Age & date difference calculator
Exact age or time between two dates in years, months and days.
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Years
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Months
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Days
- Total days
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- Total weeks
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- Total months
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Runs locally in your browser. Nothing is uploaded.
How to use
- Enter a start date (for age, your birth date).
- The end date defaults to today; change it if needed.
- See the result in years, months, days and total days.
Questions
Does it account for leap years?
Yes, the calculation uses real calendar dates, so February 29 is handled correctly.