Days Between Dates Calculator
Calculate the exact time difference between two dates in years, months, weeks, and days.
Select Dates
Duration Result
is the difference between the two dates
Does the days-between-dates result include the end date?
Use the include-end-date option when the final calendar day should count. Without it, a date compared with itself has a zero-day difference. This tool counts calendar days; it does not remove weekends or public holidays.
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How to use this calculator
About Date Duration
The Date Duration Calculator is a versatile tool designed to measure the precise amount of time between any two dates. Whether you are planning a project, tracking a milestone, or counting the days until a special event, this tool provides a comprehensive breakdown.
Our calculator goes beyond simple day counting by providing a human-readable format (years, months, weeks, and days) as well as total counts for different units of time.
Calculation Methods
Standard Difference
Calculates the time elapsed from the start date to the end date. The end date itself is typically not counted as a full elapsed day unless specified.
Inclusive Counting
If you enable "Include end date", the tool adds one extra day to the calculation. This is common in project management where both the start and end dates are workdays.