He is best known for his work on Broadway, originating the roles of Henry in Next to Normal (2008–2011), Boy in Peter and the Starcatcher (2011–2013), and Nino in Amélie (2015–2017).
Chanler-Berat was born in West Nyack, Rockland County, New York, to Shelley Chanler and Bert Berat.
He stayed with the show from its original production at Second Stage Theatre to its closing night on Broadway exactly three years later, being the only cast member to have done so.
In addition to his theatre work, Chanler-Berat has appeared in a number of supporting roles in television and film, beginning with an episode of Law and Order in 2006.
Possibly his most notable on screen role is that of Viggo in Delivery Man, a 2013 movie starring Vince Vaughn.