Climbing Rope Diameter Chart
Climbing Nest · climbingnest.com · reviewed September 13, 2026
| Single 9.5-10.2 mm | durable workhorse for gym, top-rope, projecting |
|---|---|
| Single 9.0-9.4 mm | all-round sport climbing |
| Single 8.5-8.9 mm | light redpoint ropes, check belay device range |
| Half ropes 8.0-9.0 mm | clipped alternately on wandering trad routes |
| Twin ropes 7.0-8.0 mm | both strands clipped together |
| Static 9-11 mm | rappelling and hauling, never lead climbing |
| Tag symbols | 1 = single, 1/2 = half, ∞ = twin |
Typical values for general guidance. Always check the manufacturer's specification for your exact product.
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