Justin Bieber was 15 years old when he released and sang “Baby” in early 2010.

Quick Scoop

How old was Justin when he sang “Baby”?

  • Justin Bieber was born on March 1, 1994.
  • “Baby” was released as a single on January 18, 2010.
  • That means he was still 15 years old at the time of the song’s release and early performances.

So, if you’re wondering “how old was Justin Bieber when he sang Baby?” — the answer fans usually give is: 15 years old , just on the edge of turning 16.

Extra context for fans

  • “Baby” was the lead single from his debut studio album My World 2.0 , which cemented him as a teen pop superstar.
  • The track features rapper Ludacris and quickly became one of YouTube’s most-watched music videos, helping fuel Bieber’s early global fame.

Back in 2010, “Baby” was the song that turned a 15‑year‑old Canadian YouTuber into a worldwide chart-topping pop star almost overnight.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.