Date Duration Calculator
Count the exact time between any two dates — in days, weeks, months, or years plus remainder.
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Total days—
Total weeks—
Total months—
Common questions
Are both the start and end dates counted?
The result counts full 24-hour days between the two dates — the same convention used by most duration tools.
Does it handle leap years?
Yes. February 29 is counted as a real day whenever it falls inside your range.
What is it useful for?
Project timelines, pregnancy week tracking, contract durations, event planning and historical research.