Climbing grading systems are generally separated into three categories, with straight-forward translation within a category, and constrained translations between categories. Different grading systems are not perfectly aligned only rough translations can be made, especially since the act of grading itself is subjective. # Categories ## Sport/Trad The system used in the US is called YDS (Yosemite Decimal System). ![[Free Climbing Grading Conversion Chart.pdf]] ## Bouldering The system used in the US is called the V-Scale (Verm or Vermin). ## Mountaineering # Sport/Trad <-> Bouldering We can roughly convert between V-Scale and YDS. ![[Sport Trad vs Bouldering Grades.png]] # Gym <-> Outdoor Bouldering Outdoor bouldering routes are generally two grades more difficult than gym bouldering routes. ![[Gym vs Outdoor Bouldering Grades.png]]