🧗 Climbing Grade Converter

The V‑Scale (short for "Vermin Scale") was developed by John "Verm" Sherman in the early 1990s at Hueco Tanks, Texas. It is the standard bouldering difficulty scale used in the United States and many other countries. The scale starts at VB (beginner) and progresses from V0 (easiest) to V17 (currently the hardest established bouldering grade). Each increment represents a noticeable step up in physical difficulty, technique, and often mental commitment.

The Font Scale originated in the Fontainebleau forest near Paris, France — one of the world's most historic bouldering destinations. It uses a combination of numbers and letters (e.g., 6A, 7B+, 8C). The scale ranges from 1 (easiest) to 9A (hardest). A "+" suffix indicates a slightly harder version of that grade (e.g., 7A+ is harder than 7A but easier than 7B). The Font Scale is widely used across Europe and is the official bouldering grade system for international competitions.

The Yosemite Decimal System (YDS) was developed in the 1950s at Yosemite Valley, California, primarily for rating roped climbing routes. The system uses Class 5 for technical rock climbing, with subdivisions from 5.0 (easiest) to 5.15d (currently the hardest). Grades 5.10 and above use letter suffixes (a, b, c, d) for finer distinctions — for example, 5.12a is easier than 5.12d. YDS remains the dominant system in the United States for sport climbing, trad climbing, and big wall routes.

Grade conversion between bouldering and roped climbing is inherently approximate. Bouldering typically focuses on short, powerful sequences (3–8 moves), while roped routes test endurance, route-reading, and mental stamina over longer distances. A V5 boulder problem may feel equivalent to a 5.12a crux move on a rope, but completing an entire 5.12a route requires additional skills beyond pure power. Our converter provides the widely accepted approximate equivalents, but individual experiences will always vary based on climbing style, rock type, and personal strengths.

As of 2025, the hardest confirmed bouldering grade is V17 (Font 9A). The first V17 ever climbed was "Burden of Dreams" in Finland, established by Nalle Hukkataival in 2016. Since then, a small number of other V17 problems have been proposed and repeated, including "Return of the Sleepwalker" (USA) and "Alphane" (Switzerland). Only a handful of the world's elite climbers have climbed at this level. The progression of bouldering difficulty continues to push human limits.

Climbing grade systems evolved independently in different regions before global communication became common. The V‑Scale emerged from the American bouldering scene at Hueco Tanks, while the Font Scale developed organically in France's Fontainebleau forest. Similarly, YDS was born in Yosemite's big wall culture. Other systems also exist: the British Tech Grade (UK), UIAA Scale (Alpine), Ewbank System (Australia/New Zealand), and Japanese Dankyu. Each reflects local climbing traditions, rock types, and historical development. Our converter bridges the three most internationally recognized systems.

Your climbing grade is typically determined by the hardest route or boulder problem you have successfully completed (often called your "redpoint" or "send" grade). Beginners usually start around VB–V2 (Font 2–5+, YDS 5.5–5.10c). Intermediate climbers commonly climb V3–V6 (Font 6A–7A, YDS 5.11a–5.12b). Advanced climbers operate in the V7–V10 range, while expert and elite climbers push into V11+ territory. Remember: grades are consensus-based and can feel different depending on rock type, conditions, and your unique strengths (crimps vs. slopers, power vs. endurance).

Not exactly, though they serve a similar purpose. In the Font Scale, a "+" (e.g., 7A+) indicates a grade that is noticeably harder than the base grade (7A) but not quite hard enough to warrant the next full grade (7B). In YDS, the letters a, b, c, d subdivide each numerical grade into four increments, with 5.12a being easiest and 5.12d being hardest within the 5.12 range. The Font "+" roughly splits the difference between two grades, similar to how YDS "b" or "c" sits between "a" and "d". The systems have different granularity, which is why conversions are approximate.