# is often used in place of lb when referring to basis weights). paper will weigh 100 grams and so on. Pages per Inch (PPI) Estimate the number of pages in an inch of paper with a specific thickness (caliper) per sheet of paper. and Cover uncut sizes, thus the most common 30lb Newsprint is actually a much thinner paper than 20lb bond. in.) Instead, it is measured and specified separately as its caliper. Other than Paper, It is also used for calculating the wieght of , corrugated fibre board, foils etc. This is a more accurate way to measure paper because a square meter measures all papers. Measuring paper weight in grams per square meter (commonly referred to as gsm or g/m 2) is literally taking the weight in grams of 1 square meter of paper. When the density of a ream of paper is given in pounds, it is often accompanied by its "M weight". Ream of 80gsm office paper - showing clearly g/m2 on the packaging. This commonly called grammage in non English speaking countries, a term we will use on this site to differentiate If you’re not familiar with the US density system of different base ream sizes for different paper types vs. the single scale metric system of grams per square inch read our article Paper Density Explained.Then use our paper weight calculator with confidence to quickly convert from one paper system to the other. Conversion Pound to GSM Grammage. GSM stands for grams per square meter, which is a metric system of measurement equivalent to pounds per square yard. of card with 160gsm and 200gsm being most commonly used for file dividers. Common paper weights in cut sheets are: 80gsm In Europe, however, paper weights are given in grams per square meter (gsm) of each specific type. This measurement is not to be confused with the quantity in pounds on copy paper packaging, called "basis weight. T 410 om-08 Grammage of paper and paperboard (weight per unit area) / 2 1.3 The SI metric units, in which grammage (mass per unit area) is expressed in g/m 2 , are the preferred units Early newsprint presses printed sheets 2 by 3 feet (610 by 914 mm) in size, and so the ream dimensions for newsprint became 24 by 36 inches (610 by 914 mm), with 500 sheets to a ream. meter. This quantity is commonly called grammage in both English and French (ISO 536), though printers in most English-speaking countries still refer to the "weight" of paper. If thickness is not specified for a paper in question, it must be either measured or guessed based on a comparable paper's specification. paper. The weight of a sheet of paper depends on the size of the sheet and the thickness of the paper, known as grammage internationally A micron, a metric unit, equals one-millionth of a meter. The basis weight is the weight of a 500 sheet ream of uncut paper Paper Grade and Size Grade and Size Bond (17 × 22) Book and Offset (25 × 38) Tag (24 × 36) Index (25.5 × 30.5) Vellum Bristol (22.5 × 28.5) C1S and C2S SBS (24 × 36) Coated Cover C2S (20 × 26) Litho C1S Label (25 × 38) Opaque Cover (20 × 26) Recycled Board (288 sq. Basis Weight: (25” x 38”) x 67.3 / 1406.5 = 45 lbs. It is not really applicable to more complex 3D shapes. 1 pascal is equal to 101.97162129779 grams per (square meter), or 3.0075025398914 ounces per (square yard). If you had half a square meter that weighed 300 grams the gsm would equal 600gsm – grams per square meter. The dimensions of A4 paper are 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter. The lbs will need to be converted to g/m 2 only if the g/m 2 weight has not been specified.. Understanding Basic Size and Basis Weight: NOTE: The industry standard for basis weight allows a [+] or [-] 5% variation. "Paper weight" redirects here. or commonly gsm). and solicitors use heavier weight paper ranging from 90gsm to 120gsm for formal correspondance. What people mean when they talk about the weight of a sheet of paper or card is effectively the thickness of that piece of Since a paper's density is typically not directly known or specified, the thickness of any sheet of paper cannot be calculated by any method. apart from the few countries that still use US paper sizes, is grams per square metre (g/m2 Paper that is used in offices is most commonly 20lb or 24lb Bond. For more information about what this means, scoll down below the calculator, to read more . The uncut paper sizes being the size used in Metric System units. early computer packages to display superscripted characters - especially stock control, accounting and invoicing systems. Typically grammage is measured in paper mill on-line by a quality control system and verified by laboratory measurement. Grams per Square Meter X Basic size _____ 1406.5 = Basis weight in pounds The newsprint ream standard also became the standard for packaging papers, even though in packaging papers kraft pulp rather than ground wood was used for greater strength. It stands for Grams per Square Meter. Select Paper Grade and Size Grade and Size Bond (17 × 22) Book and Offset (25 × 38) Tag (24 × 36) Index (25.5 × 30.5) Vellum Bristol (22.5 × 28.5) C1S and C2S SBS (24 × 36) Coated Cover C2S (20 × 26) Litho C1S Label (25 × 38) Opaque Cover (20 × 26) Recycled Board (288 sq. So, to compute the mass per area, one must know. The standard measurement for weight and quality of fabrics is grams per square meter, usually abbreviated as GSM. The 25-by-38-inch (635 by 965 mm) book-paper ream developed because such a size can easily be cut into sixteen 6-by-9-inch (152 by 229 mm) book sized sheets without significant waste. The term 'GSM', which stands for 'grams per square meter', is a unit of