Find the exact calendar gap between two birth dates in years, months, days, and total days.
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Result
Method
Dates are parsed as civil Gregorian dates. The earlier date is identified automatically; completed years and months use month-end clamping, then remaining whole days are counted.
Worked example
The result is identical when the two dates are entered in reverse order.
Important limitation
This compares two birth dates. It provides no zodiac, compatibility, dating-rule, or legal-eligibility advice.