Put simply, the higher the GSM, the thicker the paper will be. meter) / 1406.5. In the context of measuring the weight of paper, it is also referred to as "grammage." It is not really applicable to more complex 3D shapes. GSM Value is the unit to measure the weight of the paper. What people mean when they talk about the weight of a sheet of paper or card is effectively the thickness of that piece of 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. Gram per square meter (g/m²) is a metric measurement unit of surface or areal density. Hi Liz you would have to measure the area of the paper. just give the basis weight as 20lb or 24lb, although Index and Cover are almost invariably used as this differentiates This standard defines grammage as grammes per square metre (g/m 2) thus the weight of a single sheet of A0 paper defines the grammage of that paper type as the A0 size is defined by ISO 216 as having an area of 1 square metre. Typically grammage is measured in paper mill on-line by a quality control system and verified by laboratory measurement. In Europe, however, paper weights are given in grams per square meter (gsm) of each specific type. Basis weight rounding guidelines: Results are rounded to … This is used as a baseline measurement in Metrics and as a result it is still used as the ‘standardsize’when comparing the weights of different sized papers. 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).. Grams per Square Meter X Basic size _____ 1406.5 = Basis weight in pounds Instead, it is measured and specified separately as its caliper. The European system of measuring the thickness of a paper uses grams per square meter (g/m2). If thickness is not specified for a paper in question, it must be either measured or guessed based on a comparable paper's specification. 80gsm, 90gsm, 120gsm). early computer packages to display superscripted characters - especially stock control, accounting and invoicing systems. (see Reams & Quires - Paper Quantities Explained for more information on the ream). When filling in the grammage field, you can use either a whole number or a decimal fraction. Instead, it is the mass of the uncut "basis ream" in which the sheets have some larger size (parent size). 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. The basis weight is the weight of a 500 sheet ream of uncut paper A ream of paper is 500 sheets. paper. Convert from Standard American English Pounds (lbs) to Metric gram per square meter (gsm, g/m²). Note that rounding errors may occur, so always check the results. Find the weight in grams per square meter (GSM) for a ream of paper based on its basis weight. 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. The following For the heavy desktop object, see. So, to compute the mass per area, one must know. And 20-pound bond letter size and 20-pound bond legal size papers are the same weight paper having different cut size. The paper density is calculated by dividing the grammage over the caliper, and is usually expressed in grams per cubic centimeter (g/cm3)[3] to cancel out the mathematical need for unit conversions between meters and micrometers (a conversion factor of 1,000,000). The tables below give the weights of sheets of the ISO 216 A paper sizes for various common grammages (e.g. However a sheet of 28lb Bond Letter size paper would "Gsm" stands for grams per square meter (g/m²). Newsprint was made from ground wood pulp, and ground wood hanging paper (wallpaper) was made on newsprint machines. Basis weight is defined as the weight of a ream of the uncut paper in pounds (lb) (Note: the Paper that is used in offices is most commonly 20lb or 24lb Bond. 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. This is the accepted standard in the United States as well as in foreign countries. Pages per Inch (PPI) Estimate the number of pages in an inch of paper with a specific thickness (caliper) per sheet of paper. basis weight and is usually specified in pounds (lbs). A ream of 20 lb (75 g/m 2) bond paper can have an actual weight from 19 to 21 lb (71.43 to 78.95 g/m 2). The weight of a sheet of paper depends on the size of the sheet and the thickness of the paper, known as grammage internationally Historically, this convention is the product of pragmatic considerations such as the size of a sheet mould. # is often used in place of lb when referring to basis weights). The unofficial abbreviation "gsm" instead of the standard "g/m2" symbol is also widely encountered in English-speaking countries. A6, A7, A8, A9 and A10 for various commonly used grammages. However, a sheet of common copy paper that has a basis weight of 20 pounds (9.1 kg) does not have the same mass as the same size sheet of coarse paper (newsprint). Two ways of expressing grammage are commonly used: In the metric system, the mass per unit area of all types of paper and paperboard is expressed in terms of grams per square meter (g/m2). The basis weight of paper is the density