Best known for starring alongside his twin brother Shane Kinsman in the 2003 comedy Cheaper by the Dozen, as well as the film's 2005 sequel Cheaper by the Dozen 2. He began attending Cal Poly San Luis Obispo in 2016.
He and Shane had their acting debuts at the age of 4 in a Tylenol commercial.
The twins played Porter and Preston Scavo on the ABC series Desperate Housewives from 2004 to 2008.
He was born in Southern California to Grant and Jeanette Kinsman.
He and Shane appeared alongside Noah Wyle in an episode of the medical drama ER in 2008.