Fabric Cover Factor & Tightness Calculator
Textile structural mechanics: Evaluate Peirce warp cover factor ($K_1$), weft cover factor ($K_2$), total combined fabric cover, and structural tightness rating.
Fabric Construction
Warp threads per inch
Weft threads per inch
English Cotton count
English Cotton count
Affects theoretical maximum packing tightness
Peirce Cover Factor Interpretation
- Open / Sheer (< 16): Voile, gauze, cheesecloth. Highly permeable.
- Medium Apparel (16–22): Shirting, poplin, blouses, summer dresses.
- Dense / Tight (22–27): Chinos, gabardine, rainwear, bed sheets.
- Maximum Jammed (> 27): Heavy duck canvas, ballistic cloth, waterproof tarps.
Peirce Cover Factor (English System)
Warp Cover Factor (K₁)
--
Weft Cover Factor (K₂)
--
Total Peirce Cover Factor (K_c)
--
Fractional Area & Tightness
Fabric Area Covered
--
Percentage yarn coverage
Fabric Open Porosity
--
Open space between yarns
Metric Equivalent & Classification
Metric Cover Factor (k₁ / k₂ / k_tot):
--
Weavability Tightness Factor:
--
Classification:
--
Recommended Tools & Equipment
Tested hardware and components for high reliability
100% Free Tool
Zero Sign-Up