Fabric GSM Calculator
Fabric weight is the mass of warp plus weft in one square metre: 100 ends and 60 picks per inch of 30s cotton with 8 % and 5 % crimp weigh 132.523 g/m².
132.523035844683 g/m²
Full answer, then cut to fewer decimals (not rounded):
- 132.523035844683 g/m²
- 132.52303584468 g/m²
- 132.5230358446 g/m²
- 132.523035844 g/m²
- 132.52303584 g/m²
- 132.5230358 g/m²
- 132.523035 g/m²
- 132.52303 g/m²
- 132.5230 g/m²
- 132.523 g/m²
- 132.52 g/m²
- 132.5 g/m²
- Warp contribution
- 83.6988 g/m²
- Weft contribution
- 48.8243 g/m²
- Fabric weight
- 3.90857 oz/yd²
- Warp linear density
- 19.6847 tex
- Weft linear density
- 19.6847 tex
Step-by-step solution
- GSM = [EPI × (1 + warp crimp) × warp tex + PPI × (1 + weft crimp) × weft tex] × 39.37 ÷ 1000
- Warp: 100 × 39.37 × 1.08 × 19.6847 ÷ 1000 = 83.6988 g/m²
- Weft: 60 × 39.37 × 1.05 × 19.6847 ÷ 1000 = 48.8243 g/m²
Fabric GSM Formula
GSM = [EPI(1 + c₁)tex₁ + PPI(1 + c₂)tex₂] × 39.37 ÷ 1000
c crimp, tex = 590.5/Ne
Worked Example
A 100 × 60 fabric in 30s × 30s cotton with 8 % warp and 5 % weft crimp:
- GSM = [EPI × (1 + warp crimp) × warp tex + PPI × (1 + weft crimp) × weft tex] × 39.37 ÷ 1000
- Warp: 100 × 39.37 × 1.08 × 19.6847 ÷ 1000 = 83.6988 g/m²
- Weft: 60 × 39.37 × 1.05 × 19.6847 ÷ 1000 = 48.8243 g/m²
Weft contribution: 48.8243 g/m² · Fabric weight: 3.90857 oz/yd² · Warp linear density: 19.6847 tex · Weft linear density: 19.6847 tex
More Fabric Manufacture and Structure Calculators
-
Cover Factor Calculator
Kc = K₁ + K₂ − K₁K₂/28
K = n√tex/10, n threads per cm; English K = EPI/√Ne; 28 is full cover
Example: A 100 × 60 fabric in 30s × 30s yarn: Cloth cover factor Kc = 21.41.
-
Crimp Calculator
c = (ly − lf) ÷ lf
Peirce: l = p(1 + c), h ≈ (4/3)p√c, θ ≈ 106√c degrees
Example: A yarn that measures 21.6 cm straightened from a 20 cm strip of fabric: Crimp = 8 %.
-
Knitted Fabric Calculator
cpc = kc/ℓ, wpc = kw/ℓ, S = cpc × wpc
ℓ loop length (cm); TF = √tex/ℓ (mm); GSM = S ℓ tex/10
Example: Plain jersey knitted from 30s yarn with a 3 mm loop length (dry relaxed): Fabric weight = 124.67 g/m².
Frequently asked questions
Why include crimp in GSM?
Yarn in fabric is longer than the fabric because it waves over and under; crimp adds that extra yarn length (and weight).
How do I measure GSM directly?
Cut a 100 cm² circle with a GSM cutter, weigh it in grams and multiply by 100 (ASTM D3776, ISO 3801).
Sources
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Fabric GSM Calculator. Retrieved October 25, 2026, from https://scientificconverters.com/calculators/fabric-gsm-calculator/
IEEE
Scientific Converters, "Fabric GSM Calculator," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/calculators/fabric-gsm-calculator/