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Fabric weight is measured in grams per square metre or g/m 2 (also abbreviated as GSM). GSM is the metric measurement of the weight of a fabric—it is a critical parameter for any textile product. The weight may affect density, thickness and many physical properties of the fabric, such as strength.
Fabric "weight" is often specified as mass per unit area, grams per square meter (gsm) or ounces per square yard. It is also sometimes specified in ounces per yard in a standard width for the particular cloth. One gram per square meter equals 0.0295 ounces per square yard; one ounce per square yard equals 33.9 grams per square meter.
Conversions between units in the metric system are defined by their prefixes (for example, 1 kilogram = 1000 grams, 1 milligram = 0.001 grams) and are thus not listed in this article. Exceptions are made if the unit is commonly known by another name (for example, 1 micron = 10 −6 metre).
{{convert|1.2|km2|acre sqyd ha}} → 1.2 square kilometres (300 acres; 1,400,000 sq yd; 120 ha) {{convert|1.2|km2|acre+sqyd+ha}} → 1.2 square kilometres (300 acres; 1,400,000 sq yd; 120 ha) In the following, because "board feet" contains a space, using a space to make a combination fails. {{convert|123|cuyd|m3 board feet}} → 123 cubic yards ...
In the metric system, the mass per unit area of all types of paper and paperboard is expressed in terms of grams per square metre (g/m 2). This quantity is commonly called grammage in both English and French , [ 2 ] though printers in most English-speaking countries still refer to the " weight " of paper.
Table of area (square) units Unit Plural Relative value Metric value Imperial value Notes pulzier kwadru: pulzieri kwadri 1 ⁄ 144 ~4.765 cm 2 ~0.7385 sq in fitel kwadru: iftla kwadri 1 ⁄ 4 ~171.5 cm 2 ~26.59 sq in xiber kwadru: xbar kwadri 1 ~686.1 cm 2 ~106.3 sq in qasba kwadra: qasab kwadri, or qasbiet kwadri 64 ~4.391 m 2 ~5.252 sq yd an ...
Ounces are also used to express the "weight", or more accurately the areal density, of a textile fabric in North America, Asia, or the UK, as in "16 oz denim". The number refers to the weight in ounces of a given amount of fabric, either a yard of a given width, or a square yard, where the depth of the fabric is a fabric-specific constant. [18]
British media also frequently uses the football pitch for equivalent purposes, although soccer pitches are not of a fixed size, but instead can vary within defined limits (100–130 yd or 91.4–118.9 m long, and 50–100 yd or 45.7–91.4 m wide, giving an area of 5,000 to 13,000 sq yd or 4,181 to 10,870 m 2).