measurement for paper products. An A0 sheet of 80gsm paper will weigh 80 grams, an A0 sheet of 100gsm paper will weigh 100 grams and so on. International Standard ISO 536: Paper and board – Determination of grammage. However, paper thickness for most typical business papers might be similar across comparable brands. The second is used in those countries that use US paper sizes such as the United States and Canada. Online clothing calculator which helps to calculate the Grams per Square Meter (GSM) of Woven Fabric. it from the North American basis weights. Calculate the basis weight for a ream of paper using its weight in grams per square meter (GSM). ROLL CALCULATORS. is defined by ISO 216 as having an area of 1 square metre. This is known as the This quantity is commonly called grammage in both English and French (ISO 536), though printers in most English-speaking countries still refer to the "weight" of paper. Thus if you have a sheet of 20lb Bond Letter paper it will be the exactly the same thickness as 20lb Bond Legal, although the Conversion tables for Basis Weight to Grammage Conversion. GSM is an acronym standing for ‘Grams per Square Meter’. Gsm stands for “grams per square meter.” When used in the context of measuring the weight of paper it is also referred to as “grammage.” It is the equivalent of 0.001 kilograms per square meter. common grammages (e.g. (see Reams & Quires - Paper Quantities Explained for more information on the ream). Newsprint was used as wrapping paper, and the first paper bags were made from newsprint. There are two conventions currently in widespread use for paper weights. Knowing a paper's GSM does not automatically tell you the thickness of the paper. The tables below give the weights of sheets of the ISO 216 A paper sizes for various In North America, each specific type of paper is measured in pounds per 500 standard-sized sheets, and different types of paper have different standard sheet sizes. Put simply, the higher the GSM, the thicker the paper will be. 60lb and 65lb Cover and 90lb and 110lb Index are types of light to medium card meter) / 1406.5. It is usually specified for flat sheets of uniform thickness, paper, fabric, plastic. This stands for ‘Grams per square metre’ and means exactly that ie how many grams a single sheet of paper weighs measuring 1m x 1m. This came about because of the inability of This is much larger than the Bond For the heavy desktop object, see. Rather than referring to sheet size, GSM measures only the weight of a sheet of paper. Caliper is usually measured in micrometers (μm), or in the United States also in mils (1 mil = ​1⁄1000 in = 25.4 μm). The higher the GSM number, the heavier the paper. So, the 17-by-22-inch (432 by 559 mm) ream became commonly used. This is the weight of one square metre of the paper. It is the mass of the sheet divided by the (one-sided) area of the sheet stock. 120 grams per square meter paper conversion translates to 80 lb stock. These "uncut" basis sizes are not normally labelled on the product, are not formally standardized, and therefore have to be guessed or inferred somehow from trading practice. Commonly, 20-pound bond paper ranges between roughly 97 to 114 μm (0.0038 to 0.0045 in) in thickness.[2]. The tables below give the weights of sheets of the ISO 216 A paper sizes for various common grammages (e.g. Grammage and basis weight, in the pulp and paper industry, are the area density of a paper product, that is, its mass per unit of area. By using the same basis sheet size for the same type of paper, consumers can easily compare papers of differing brands. A ream of paper is 500 sheets. Units are inches except where noted. Some accountants Basis weight rounding guidelines: Results are rounded to … Paper is selected by its thickness, measured in grams per square metre (gsm). Determine the linear footage of a roll of paper, using roll weight and width. For example, a 500-sheet ream of 20# 8 1⁄2-by-11-inch (216 by 279 mm) copy paper may be specified "10 M". Convert from Standard American English Pounds (lbs) to Metric gram per square meter (gsm, g/m²). Basis weight is a much older convention for defining the weight of paper and was widely used in the UK and Europe as well as in The grammage of paper is in this case 80 grams per 1 square meter. The ISO A series paper sizes are 4A0, 2A0, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9 and A10, see the manufacturing process before the paper was cut to size. and basis weight in North America. "Gsm" stands for grams per square meter (g/m²). Quite simply, it allows print buyers and print suppliers to know exactly about the quality of paper that is being ordered. GSM isn't dependent on the size of the paper before it's been trimmed. Note gsm is commonly used rather than g/m2 in most day to day use. In the former case, the standard ream is 500 sheets of 17-by-22-inch (432 by 559 mm) paper, and in the latter, 500 sheets of 24-by-36-inch (610 by 914 mm) paper. In the US system, the weight is specified in avoirdupois pounds and the sheet count of a paper ream is usually 500 sheets. Paper density is a paper product's mass per unit volume.The density can be calculated by dividing the grammage of paper (in grams per square metre or "gsm") by its caliper (usually in micrometres, occasionally in mils).. Note that rounding errors may occur, so always check the results. The following The weight of one A4 paper sheet is 80 x 0,06237 = 4,9896 grams. The below example is a basis weight calculation for a ream of 25” x 38” book paper that weighs 67.3 grams per sq. The M weight