Billie Eilish Age And Birthday 2026 — Billie Eilish was born December 18, 2001, making her 24 years old as of mid-June 2026. She turns 25 on December 18, 2026 per People and Biography.com verified records.

Biography.com and People list Billie Eilish's birth date as December 18, 2001, in Los Angeles, California. That Sagittarius birthday anchors every Billie Eilish age and birthday 2026 calculation.

To answer Billie Eilish age and birthday 2026, subtract 2001 from the current year and adjust if today is before December 18. Mid-June 2026 means age 24 because her birthday has not yet arrived.

From teenage SoundCloud uploads at thirteen to Grammy recognition at eighteen and stadium tours in her early twenties, Billie Eilish age and birthday 2026 tracks a compressed multi-era catalog.

Billie Eilish turns 25 on December 18, 2026 — the same date fans mark every year with birthday posts and streaming celebrations. She is 24 throughout mid-June 2026 before that milestone arrives.