// multi-utility computation suite · offline · instant · precise
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eng.spinning-twist-per-meter Calculator
Calculates textile yarn twist per metre (or inch) from yarn count, fibre properties, and twist multiplier for optimum strength. Twist multiplier determines the strength-elongation balance — under-twisted yarn has low strength; over-twisted yarn becomes harsh and brittle.
Inputs
Tm Twist Multiplier
Reference formula or conversion factor shown for context.
Count Tex
Reference formula or conversion factor shown for context.
Spindle Speed Rpm
Rate of movement. 1 m/s = 3.6 km/h = 2.237 mph.
Results
twist per metre TPM
Reference formula or conversion factor shown for context.
twist per inch TPI
Sample size or count used in the calculation.
delivery speed (m/min)
The computed rate of movement or processing.
TPM = TM × √(1000/tex) × 10
Reference formula or conversion factor shown for context.
typical TM values
The computed numeric or monetary value.
twist direction
The computed direction or bearing, typically in degrees from north or as a cardinal direction.