
Note on inclusive dates: Checking the 'include end date' option adds exactly one day to the calculations, representing the full duration including both the starting day and ending day of the period.