Climbing Grade Converter

The Climbing Grade Converter translates rock-climbing difficulty grades between every major system so you can instantly compare routes and problems wherever you climb. For roped routes it converts between the American YDS (Yosemite Decimal System), the French sport scale, the UIAA scale, and the British trad system. For bouldering it converts between the V-scale (Hueco) and the Fontainebleau (Font) scale. Beyond a simple lookup, it places any grade on a visual difficulty ladder, compares it to real-world benchmarks, and explains what each level actually feels like to climb.

Why Climbing Has So Many Grade Systems

Climbing developed independently in different countries, and each region invented its own way to describe how hard a climb is. American climbers use the Yosemite Decimal System, continental Europe favours the French sport grades, German-speaking countries use the UIAA scale, and Britain kept its own two-part trad system. Bouldering split off separately, with North America adopting the open-ended V-scale and Europe using the Fontainebleau scale. Because these systems were never designed to line up, converting between them is always approximate — useful for planning and comparison, but never an exact science.

The Major Climbing Grade Systems

Roped Route Conversion Chart

Approximate equivalents for sport and trad routes across YDS, French, UIAA and British. British trad grades combine an adjectival and a technical grade, so a single value can overlap nearby rows.

Use the converter above for the complete row-by-row chart including every intermediate grade.

Bouldering Conversion Chart (V-Scale to Font)

What Grade Do Most Climbers Climb?

Grade distribution varies by gym and crag, but some rough guideposts help put numbers in context. A first-time climber typically tops out around 5.4–5.6 (Font 4–4b) or boulders VB–V1. After a few months of regular climbing, most people lead in the 5.9–5.10 range (French 5b–6b) and boulder V2–V4 (Font 5+–6B). Dedicated recreational climbers reach 5.11–5.12 (French 6b+–7c) and V5–V8. Grades of 5.13 and above, or V9 and harder, represent expert climbing achieved by a small fraction of the community, while the very top grades are the domain of full-time professional athletes.

How to Use This Calculator

1. Choose your discipline: Select Roped Routes for sport and trad climbing, or Bouldering for boulder problems — this picks the right family of grade systems.
2. Pick the system you know: Choose the scale you already have a grade in, such as YDS, French, V-scale or Font.
3. Select the grade: Pick the exact grade from the dropdown. A live preview shows the equivalents instantly as you choose.
4. Click Convert: See every equivalent grade side by side, the position on the difficulty ladder with real-world benchmarks, and a plain-language description of what the grade feels like.

Frequently Asked Questions

What climbing grade systems does this converter support?

For roped routes it converts between the Yosemite Decimal System (YDS), the French sport system, the UIAA system, and the British trad system. For bouldering it converts between the V-scale (Hueco) and the Fontainebleau (Font) scale.

What is 5.10 in French grades?

YDS 5.10a is roughly French 5c, 5.10b is about 6a, 5.10c is about 6a+, and 5.10d is about 6b. The exact equivalence varies a little because the two systems split difficulty at slightly different points.

How does the V-scale compare to the Font scale?

Roughly, V0 equals Font 4, V3 equals Font 6A, V6 equals Font 7A, V9 equals Font 7C, V12 equals Font 8A+, and V15 equals Font 8C. The V-scale is open-ended and used mainly in North America, while Font grades are common across Europe.

Are climbing grade conversions exact?

No. Grade conversions are approximate. Different systems were designed independently and capture difficulty differently. The British trad grade even encodes how bold or well-protected a route is, not just the physical difficulty, so a single British grade can map to a small range in other systems.

What is the hardest climbing grade in the world?

For roped routes the hardest confirmed grade is 5.15d (French 9c), first climbed on the route Silence. For bouldering the hardest confirmed grade is V17 (Font 9A), first climbed on the problem Burden of Dreams.

What grade do most gym climbers climb?

Most regular gym climbers lead routes around 5.10 to 5.11 (French 6a to 6c+) and boulder around V3 to V5 (Font 6A to 6C). These intermediate grades represent solid, experienced recreational climbing.

Additional Resources

• Grade (climbing) - Wikipedia
• Yosemite Decimal System - Wikipedia