Ewbank to YDS grade conversion chart
Every Ewbank grade with its YDS equivalent, side by side. Where the two scales don't line up, you'll see a range.
Key conversions
- 16 = 5.8
- 18 = 5.10a
- 20 = 5.10c/d
- 22 = 5.11b
- 24 = 5.11d/5.12a
- 26 = 5.12c
- 28 = 5.13a
- 30 = 5.13c
- 32 = 5.14a
- 35 = 5.14d
| 13 | 5.6 | 4a/ | IV/ |
|---|---|---|---|
| 14 | 5.7 | 4b/ | IV+/ |
| 15 | 5.7 | 4c | V− |
| 16 | 5.8 | 4c+/ | V/ |
| 17 | 5.9 | 5b/ | V+/ |
| 18 | 5.10a | 5c/ | VI/ |
| 19 | 5.10b | 6a+ | VII− |
| 20 | 5.10c/ | 6b/ | VII/ |
| 21 | 5.11a | 6b+/ | VII+/ |
| 22 | 5.11b | 6c/ | VII+/ |
| 23 | 5.11c/ | 6c+/ | VIII−/ |
| 24 | 5.11d/ | 7a+ | VIII+ |
| 25 | 5.12b | 7b | VIII+/ |
| 26 | 5.12c | 7b+ | IX− |
| 27 | 5.12d | 7c | IX |
| 28 | 5.13a | 7c+ | IX+ |
| 29 | 5.13b | 8a | X− |
| 30 | 5.13c | 8a+ | X |
| 31 | 5.13d | 8b | X+ |
| 32 | 5.14a | 8b+ | X+/ |
| 33 | 5.14b | 8c | XI− |
| 34 | 5.14c | 8c+ | XI |
| 35 | 5.14d | 9a | XI |
| 36 | 5.15a | 9a+ | XI/ |
| 37 | 5.15b | 9b | XI+ |
| 38 | 5.15c | 9b+ | XI+/ |
| 39 | 5.15d | 9c | XII− |
Approximate. Conversions by OpenBeta sandbag; British from RockFax/theCrag tables.
About these grades
Ewbank is the open-ended number scale used in Australia, New Zealand and South Africa (18, 21, 25…).
The Yosemite Decimal System (YDS) is used in North America. Roped climbs run from 5.0 to 5.15d, with letters a to d from 5.10 up.