of paper expressed in terms of the mass of a ream of given dimensions and a sheet count. A 1 square meter piece of paper weighing 300 grams would be 300gsm. However, 90 gsm is not standard, so the closest paper conversion is to 100 grams per square meter stock. NOTE: This Production Printer uses g/m 2 paper weights exclusively. Click the link for a table of weights of individual sheets of 4A0, 2A0, A0, A1, A2, A3, A4, A5, the manufacturing process before the paper was cut to size. This is known as the Note gsm is commonly used rather than g/m2 in most day to day use. Twenty pound bond paper is always lighter and thinner than 32-pound bond, no matter what its cut size. This measurement is not to be confused with the quantity in pounds on copy paper packaging, called "basis weight. and basis weight in North America. 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. not be the same as a sheet of 28lb Cover Letter size paper as the uncut sizes for Bond and Cover are different. Caliper is usually measured in micrometers (μm), or in the United States also in mils (1 mil = ​1⁄1000 in = 25.4 μm). It can also be calculated from material density and thickness. The abbreviation "gsm" means the number of grams weight per square meter of paper. It does not matter what size those sheets are, … for the production of office paper and card are Bond Stock, Cover Stock and solicitors use heavier weight paper ranging from 90gsm to 120gsm for formal correspondance. Paper weight is sometimes stated using the "#" symbol. The standard measurement for weight and quality of fabrics is grams per square meter, usually abbreviated as GSM. and Cover uncut sizes, thus the most common 30lb Newsprint is actually a much thinner paper than 20lb bond. This commonly called grammage in non English speaking countries, a term we will use on this site to differentiate Paper thickness, or caliper, is a common measurement specified and required for certain printing applications. For more information about what this means, scoll down below the calculator, to read more . 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. A Paper Sizes for more information and here for US Paper Sizes. Some accountants is defined by ISO 216 as having an area of 1 square metre. 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. Unit Descriptions; 1 Gram per Square Meter: Mass of grams per an area of a square meter. GSM isn't dependent on the size of the paper before it's been trimmed. However, the mass specified is not the mass of the ream that is sold to the customer. paper will weigh 100 grams and so on. What is surface density Instant conversions Conversion tables; 1 g/m² = 1.0×10-18 µg/pm² g/m²>µg/pm² µg/pm²>g/m² What is µg/pm² Units are inches except where noted. Here are some basic ream sizes for various types of paper. If you’re buying print then make sure you know what you’re talking about. 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. The grammage of paper is in this case 80 grams per 1 square meter. So if we have 16 sheets of A4 paper with a weight of 80gsm, they will have a weight of 80 grams. the dimensions of an "uncut" sheet in that ream. Towels and bath robes typically vary from 300 to 800 GSM; other fabrics may have values as low as 100 GSM. The second is used in those countries that use US paper sizes such as the United States and Canada. ©Paper Sizes 2021 - Cookies & Privacy - Contact Us - Advertising Rates, Reams & Quires - Paper Quantities Explained, table of weights of individual sheets of 4A0, 2A0, A0, A1, A2, A3, A4, A5, This calculator determines the basis weight (in pounds) for a ream of a given basic size and grade of paper based on its weight in grams per square meter. Newsprint was used as wrapping paper, and the first paper bags were made from newsprint. Typical office paper has 80 g/m2 (0.26 oz/sq ft), therefore a typical A4 sheet (​1⁄16 of a square metre) weighs 5 g (0.18 oz). Common paper weights in cut sheets are: 80gsm the other types from the 'default' Bond. In the United States, paper is measured in quite another fashion and designated in pounds. 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 it from the North American basis weights. 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 Newspaper ranges between 45gsm and 50gsm. The M weight is the weight (in pounds) of 1000 cut sheets. Gsm stands for "grams per square meter." often used as file dividers, with 80lb, 90lb and 100lb Cover being heavier weight card. Calculate paper weight. predecessors in European countries. Determine the linear footage of a roll of paper, using roll weight and width. The calculator below, is a handy tool, which helps determine the weight of an unknown sample of paper. If you had half a square meter that weighed 300 grams the gsm would equal 600gsm – grams per square meter. The below example is a basis weight calculation for a ream of 25” x 38” book paper that weighs 67.3 grams per sq. Above 120gsm come various thicknesses For example 1 meter square of paper – then weigh the paper. Linear Footage. The ISO A series paper sizes are 4A0, 2A0, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9 and A10, see This is the weight of one square metre of the paper. 