Ewing was born in Manly and grew up in Forestville near Sydney, Australia and is the eldest of four children. He attended Marist College North Shore where he performed in musicals years throughout high school. He is the first ever professional actor in his family and trained with John Gibson in Sydney's North Shore. Ewing has two tattoos on his right arm. The first is a Southern Cross as a mark of respect to his ancestors who fought in two World Wars. The second says Carpe Diem, which directly translates as "Seize the Day". Ewing's interpretation is "Have a crack".
At 183cms and 82 kg, Ewing is an accomplished sportsman. He played Representative Basketball for Manly-Warringah for nine years. This period included two NSW state championships and tours of the US and Canada. Ewing represented his school in basketball, soccer, rugby, cheerleading, tumbling, swimming and volleyball. Ewing has played soccer for Forest Killarney Football club since the age of six. Ewing was awarded with a NIDA scholarship in 2008 
Ewing became engaged to his girlfriend, Marni Little, in September 2011.
 CareerEwing appeared in Home and Away as Reuben Humphries. He has also had guest roles in Blue Water High, Spirited and Rescue: Special Ops. Ewing secured a role as Dillon the Black RPM Ranger in the kid's television series Power Rangers: RPM.
In September 2010, Ewing joined the cast of Home and Away again, this time as Heath Braxton. The actor made his debut in February 2011.
Ewing was a contestant in the 2011 season of Dancing With The Stars on Channel Seven. He was partenered with Luda Kroiter and both were eliminated in week five. Ewing danced in support of the St Vincent de Paul Society, where his mother works.