Jillian Michaels is 51 years old as of 2026.

Quick Scoop

  • Jillian Michaels was born on February 18, 1974, in Los Angeles, California.
  • That birthdate makes her 51 years old in early 2026.
  • She is best known as a celebrity trainer from “The Biggest Loser” and as a fitness author and media personality.

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