How old is Tanner Buchanan?
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Tanner Buchanan: 13 facts about the Cobra Kai star you need to know
2. How old is Tanner Buchanan?
Tanner is 21 years old. His birthday is 8 December, and he was born 1998, which means he’ll turn 22 on this birthday. Oh, and if you’re wondering, he’s a Sagittarius. [Rich Polk/Getty Images for IMDb]