Fabric Shrinkage
Compute a fabric's shrinkage after washing, S = (initial measure − final measure)/initial measure · 100%, the percentage reduction in length or width. Almost every fabric shrinks in the first wash (cotton can exceed 5%), so the pattern must compensate for that percentage and the fabric is usually pre-shrunk (sanforized). Ignoring it makes the garment come out smaller than the nominal size. Enter the measures before and after washing.
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Encolhimento de tecido
Quase todo tecido encolhe na primeira lavagem — especialmente os de fibras naturais como algodão e linho. A razão: durante a fiação e a tecelagem, os fios ficam sob tensão e esticados; o calor e a água da lavagem relaxam essas tensões e as fibras voltam ao estado natural, encurtando o tecido. O encolhimento E = (inicial − final)/inicial·100% pode passar de 5% no algodão. A confecção lida com isso de duas formas: pré-encolhendo o tecido na fábrica (processo sanforizado, que limita o encolhimento residual a ~1%) ou compensando no molde, cortando a peça maior na proporção do encolhimento esperado. Ignorar isso faz a camiseta 'P' virar infantil depois da primeira lavada. Informe as medidas antes e depois da lavagem.
Related Tools
Fabric Cover Factor
Compute a fabric's cover factor, CF = thread density (threads/cm) · √(Tex), an index of how 'closed' the weave is — how much the threads cover the area, leaving more or fewer open spaces. High factors indicate dense, opaque fabrics (canvas, twill); low ones, sheer, breathable fabrics (voile, mesh). It influences air permeability, opacity and strength. Enter the thread density and the count in Tex.
Fabric Weight (GSM)
Compute a fabric's weight in grams per square meter (GSM) by dividing a sample's mass by its area. It is the main measure of fabric 'weight': light T-shirt knits are 140–180 g/m², sweatshirts 280–340, canvas and denim much more. GSM defines hand, drape, durability and price, and is specified in almost every textile spec sheet. Enter the sample's mass and area.
Fabric Thread Count
Compute a woven fabric's thread density by adding the warp threads (lengthwise) and weft threads (widthwise) per centimeter. It is an indicator of construction and quality: higher density usually means a firmer, more durable and fuller fabric. It appears on spec sheets as 'threads/cm' or 'thread count'. Enter the warp and weft threads per cm.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.