TheCrag automatically converts grades between different grade systems according to the tables below. However, for this to be useful to the community as a whole we encourage you to record suggestions and criticism onto our Issues list so that the whole community can constructively contribute. As such we welcome feedback on grades and new developments in that area. Together with the rock climbing community theCrag has developed and continues to develop a comprehensive and intuitive coverage of grades in the system. The reason being that the width of grades on a specific scale are not comparable or that grades are not linear across the whole scale.įor you as a climber this means, that it might be sometimes quite tricky to accurately convert a specific grade from one grade system into another one for us as a global information and services provider it is a challenge to display all grade information in the context the user wants to see it and use it accurately for rating and ranking purposes. There are grade systems for bouldering, grade systems for sport climbing, grade systems for aid climbing and so on but even grade systems for the same style don’t always translate well between each other. Most grade systems are specific to a certain style. Saxon, Fontainebleau), mostly countries (South African, Brazilian, French, etc.) or even continents (Ewbanks, YDS) and sometimes they got exported to and established themselves in different areas making some grade systems more ubiquitous than others. For example the now called UIAA grade system had a top grade of VI (six), meaning that everything harder than VI was simply assigned a VI until it was finally opened up in the late 1970s.Įven today, many grade systems are confined to certain geographical areas, sometimes climbing areas (e.g. Grade systems initially developed in confined geographical areas, making the comparison of climbs somewhat easier, developed over time and were and are constantly extended as climbers manage to ascent harder and harder climbs. Assigning a difficulty to a climb seems to be at least as important as describing it with other characteristic parameters such as length, protection or rock type. Grade systems are almost as old as climbing itself.
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