Tools
Yarn Count Calculator
Enter the yarn length and weight to calculate count values, or enter any count value to convert between numbering systems.
Section 1
Calculate from Length & Weight
Enter yarn length (cm) and weight (g) to calculate all count values.
Section 2
Convert Between Systems
Enter a value in any field and click Calculate to convert to all other systems.
Reference
Numbering Systems
Definitions and formulas for each yarn count system.
Metric system. Length (m) per gram of yarn. Indirect system using SI units. Nm = L/G = km/kg = m/g
English Linen. Hanks per pound. Indirect system. 1 hank = 300 yards = 274.2m. NeL = Hanks / Pound
Weight (g) per 1,000m of yarn. Direct system using SI units. Tex = Weight × 1000 / Length
English Cotton. Hanks per pound. Indirect system. 1 hank = 840 yards = 768m. Ne = Hanks / Pound
English Worsted. Hanks per pound. Indirect system. 1 hank = 560 yards = 512m. NeK = Hanks / Pound
Weight (g) per 10,000m of yarn. Direct system using SI units. Dtex = Weight × 10,000 / Length
French system. Length (m) per 0.5g of yarn. Indirect system using SI units. Nf = L / G
English Straighan. Hanks per pound. Indirect system. 1 hank = 256 yards = 234m. NeW = Hanks / Pound
Weight (g) per 9,000m of yarn. Direct system using SI units. Denier = Weight × 9,000 / Length
Weight (oz) per yard of yarn. Direct system used in the woollen industry. 1 Dewsbury = 1 oz per yard. Dewsbury = Weight × 14,400 / Length (yards)
Weight (lb) per 14,400 yards of yarn. Direct system used in the jute industry. Higher values indicate coarser yarn. Jute = Weight (lb) × 14,400 / Length (yards)