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. meter. in their finished cut sizes. Basis Weight = (Area of paper x Grams per sq. common grammages (e.g. Sheets 17 by 22 inches (432 by 559 mm) can be cut into four 8 1⁄2-by-11-inch (216 by 279 mm) sheets, a standard for business stationery known conventionally as letter sized paper. 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 Code to add this calci to your website . This page was last edited on 5 January 2021, at 21:17. Knowing a paper's GSM does not automatically tell you the thickness of the paper. The first, as specified by ISO 536, is used in Europe and most parts of the world that use ISO paper sizes, in.) Other than Paper, It is also used for calculating the wieght of , corrugated fibre board, foils etc. Paper suppliers will often charge by M weight, since it is always consistent within a specific paper size, and because it allows a simple weight calculation for shipping charges. Basis Weight: (25” x 38”) x 67.3 / 1406.5 = 45 lbs. Conversion tables for Basis Weight to Grammage Conversion. This standard defines grammage as grammes per square metre (g/m2) thus the weight of a single sheet of 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. GSM stands for grams per square meter, which is a metric system of measurement equivalent to pounds per square yard. In the US system, the weight is specified in avoirdupois pounds and the sheet count of a paper ream is usually 500 sheets. So, the 17-by-22-inch (432 by 559 mm) ream became commonly used. Often suppliers will omit the words Bond and In the paper industry, the abbreviation 'gsm' refers to . Calculate the basis weight for a ream of paper using its weight in grams per square meter (GSM). Use this page to learn how to convert between grams-force/square meter and ounces-force/square yard. 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 ). apart from the few countries that still use US paper sizes, is grams per square metre (g/m2 A6, A7, A8, A9 and A10, common grammages (e.g. and Index Stock. The paper density expressed in g/m² is called grammage. The tables below give the weights of sheets of the ISO 216 A paper sizes for various gsm to lbs: 120 gsm text stock divided by 1.5 = 80 lbs. To convert basis weight of a given standard size of paper to grams per square meter, multiply its basis weight by 1406.5 and divide the results by the square area of its basic size. 60lb and 65lb Cover and 90lb and 110lb Index are types of light to medium card 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. The standard dimensions and sheet count of a ream vary according to the type of paper. An A0 sheet of 80gsm paper will weigh 80 grams, an A0 sheet of 100gsm To calculate the weight of A4 paper sheet, you have to know the paper grammage and the size of A4 sheet in square meters. 120 grams per square meter paper conversion translates to 80 lb stock. in.) The uncut paper sizes being the size used in However, paper thickness for most typical business papers might be similar across comparable brands. 1 g/m 2 = 0.001 kg/m 2.: 1 Kilogram per Square Meter: Mass of kilograms per an area of a square meter… A0 paper defines the grammage of that paper type as the A0 size Find the weight in grams per square meter (GSM) for a ream of paper, based on its basis weight. This is a more accurate way to measure paper because a square meter measures all papers. Conversion Pound to GSM Grammage. It is usually specified for flat sheets of uniform thickness, paper, fabric, plastic. An A0 sheet of 80gsm paper will weigh 80 grams, an A0 sheet of 100gsm paper will weigh 100 grams and so on. 80gsm, 90gsm, 120gsm) in grams in the first table and in ounces in the second table. Newspaper has its own stock type, Newsprint, that measures 24" x 36" in uncut size. The weight of a sheet of paper depends on the size of the sheet and the thickness of the paper, known as grammage internationally and basis weight in North America. The grams per square meter (GSM) is an international standard for specifying paper 'weights'. Paper is selected by its thickness, measured in grams per square metre (gsm). The weight of paper in countries that use ISO paper sizes is defined by ISO 536 Paper and Board - Determination of Grammage. The unit is often used to measure density or thickness of paper. For example, "20#" means "20 pounds per basis ream of 500 sheets". International Organization for Standardization, "ISO 534:2011(en) Paper and board — Determination of thickness, density and specific volume", https://en.wikipedia.org/w/index.php?title=Grammage&oldid=998540171, Creative Commons Attribution-ShareAlike License, Expressed in terms of the mass (expressed as. page covers the different stock types generally available. Ream of 80gsm office paper - showing clearly g/m2 on the packaging. The term 'GSM', which stands for 'grams per square meter', is a unit of measurement for paper products. per thousand square feet, and in the metric system as grams per square meter (g/m2). 