Age from Date of Birth
Calculate age in completed years from date of birth.
Age
36 years
Days since birth (exclusive)
13355
Age in completed years (calendar). Day count is the exclusive date difference (birth → today).
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Methodology
Age = completed calendar years; days since birth is an exclusive date difference.
Example: Born 1990-01-15, today 2026-08-09 → 36 years
Methodology
Age = completed calendar years; days since birth is an exclusive date difference.
Example
Born 15 Jan 1990, today 9 Aug 2026 → 36 years.