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Stroke Length Reference — Line Speed Read
Stroke Length Reference
Line Speed Read · Physics-Based Coaching Tool
Stroke Length Calculator

Backswing length matched to putt distance and green speed. Select a Stimp to highlight your column. Toggle inches ↔ cm.
Calculated on Dswing tempo 90 BPM · Rhythm 2 - 2.2

Stimp
Units
Speed
Distance
Model: Backswing (inches) = √(distance_ft × 100.5 / Stimp). Calibrated against verified SAM PuttLab reference values — e.g. 10ft on Stimp 10 = 10.0" (25.5 cm). Cross referenced with Phil Kenyon Tempostik.