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CFOTD

Tool

Celebrity age gap calculator

Pick any two celebrities and see exactly how far apart they were born, who is older, and how old one was when the other was born.

  • Marilyn Monroe is older than Brian Dennehy by 12 years, 1 month and 8 days.
  • When Brian Dennehy was born, Marilyn Monroe was 12.
  • On August 16, 1950, Marilyn Monroe was exactly twice as old as Brian Dennehy.
  • Marilyn Monroe is Gemini and Brian Dennehy is Cancer.

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Famous age gaps

Birth dates and details from Wikidata (checked October 15, 2026, newest names added October 27, 2026). Ages update every day. Photos are freely licensed and credited on each profile. How we build this site · Report a mistake