Mouthguard Size Calculator
Find the right mouthguard size (boil-&-bite / custom-fit) for Taekwondo, boxing, MMA — worldwide average from Shock Doctor, OPRO, SISU, Century, etc. Now with jaw width option for better accuracy.
Optional — leave blank if unknown. Helps refine for wide/narrow jaws.
Note: Boil-&-bite mouthguards fit via age + height primarily. Jaw width (measured cheek-to-cheek at corners) refines for unusual mouth shapes. Adult sizes are often universal. Boil & mold properly. Brands vary — check specific chart (e.g., Shock Doctor/OPRO universal adult for most).