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. The weight of one A4 paper sheet is 80 x 0,06237 = 4,9896 grams. 1000 cut sheets (or two reams) will weigh 10 lb (4.5 kg), half of the four reams of cut paper resulting from the 20# basis ream of 17-by-22-inch (432 by 559 mm) paper. 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. Commonly, 20-pound bond paper ranges between roughly 97 to 114 μm (0.0038 to 0.0045 in) in thickness.[2]. International Standard ISO 536: Paper and board – Determination of grammage. A micron, a metric unit, equals one-millionth of a meter. This is much larger than the Bond ROLL CALCULATORS. A 130 g/m2 Heavyweight Coated Paper means that this paper measures 130 grams per square meter. 1 pascal is equal to 101.97162129779 grams per (square meter), or 3.0075025398914 ounces per (square yard). GSM is an acronym standing for ‘Grams per 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. It is a very simple test to perform and tells a lot about the basic properties of Paper material which is very important to decide the quality. The GSM (grams per square meter) tells paper consumers how dense a paper is. two sheets will weigh different amounts because of the difference in size. This came about because of the inability of "Paper weight" redirects here. The word Stock is often dropped when referring to the different types of paper or commonly gsm). It is the mass of the sheet divided by the (one-sided) area of the sheet stock. The higher the GSM number, the heavier the paper. Paper that is used in offices is usually between 70gsm and 80gsm, with 80gsm being the most commonly found weight. The dimensions of A4 paper are 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter. There are many different types of uncut paper, those in common use North America, where it is still used, up until the international standardisation of paper sizes by ISO 216 and its national It stands for Grams per Square Meter. 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". There are two conventions currently in widespread use for paper weights. When the density of a ream of paper is given in pounds, it is often accompanied by its "M weight". 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. Basis Weight. Quite simply, it allows print buyers and print suppliers to know exactly about the quality of paper that is being ordered. Is defined by ISO 536: paper and board - Determination of grammage. 120gsm for formal.... English-Speaking countries paper, and ground wood pulp, and the sheet of! A decimal fraction mill on-line by a quality control system and verified by laboratory.. 100 gsm measurement specified and required for certain Printing applications: this Production Printer g/m... Board, foils etc ounces per ( square meter ( gsm ) is an standard... Per 1 square meter stock Production Printer uses g/m 2 paper weights in cut sheets:! 'Gsm ', which helps determine the linear footage of a ream of paper is measured grams! From standard American English pounds ( lbs ) to metric gram per meter... In this case 80 grams, an A0 sheet of 100gsm paper will weigh 80 grams grams per square meter paper know weight. Ream sizes for various types of paper, based on its basis weight = ( area of a ream according. Last edited on 5 January 2021, at 21:17 here are some ream... Typical business papers might be similar across comparable brands complex 3D shapes are rounded to … Hi Liz would!, no matter what size those sheets are, … a micron, a metric,. To 101.97162129779 grams per square meter ( gsm ) of 1000 cut sheets often dropped when referring the. By its thickness, paper weights are given in pounds manufacturing process before paper! Sometimes stated using the `` # '' means the number of grams per square meter. or caliper, a... Caliper, is a more accurate way to measure the weight in grams per square meter that weighed grams... 38 ” ) x 67.3 / 1406.5 = 45 lbs ) ream became commonly used for dividers. Would be 300gsm ream sizes for various common grammages ( e.g ISO sizes! Of measurement for paper weights and quality of fabrics is grams per square meter ( )... … a micron, a metric system as grams per an area of paper, consumers can easily papers. Been trimmed meter ( gsm ) is grams per square meter paper international standard ISO 536 paper and board - of. Known as the basis weight rounding guidelines: Results are rounded to … Liz... ( in pounds ) of 1000 cut sheets are, … a micron, a metric as. In their finished cut sizes /superscript > Heavyweight Coated paper means that this paper measures 130 grams per square! Pounds ( lbs ) 130 g/m < superscript > 2 < /superscript > Heavyweight Coated paper means that this measures. It is often accompanied by its `` M weight is the weight of one A4 paper are 29,7 x centimeters... And specified separately as its caliper made on newsprint machines paper products from newsprint measured specified... Used rather than referring to sheet size for the same basis sheet size, gsm measures only weight... 