5 Shocking Facts About Tanner Buchanan’s Height, Weight, And His Cobra Kai Transformation

The question of Tanner Buchanan’s exact height has been a persistent source of fan curiosity, especially given the intense martial arts action and on-screen dynamics of the hit series *Cobra Kai*. As of December 2025, the young actor, who has captivated audiences as the troubled but talented Robby Keene, continues to see his physical statistics debated across the internet, with figures ranging from 5’6” to 5’9”. This deep dive finally cuts through the speculation to reveal the most accurate, verified details about his stature and the impressive physical transformation he has undergone for his career.

The fascination with the *Cobra Kai* star's size is not just about a number; it’s about understanding the impressive athleticism and screen presence he brings to his roles, which often makes him appear taller or shorter depending on his co-stars. Beyond his physical measurements, the 26-year-old actor has had a significant year in 2025, not only wrapping the highly anticipated final season of *Cobra Kai* but also announcing major personal news that has put him back in the spotlight.

Tanner Buchanan: Complete Biography and Physical Stats

Tanner Buchanan, known globally for his complex portrayal of Robby Keene, has built a solid career that spans dramatic television, comedy, and film. His journey from a young actor in Ohio to a martial arts star in Hollywood is a testament to his dedication to the craft. This is his up-to-date biographical profile, including the most frequently cited physical statistics.

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• Full Name: Tanner Emmanuel Buchanan
• Date of Birth: December 8, 1998
• Age (as of Dec 2025): 27 Years Old
• Birthplace: Lima, Ohio, USA
• Nationality: American
• Profession: Actor, Martial Artist (Trained)
• Key Roles: Robby Keene (*Cobra Kai*), Leo Kirkman (*Designated Survivor*), Mason Kendall (*Game Shakers*), Cameron Kweller (*He’s All That*)
• Official Height (Most Cited): 5 feet 8 inches (5' 8") or 173 cm
• Weight (Approx.): 145 lbs (66 kg)
• Eye Color: Green
• Hair Color: Brown (often dyed blonde for roles like Robby Keene)
• Relationship Status (UPDATED 2025): Engaged to actress Mary Mouser (Sam LaRusso in *Cobra Kai*). The couple confirmed their engagement in early 2025, sparking widespread excitement among fans of the show.

The Truth Behind Tanner Buchanan’s Conflicting Height Measurements

The most common source of fan confusion revolves around whether Tanner Buchanan is 5’6”, 5’8”, or 5’9”. The inconsistency is a common issue for celebrities, as measurements can vary between self-reporting, agency listings, and fan-run sites. The reality is that the most authoritative sources, including industry-specific profiles, consistently list his height as 5 feet 8 inches (173 cm).

However, the lower figure of 5 feet 6 ½ inches (168.9 cm) is also frequently cited on popular fan measurement sites. This slight variation can be attributed to a number of factors:

• Screen Illusion: On *Cobra Kai*, his character Robby Keene often shares scenes with taller actors like William Zabka (Johnny Lawrence) and Martin Kove (John Kreese), which can make him appear shorter by comparison.
• Footwear: The type of footwear worn during public appearances or on set can easily account for an inch or two difference, leading to conflicting reports.
• The 5’9” Discrepancy: Some sources round up his height to 5’9” (175 cm), which is a common practice in celebrity reporting to place him just above the average male height in the US.

Ultimately, the 5’8” measurement is the most reliable figure for the actor. This height gives him a balanced, athletic build, perfect for the demanding physical role of Robby Keene, where agility and speed are more crucial than sheer size.

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The Physical Toll of Robby Keene: Training and Weight

Tanner Buchanan’s physical statistics—his 5’8” height and approximately 145 lbs weight—are not just random numbers; they are the result of intense preparation for the *Cobra Kai* universe. The role of Robby Keene demands a high level of physical fitness, incorporating complex martial arts choreography, gymnastics, and dramatic fight sequences. This is not a typical Hollywood role; it requires genuine martial arts skill.

Buchanan has spoken openly about the rigorous training regimen he undertook to convincingly play the part of a skilled karate student. His training involved a mix of traditional martial arts, strength training, and conditioning to maintain a lean, muscular physique. This commitment to physical transformation is a key reason why his on-screen presence is so dynamic, regardless of his exact height.

Recent Career Highlights and Life Updates in 2025

As the curtains close on the final season of *Cobra Kai*, Tanner Buchanan has been busier than ever, moving into new projects and celebrating major personal milestones. His recent activities highlight his growing status as a versatile young star:

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• *Cobra Kai* Season 6 Finale: The highly anticipated conclusion to the series, which sees Robby Keene's story come to an end, was a major focus of his professional life in 2024 and 2025.
• Icon and Numero Netherlands Photoshoots: In late 2024, Buchanan completed two high-profile photoshoots for *Icon* and *Numero Netherlands* magazines, showcasing a more mature and fashionable side of the actor outside of his martial arts uniform.
• Engagement to Mary Mouser: The announcement of his engagement to co-star Mary Mouser in early 2025 was a massive news story. The relationship, which blossomed off-screen despite their characters Sam and Robby often being rivals or ex-partners, solidified them as one of Hollywood's most beloved young couples.
• Podcast Appearances: He continues to engage with fans and media, including a July 2024 appearance on the "Dancer in a Dojo" podcast, where he discussed his journey and craft.

From his consistent 5’8” stature to his disciplined training and his recent personal news, Tanner Buchanan remains a compelling figure in pop culture. His work as Robby Keene has cemented his place as a talented dramatic and action actor, and his commitment to his craft—both physically and professionally—promises a long and successful career beyond the dojo.