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Grades and Grade Conversions

Grade systems are almost as old as climbing itself. 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 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. 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.

Even today, many grade systems are confined to certain geographical areas, sometimes climbing areas (e.g. Saxon, Fountainbleau), 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.

Most grade systems are specific to a certain style. 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. 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.

For 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.

Together with the rock climbing community theCrag has developed and continues to develop a comprehensive and intuitive coverage of grades in the system. As such we welcome feedback on grades and new developments in that area. 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.

Grade conversionsBack to contents

theCrag automatically converts grades between different grade systems according to the tables below. theCrag does so by using an open ended and fine-grained internal grade conversion system with more than 500 grade levels allowing to reflect the subtleties of most known grade systems and their conversion from and into each other.

If you have an account on theCrag, you can set your preferred grade system for major gear styles on your profile page, allowing you to look at any climbing area worldwide in the grade system you are most used to. You may also simply convert a single grade using the interactive grade converter here below.

Interactive grade converterBack to contents

Grade context:

Gear style:

Your input:

Convert to grading system:

Converted grade:

Trad and sport grade systemsBack to contents

Band
Ewbanks
YDS
NCCS Scale
French
British Tech.
UIAA
South African
Old South African
Saxon
Finnish
Norwegian
Polish
Brazil Technical
Swedish
Beginner
Intermediate
Experienced
Expert
Elite
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10a
5.10b
5.10c
5.10d
5.11a
5.11b
5.11c
5.11d
5.12a
5.12b
5.12c
5.12d
5.13a
5.13b
5.13c
5.13d
5.14a
5.14b
5.14c
5.14d
5.15a
5.15b
5.15c
5.15d
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
F16
1a
1a+
1b
1b+
1c
1c+
2a
2a+
2b
2b+
2c
2c+
3a
3a+
3b
3b+
3c
3c+
4a
4a+
4b
4b+
4c
4c+
5a
5a+
5b
5b+
5c
5c+
6a
6a+
6b
6b+
6c
6c+
7a
7a+
7b
7b+
7c
7c+
8a
8a+
8b
8b+
8c
8c+
9a
9a+
9b
9b+
9c
1a
1b
1c
2a
2b
2c
3a
3b
3c
4a
4b
4c
5a
5b
5c
6a
6b
6c
7a
7b
7c
1-
1
1+
2-
2
2+
3-
3
3+
4-
4
4+
5-
5
5+
6-
6
6+
7-
7
7+
8-
8
8+
9-
9
9+
10-
10
10+
11-
11
11+
12-
12
12+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
E1
E2
E3
F1
F2
F3
G1
G2
G3
H1
H2
H3
I1
I2
I3
J1
J2
J3
I
II
III
IV
V
VI
VIIa
VIIb
VIIc
VIIIa
VIIIb
VIIIc
IXa
IXb
IXc
Xa
Xb
Xc
XIa
XIb
XIc
XIIa
XIIb
XIIc
1-
1
1+
2-
2
2+
3-
3
3+
4-
4
4+
5-
5
5+
6-
6
6+
7-
7
7+
8-
8
8+
9-
9
9+
10-
10
10+
11-
11
11+
12-
12
12+
1-
1
1+
2-
2
2+
3-
3
3+
4-
4
4+
5-
5
5+
6-
6
6+
7-
7
7+
8-
8
8+
9-
9
9+
10-
10
10+
11-
11
11+
12-
12
12+
I-
I
I+
II-
II
II+
III-
III
III+
IV-
IV
IV+
V-
V
V+
VI-
VI
VI+
VI.1
VI.1+
VI.2
VI.2+
VI.3
VI.3+
VI.4
VI.4+
VI.5
VI.5+
VI.6
VI.6+
VI.7
VI.7+
VI.8
VI.8+
VI.9
VI.9+
I
Isup
II
IIsup
III
IIIsup
IV
IVsup
V
Vsup
VI
VIsup
VIIa
VIIb
VIIc
VIIIa
VIIIb
VIIIc
IXa
IXb
IXc
Xa
Xb
Xc
XIa
XIb
XIc
XIIa
XIIb
XIIc
1-
1
1+
2-
2
2+
3-
3
3+
4-
4
4+
5-
5
5+
6-
6
6+
7-
7
7+
8-
8
8+
9-
9
9+
10-
10
10+
11-
11
11+
12-
12
12+

Bouldering grade systemsBack to contents

Band
V-Scale
B-Scale
S-Scale
P-Scale
Joshua Tree Scale
Fontainebleau
Annot B-Scale
Font Traverse
Beginner
Intermediate
Experienced
Expert
Elite
VB-
VB
VB+
V0-
V0
V0+
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
V17
B5.6
B5.7
B5.8
B5.9
B5.10
B5.10+
B1-
B1
B1+
B2-
B2
B2+
B3
S1-
S1
S1+
S2-
S2
S2+
S3-
S3
S3+
S4-
S4
S4+
S5-
S5
S5+
S6-
S6
S6+
P0
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
A-
A
A+
B-
B
B+
C-
C
C+
D-
D
D+
1A
1A+
1B
1B+
1C
1C+
2A
2A+
2B
2B+
2C
2C+
3A
3A+
3B
3B+
3C
3C+
4A
4A+
4B
4B+
4C
4C+
5A
5A+
5B
5B+
5C
5C+
6A
6A+
6B
6B+
6C
6C+
7A
7A+
7B
7B+
7C
7C+
8A
8A+
8B
8B+
8C
8C+
9A
9A+
9B
9B+
9C
9C+
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
1A
1A+
1B
1B+
1C
1C+
2A
2A+
2B
2B+
2C
2C+
3A
3A+
3B
3B+
3C
3C+
4A
4A+
4B
4B+
4C
4C+
5A
5A+
5B
5B+
5C
5C+
6A
6A+
6B
6B+
6C
6C+
7A
7A+
7B
7B+
7C
7C+
8A
8A+
8B
8B+
8C
8C+
9A
9A+
9B
9B+
9C

Other grade systemsBack to contents

Band
Aid
Aid
Aid
Alpine Ice
Water Ice
Mixed Rock/Ice
Ferrata Schall
Ferrata Num
Ferrata French
Scottish Winter Technical
Beginner
Intermediate
Experienced
Expert
Elite
M0
M1
M2
M3
M4
M5
M6
M7
M8
M9
M10
M11
M12
A0
A0+
A1
A1+
A2
A2+
A3
A3+
A4
A4+
A5
A5+
A6
C0
C0+
C1
C1+
C2
C2+
C3
C3+
C4
C4+
C5
C5+
C6
AI1-
AI1
AI1+
AI2-
AI2
AI2+
AI3-
AI3
AI3+
AI4-
AI4
AI4+
AI5-
AI5
AI5+
AI6-
AI6
AI6+
AI7-
AI7
AI7+
AI8-
AI8
AI8+
WI1-
WI1
WI1+
WI2-
WI2
WI2+
WI3-
WI3
WI3+
WI4-
WI4
WI4+
WI5-
WI5
WI5+
WI6-
WI6
WI6+
WI7-
WI7
WI7+
WI8-
WI8
WI8+
M1
M2
M3
M4
M5
M6
M7
M8
M9
M10
M11
M12
A
B
C
D
E
F
1
2
3
4
5
6
F
PD
AD
D
TD
ED
1
2
3
4
5
6
7
8
9
10
11

To learn more about grades, grade contexts, grade systems used per country, protection ratings, universal grade conversion and how theCrag assigns grades to routes and ascents, please refer to the article Grades on theCrag.

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