FINNEAS Biography: Age, Net Worth, Height, Parents, Partner, Siblings, Albums

Finneas Baird O’Connell is an American singer-songwriter, record producer, and actor, has quietly become one of music’s most in-demand talents, blending whispery introspection with cinematic polish that elevates everything he touches.

Often stepping out from the shadow of his sister Billie Eilish—whose debut single he penned and produced in their childhood bedroom—he’s racked up 10 Grammy wins, two Oscars, and a reputation for crafting hits that feel both intimate and massive, from Selena Gomez’s chart-toppers to his own brooding solo albums like Optimist and For Cryin’ Out Loud!.

Profile

• Full Name: Finneas Baird O’Connell
• Stage Name: Finneas
• Born: July 30, 1997
• Age: 28 years old
• Birthplace: Los Angeles, California, United States
• Nationality: American
• Occupation: Singer-Songwriter, Record Producer, Actor
• Height: 1.83 m
• Parents: Patrick O’Connell and Maggie Baird
• Siblings: Billie Eilish
• Spouse: None
• Partner: Claudia Sulewski
• Children: None
• Relationship: Engaged
• Net Worth: $30 million

Early Life and Education

Finneas Baird O’Connell came into the world on July 30, 1997, in Los Angeles, California, to actor and musician Patrick O’Connell and actress, screenwriter, and singer Maggie Baird.

He grew up alongside his younger sister Billie Eilish in a creative household that hummed with music and theater, and his parents homeschooled both kids to nurture their passions without the constraints of traditional schooling.

Finneas discovered his love for songwriting at age 12 after taking a class with his mom, diving headfirst into Logic Pro to craft demos in his bedroom, and he briefly explored acting with early roles in films and TV. Of Irish and Scottish descent, he keeps his spiritual life low-key, focusing instead on the arts that shaped his upbringing.

Career

Finneas O’Connell cut his teeth in music as the frontman of the indie band The Slightlys, releasing tracks like “Is There Anybody There” that landed on shows such as Switched at Birth and snagged local awards in Los Angeles.

He balanced that with acting gigs, popping up as a student in the Cameron Diaz comedy Bad Teacher at age 14 and co-starring with his mom in the heartfelt indie Life Inside Out, but music pulled him harder—especially after he wrote “Ocean Eyes” for his band and handed it off to Billie when her dance class needed a song.

Uploaded to SoundCloud in 2015, it exploded overnight, drawing a deal with Interscope and kicking off their unbreakable collaboration that turned sibling experiments into global phenomena.

That spark ignited a string of triumphs: Finneas co-wrote and produced Billie’s debut EP Don’t Smile at Me, which cracked the Billboard 200, and her 2019 album When We All Fall Asleep, Where Do We Go?, a brooding masterpiece that topped charts worldwide and swept the 2020 Grammys with wins for Album of the Year, Record of the Year, and Producer of the Year—making him the youngest ever at 22.

He branched out solo with the 2019 EP Blood Harmony, featuring the alt-radio hit “Let’s Fall in Love for the Night,” while scoring tracks for artists like Selena Gomez’s No. 1 smash “Lose You to Love Me” and Camila Cabello’s Romance. Follow-ups like Billie’s Happier Than Ever and their Oscar-winning “No Time to Die” theme cemented his ear for emotional depth, blending lo-fi intimacy with orchestral swells that redefined pop production.

Finneas O’Connell tours arenas with his own wry, piano-driven sets, drawing crowds who hang on lines about love’s quiet chaos from albums like 2021’s Optimist and 2024’s For Cryin’ Out Loud!, while lending his touch to film scores for The Fallout and Pixar’s Turning Red.

His fingerprints appear on cuts for Halsey, Justin Bieber, and Rosalía, and he mentors emerging talents through unpretentious studio sessions that echo his DIY roots. Through it all, he champions vulnerability in craft, influencing a generation of bedroom producers who chase that same raw magic he unlocked with Billie years ago.

Social Media

• Instagram Handle: @finneas
• Facebook Handle: Finneas
• Twitter Handle: @finneas

Personal Life

Finneas O’Connell is currently engaged to his longtime partner, the actress and YouTuber Claudia Sulewski. They got engaged in September 2025 after dating for seven years. They do not have any children, but they have adopted a dog together.

Discography

• Blood Harmony (EP, 2019)
• Optimist (2021)
• For Cryin’ Out Loud! (2024)

Net Worth

Finneas O’Connell has an estimated net worth of $30 million. Royalties from co-writing and producing Billie’s multi-platinum albums and singles form the backbone, rounded out by fees from hits with Selena Gomez and Camila Cabello, solo streaming revenue, tour earnings, and soundtrack deals for films like No Time to Die.