Grams per square meter (gsm) is a standard unit of measurement used to determine the weight of paper and other materials like fabric. It represents the mass of a material per unit area. For instance, a sheet of paper measuring one square meter that weighs 80 grams has a gsm of 80. This metric provides a quantifiable way to assess a material’s thickness and density, which directly impacts its properties and suitability for various applications.
Understanding this measurement is fundamental in numerous industries. Historically, consistent material weight was challenging to achieve and vital for printing and manufacturing processes. This metric allows for standardized comparisons across different products and suppliers, facilitating informed purchasing decisions. The ability to quantify this property ensures product consistency, optimizes printing and manufacturing efficiency, and helps predict material performance. For example, higher values often indicate greater durability and opacity in paper, while in textiles, it can relate to the fabric’s drape and warmth.