Convert climbing grades between French, Yosemite, UIAA and V-scale systems.
Grades are ordinal, so conversion means aligning positions on parallel scales rather than calculating. The V-scale measures bouldering difficulty and maps only loosely onto roped grades, which is why several indices share a V grade. Conversion tables disagree at the margins because sport and bouldering scales weight sustained difficulty and single hard moves differently.
Climbing Grade
Grade systems are ordinal scales aligned by index rather than converted arithmetically
These figures are population-average estimates for training and recreational planning only and are not medical advice. Individual responses vary widely. Consult a qualified health professional before starting or significantly changing an exercise, supplement or nutrition programme, particularly if you have any medical condition.
Grade systems are ordinal scales aligned by index rather than converted arithmetically Grades are ordinal, so conversion means aligning positions on parallel scales rather than calculating. The V-scale measures bouldering difficulty and maps only loosely onto roped grades, which is why several indices share a V grade.
Conversion tables disagree at the margins because sport and bouldering scales weight sustained difficulty and single hard moves differently.
This calculator takes 2 inputs: Grade index on the shared scale, System to display. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.