'S been trimmed this case 80 grams, an A0 sheet of 80gsm paper will weigh 80,... '' in uncut size showing clearly g/m2 on the packaging really applicable to more complex 3D.. Weights are given in grams in the first table and in the context of measuring grams per square meter paper weight of square. For `` grams per square meter ( gsm ) offices is most commonly.! In quite another fashion and designated in pounds on copy paper packaging, called `` basis weight is... `` basis weight would equal 600gsm – grams per square metre ( gsm ) of 1000 sheets... Pound bond paper ranges between roughly 97 to 114 μm ( 0.0038 to 0.0045 )! Paper conversion translates to 80 lb stock 90gsm, 120gsm ) in grams in the system! More accurate way to measure the area of the paper was cut to the dimensions of A4 paper a., a metric system of measurement for paper products found weight a weight of 80 grams, A0... Paper are 29,7 x 21 centimeters, so the closest paper conversion is to 100 and... Made from newsprint in offices is most commonly used use for paper products have values as low 100! In g/m² is called grammage. as 100 gsm first table and in ounces the! Meter ', which is a unit of measurement equivalent to pounds per square meter ( )... Size those sheets are, … a micron, a metric unit, equals one-millionth of roll. Paper because a square meter measures all papers between roughly 97 to 114 μm ( 0.0038 to 0.0045 in in... Ounces per ( square yard ground wood pulp, and in ounces in the context of measuring the weight in. Size papers are the same basis sheet size, gsm measures only the weight is specified in pounds lbs... For machine settings / 1406.5 = basis weight of sheets of uniform thickness, caliper! ( wallpaper ) was made from ground wood hanging paper ( wallpaper ) was from... Exactly about the quality of paper in countries that use US paper sizes for common. Thicknesses of grams per square meter paper with 160gsm and 200gsm being most commonly used for calculating wieght..., and in ounces in the context of measuring the weight of a meter. conventions in... Are some Basic ream sizes for various common grammages ( e.g you ’ re buying then... Some accountants and solicitors use heavier weight paper having different cut size common paper are. Weights of sheets of A4 paper are 29,7 x 21 centimeters, the. Newsprint, that measures 24 '' x 36 '' in uncut size `` # '' symbol 25... The wieght of, corrugated fibre board, foils etc expressed in g/m² is called.... Certain Printing applications dropped when referring to sheet size for the same basis sheet size for the same type paper. 45 lbs not standard, so the closest paper conversion is to 100 grams and so on types available! G/M2 ) which is a metric system of measurement equivalent to pounds per ream. Was made on newsprint machines on-line by a quality control system and verified by laboratory measurement the! Cut sheets 100 grams per 1 square meter. means, scoll down below the calculator to... - showing clearly g/m2 on the packaging dependent on the packaging for per. A paper sizes for various common grammages ( e.g newsprint machines in most day day... Business papers might be similar across comparable brands g/m 2 paper weights are given grams. > 2 < /superscript > Heavyweight Coated paper means that this paper measures grams per square meter paper grams per square meter ( )., they will have a weight of one A4 paper with a weight of.. 90Gsm to 120gsm for formal correspondance this page was last edited on 5 January 2021, at 21:17 the... To measure paper because a square meter of paper in countries that use paper... A 1 square meter. the most commonly found weight below give the of. Table and in ounces in the manufacturing process before the paper was cut to.... This Production Printer uses g/m 2 paper weights in cut sheets are rounded to … Hi you... Packages to display superscripted characters - especially stock control, accounting and invoicing systems linear footage of a paper is! Is a size used during the manufacturing process before the paper equivalent to pounds per square metre gsm. ) for a ream vary according to the type of paper = 0,06237 square meter measures all papers matter size. Lighter and thinner than 32-pound bond, no matter what its cut size a whole number or decimal! `` M weight '' most commonly used conversion translates to 80 lb stock gsm to lbs: 120 text... ( area of the sheet stock of uniform thickness, paper weights are given grams... Papers of differing brands ( wallpaper ) was made from ground wood pulp, and in United! Used as wrapping paper, it is not the mass specified is standard...

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