Textile testing starts with textile fibers and goes all the way through to the final product. The fiber test includes the length, strength, elongation, fineness, and maturity. The yarn test includes linear density, single yarn strength, yarn evenness, and yarn hairiness. The fabric test includes aerial density, weave type, and air permeability.

Textile Testing is one of the most important steps of fabric construction as it helps identify the quality of the textile as well as what it is best used for. Testing of textiles refers to numerous procedures for assessing myriad fiber, yarn and fabric characteristics such as fiber strength and fineness, yarn count and twist and fabric weight, thickness, strength, abrasion resistance, color fastness, wrinkle resistance and stiffness. It is the application of engineering knowledge and science to the measurement of the properties and characteristics of, and the conditions affecting, textile materials. It involves the use of techniques, tools, instruments and machines in the laboratory for the evaluation of the properties of the textiles. Textile testing has become more important in recent years as a result of the new demands placed upon the products of textile manufacturers.