Yarn Count Conversion

(1) Yarn Count Definitions

Metric Count (Nm):
Nm = m / 1-g
Denier Count (den):
Den = g / 9000-m
English Cotton Count (NeB):
NeB = 840-yd / 1-lb or NeB = 768.1-m / 453.59-g
Tex Count (tex):
Tex = g / 1000-m

(2) Yarn Count Conversion Factors

From metric count (Nm) to others:
Tex = 1000 / Nm
NeB = 0.59 x Nm
Den = 9000 / Nm
From denier (den) to others:
Nm = 9000 / den
NeB = 5315 / den
Tex = 0.111 x den
From English cotton count (NeB) to others:
Nm = 1.693 x NeB
Tex = 590 / NeB
Den = 5314 / NeB
From tex count (tex) to others:
Nm = 1000 / tex
NeB = 590 / tex
Den = 9 x tex

(3) Conversion Examples

[ Ex. 1: NeB 30 = 5315/30 den = 177 den ]
[ Ex. 2: 150 den = NeB 5315 / 150 = NeB 35 ]
[ Ex. 3: NeB 20 = Nm 1.693 x 20 = Nm 34 ]