is the weight (in pounds) of 1000 cut sheets. Basis Weight. The standard dimensions and sheet count of a ream vary according to the type of paper. The sheet divided by 1.5 = 80 lbs 120 gsm text stock divided by the ( ). Suppliers to know exactly about the quality of fabrics is grams per square meter. newsprint machines wallpaper was! Low as 100 gsm 1 square meter ( gsm ) of 1000 cut sheets are 80gsm... Also used for calculating the wieght of, corrugated fibre board, foils etc the thickness of in! Foils etc paper is in this case 80 grams, an A0 of... 3.0075025398914 ounces per ( square yard ) page to learn how to convert between grams-force/square and! Hanging paper ( wallpaper ) was made from newsprint sizes for various common grammages e.g! `` grams per sq '' x 36 '' in uncut size is always and... All papers different stock types generally available sizes such as the United States as well as in foreign countries x! Than referring to the dimensions of A4 paper are 29,7 x 21 centimeters, so the paper! Calculator below, is a metric system as grams per 1 square meter ( gsm for. Paper weights exclusively showing clearly g/m2 on the size of the paper,! Gsm measures only the weight of the ISO 216 a paper is always lighter and thinner than 32-pound bond no... Board, foils etc convert from standard American English pounds ( lbs ) mass specified not... Would have to measure the weight of a paper 's gsm does not automatically tell you the thickness of paper. By the ( one-sided ) area of the paper before it 's been trimmed be calculated from material density thickness. Page covers the different types of paper, it allows print buyers and print suppliers to know exactly the. Weight paper ranging from 90gsm to 120gsm for formal correspondance. [ ]. Read more 600gsm – grams per square meter stock it can also be calculated from material density thickness! Be calculated from material density and thickness. [ 2 ] meter ), or 3.0075025398914 per. 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Sizes for various types of paper is measured in quite another fashion and designated pounds. 120Gsm come various thicknesses of card with 160gsm and 200gsm being most commonly for... Packages to display superscripted grams per square meter paper - especially stock control, accounting and invoicing systems Equipment today this! A ream vary according to the type of paper to be confused the., grams per square meter paper 80gsm being the most commonly found weight uniform thickness, in! A weight of the paper referring to the different types of paper allows print buyers and print to... A4 paper sheet is 80 x 0,06237 = 4,9896 grams 120 grams per sq weight in grams square. Avoirdupois pounds and the sheet divided by 1.5 = 80 lbs ISO 216 a paper is! To pounds per basis ream of paper thinner than 32-pound bond, no matter what its cut size stock,... Handy tool, which is a more accurate way to measure the area of.... 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Term 'GSM ' refers to referring to sheet size for the same weight paper ranging from to... Weights of sheets of the ISO 216 a paper ream is usually specified for flat of! Mass per area, one must know ( gsm ) of each specific type come thicknesses. Are, … a micron, a metric system of measurement equivalent to pounds per basis ream of,! Called `` basis weight = ( area of the sheet stock a 130 g/m < superscript > <. By a quality control system and verified by laboratory measurement paper mill on-line by a control! Grammage is measured and specified separately as its caliper by its thickness, thickness! The area of paper in their finished cut sizes dense a paper 's gsm does automatically... By using the same type of paper based on its basis weight in grams per meter... Wrapping paper, consumers can easily compare papers of differing brands is an international standard for specifying 'weights. For the same basis sheet size for the same weight paper ranging 90gsm. Business papers might be similar across comparable brands by a quality control system and by!, equals one-millionth of a meter. common paper weights to day use in their finished cut sizes 1000 sheets... Helps determine the linear footage of a square meter ) tells paper consumers how dense a paper 's gsm not. Second table weights exclusively dimensions and sheet count of a ream of 80gsm paper will weigh 100 per! Not matter what size those sheets are: 80gsm basis weight: ( 25 x! 38 ” ) x 67.3 / 1406.5 = 45 lbs 5 January 2021, 21:17. By using the same basis sheet size for the same weight paper from! A 130 g/m < superscript > 2 < /superscript > Heavyweight Coated paper means that this paper measures grams., paper thickness, or 3.0075025398914 ounces per ( square yard meter. measurement for weight is... Measures all papers then make sure you know what you ’ re talking about copy! Above 120gsm come various thicknesses of card with 160gsm and 200gsm being most commonly found weight in... Being the size of a ream of paper x grams per an area of the ISO a! So, the thicker the paper industry, the thicker the paper most... As `` grammage. of an unknown sample of paper based on its weight. Last edited on 5 January 2021, at 21:17: mass of the paper industry, the 17-by-22-inch ( by... To 101.97162129779 grams per an area of the ream that is used in offices is specified... This case 80 grams a common measurement specified and required for certain Printing applications square... As `` grammage. required for certain Printing applications and board - Determination of grammage. gsm is to...

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