Two scales, no single standard: how to read the Schall and Hüsler grading systems correctly and find the via ferrata that matches your level.
There is no single, globally standardised via ferrata scale — in the Alps, two systems dominate: the letter scale A to E/F by Kurt Schall (mainly Austria) and the number scale K1 to K6 by Eugen Hüsler (mainly Switzerland). Sounds confusing, but it is quick to learn — and crucial to making your next tour a success story instead of a blockage that ends with mountain rescue.
The honest rule of thumb for beginners, in case you missed it in the first guide of this series: A or K1/K2. Anything above that already demands noticeable arm strength and climbing experience you should build up first.
A means easy, well-secured paths with short exposed sections; B means steeper, rockier terrain; C means steep to very steep terrain with small footholds; D means vertical, often overhanging terrain with widely spaced rungs — here you already need noticeable arm strength; E is practically continuously overhanging and only for very experienced via ferrata specialists.
K1 roughly matches a well-secured, wide path with steps; K2 has the first short, protected steep steps; K3 partly runs through steep, exposed rock; K4 becomes vertical with short overhangs and smaller footholds; K5 is long, strength-sapping and steep to slightly overhanging; K6 is practically just steel cable with no rungs, extremely demanding.
Even between guidebooks, the same route can differ by half a grade — scales are orientation, not a contract. Also read length, elevation gain and approach time, not just the letter or number.
Do several A/B tours before switching to C. The jump from B to C is noticeably bigger than from A to B, because this is the first time real arm strength is required.
Being overwhelmed by a route chosen too hard is, per DAV analysis, the most common trigger for via ferrata rescue call-outs — more than half of all reported cases are "blockages", where people are unhurt but overwhelmed and can go neither forward nor back. When in doubt, pick the easier option — a via ferrata is not going anywhere, and it will still be there next year.
Also keep in mind: the grade describes technical difficulty, not the psychological load of exposure. Some people handle C technically with ease but get unsettled on exposed B sections with a long drop below — that is a completely different factor from pure climbing difficulty.
After every tour, note how the grade actually felt compared to the guidebook rating. After three or four tours you develop a feel for whether you are "hard at the bottom" or "comfortably at the top" of your current level — that is more precise than any scale. Keep these notes as a short list on your phone; it will still help with tour planning years later.
A or K1, ideally on a short tour with good access. Only once that feels safe and relaxed do you move up a grade.
Roughly yes: A matches roughly K1, B roughly K2, and so on — but the conversion is not exact, because both scales weight different criteria. Rely on the detailed description rather than a pure letter-number conversion.
It depends on fitness and frequency, but realistically most beginners need several tours per grade before the next step feels safe rather than risky. Better to progress slowly than skip a grade.
Turn back as soon as the option arises — many routes have emergency exits. Retreat is not a disgrace, it is the right decision before a blockage or a fall develops from it.
Always your own level. A group is only as strong as its weakest member — plan the tour around the least experienced person, not the average or the strongest climbers.
Via Ferrata with Kids: When and with What Gear