Climbing Grade Converter is a simple tool used to help rock climbers understand the different grading systems used around the world. Currently the app converts between 16 different climbing grading systems including bouldering systems.

Keep in mind that climbing grades are subjective and are agreed upon by a consensus. Also, there is disagreement on how certain systems convert to other systems since different systems take into account different factors (i.e. hardest move, overall difficulty, etc). I've attempted to compile all data I could find to create the most comprehensive conversion tool I could.

Grading Systems Included:
Yosemite (YDS)
British Adjectival
UIAA (Central Europe)
Ewbank (Australia)
South Africa
Ogawayama (Bouldering)
Fontainebleau (Bouldering)
Hueco (Bouldering)
Toyota (Bouldering)

Note: Grading system selection list is only available with the full version in-app upgrade. Otherwise the app is limited to only the Yosemite Decimal System (USA).

What’s New

Version 2.22

• Support for iOS 7
• Climbing Grade Converter is now a Universal App (supports iPad)
• Various bug fixes and enhancements

Ratings and Reviews

gur_yan_off ,

Inaccurate and not handy

The grades are subjective by nature. They can vary from place to place. But I've climbed in Europe and USA and from my experience this app doesn't provide correct conversion.
Usually 5.9 is considered to be rather 5c than 6a which usually corresponds to 5.10a.
As for bouldering, V2 is way too easy to be 6a+, V3 is too easy to be 6c, and so on.
And finally, it doesn't make many sense to compare routes and bouldering. Well, one can be interested how difficult the most hard move is in the route. But from this point of view this app is completely misleading. For instance, 5.10c corresponds to V1.. Have you ever climbed at all?? :)
It would be better to display route and bouldering grades separately, and allow to choose the grading system to scroll.

Dvsbenz ,

Needs changes

First off you can only scroll through the Y.D. Rating which makes it difficult when your trying to do bouldering rating conversions. Be better if you had the option to also scroll through v grades and split up into sport and bouldering because can't really say that a v8 is ~ 5.13

Grubio11 ,


It's a fun little tool to use when you are climbing outside the US or watching a climbing movie with a different rating system. And it's also free.


Blue Fusion Technologies, LLC
5.8 MB

Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2013 Blue Fusion Technologies, LLC
In-App Purchases
  1. Full Version Unlock $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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