Fall factor = fall length / rope paid out. Maximum possible fall factor = 2 (falling above last piece with no rope run out). Higher fall factor = more force on the system. A 6m fall on 3m of rope = fall factor 2.

What is the maximum arrest force for a single rope?

UIAA and EN892 require max arrest force below 12kN for single ropes and below 8kN for half ropes. Lower arrest force ropes are softer catching (more elongation) but require higher-rated anchors.

Climbing Rope Dynamic Elongation Fall Factor Calculator

Calculate peak arrest force from rope dynamic elongation. UIAA limit: 12kN max arrest force for single rope. Fall factor = fall distance divided by rope paid out; maximum fall factor = 2.

Use the full interactive calculator below, or

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Frequently Asked Questions

What is fall factor?

What is the maximum arrest force for a single rope?