Convert climbing grades between the major grading systems.
Climbing grades are ordinal rather than numeric, so conversion means aligning positions on parallel scales. The gaps between consecutive grades are also not equal, growing wider at the top of each scale. Grade conversion tables disagree at the margins because the systems 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 estimates based on population-average formulas and are intended for training and recreational planning only. They are not medical advice. Consult a qualified health professional before starting or changing an exercise programme, particularly if you have an existing medical condition.
Grade systems are ordinal scales aligned by index rather than converted arithmetically Climbing grades are ordinal rather than numeric, so conversion means aligning positions on parallel scales. The gaps between consecutive grades are also not equal, growing wider at the top of each scale.
Grade conversion tables disagree at the margins because the systems weight sustained difficulty and single hard moves differently.
This calculator takes 2 inputs: Grade index on a common scale, Grade system to describe. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.