Climbing grade conversion chart and calculator
Convert any route or boulder grade between French, YDS, UIAA, Font and V-scale. Then see your own climbs in the grade system you think in.
Grade calculator
Working on a 7a? Track every try until it goes. Climbing abroad and the grades don't match home? Log it in RoxClimbs in the grade on the topo.
Your pyramid, in any grade system
Log a 7a in Spain and a VIII in Germany. RoxClimbs puts them on the same pyramid, in the system you choose.
Sport and trad route grades
| French | YDS (USA) | UIAA |
|---|---|---|
| 4 | 5.5 | IV |
| 4+ | 5.6 | IV+/V |
| 5a | 5.7 | V+ |
| 5b | 5.8 | VI- |
| 5c | 5.9 | VI |
| 6a | 5.10a | VI+ |
| 6a+ | 5.10b | VII- |
| 6b | 5.10c | VII |
| 6b+ | 5.10d | VII+ |
| 6c | 5.11a/5.11b | VII+/VIII- |
| 6c+ | 5.11c | VIII- |
| 7a | 5.11d | VIII |
| 7a+ | 5.12a | VIII+ |
| 7b | 5.12b | IX- |
| 7b+ | 5.12c | IX |
| 7c | 5.12d | IX+ |
| 7c+ | 5.13a | X- |
| 8a | 5.13b | X |
| 8a+ | 5.13c | X+ |
| 8b | 5.13d | X+/XI- |
| 8b+ | 5.14a | X+/XI- |
| 8c | 5.14b | XI- |
| 8c+ | 5.14c | XI-/XI |
| 9a | 5.14d | XI |
Bouldering grades
| Font | V-scale |
|---|---|
| 4 | VB |
| 5 | V1 |
| 5+ | V2 |
| 6A | V3 |
| 6A+ | V3 |
| 6B | V4 |
| 6B+ | V4 |
| 6C | V5 |
| 6C+ | V5 |
| 7A | V6 |
| 7A+ | V7 |
| 7B | V8 |
| 7B+ | V8 |
| 7C | V9 |
| 7C+ | V10 |
| 8A | V11 |
| 8A+ | V12 |
| 8B | V13 |
| 8B+ | V14 |
| 8C | V15 |
Common questions
What is 7a in YDS?
French 7a is 5.11d in YDS and VIII in UIAA on this chart.
What is V5 in Font?
V5 is Font 6C to 6C+ on this chart.
Why do conversion charts disagree?
Grades are local agreements, set by the climbers at each crag and in each country. Every chart lines them up a little differently, so treat any conversion as approximate.
Can I log in one system and see another?
Yes. Log each climb in the grade on the topo, and RoxClimbs shows your whole logbook in the system you choose in Settings. The grade you logged is kept.
Log your climbs, see where you really are
Logbook, pyramid and projects, in any grade system. Syncs with theCrag.
Start your logbook