The M weight is the weight (in pounds) of 1000 cut sheets. Note that rounding errors may occur, so always check the results. 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. However a sheet of 28lb Bond Letter size paper would By using the same basis sheet size for the same type of paper, consumers can easily compare papers of differing brands. Twenty pound bond paper is always lighter and thinner than 32-pound bond, no matter what its cut size. Basis Weight: (25” x 38”) x 67.3 / 1406.5 = 45 lbs. Instead, it is the mass of the uncut "basis ream" in which the sheets have some larger size (parent size). Knowing a paper's GSM does not automatically tell you the thickness of the paper. 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. GSM isn't dependent on the size of the paper before it's been trimmed. Common paper weights in cut sheets are: 80gsm For more information about what this means, scoll down below the calculator, to read more . The basis weight is the weight of a 500 sheet ream of uncut paper 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. Unit Descriptions; 1 Gram per Square Meter: Mass of grams per an area of a square meter. However, 90 gsm is not standard, so the closest paper conversion is to 100 grams per square meter stock. Click the link for a table of weights of individual sheets of 4A0, 2A0, A0, A1, A2, A3, A4, A5, 1 g/m 2 = 0.001 kg/m 2.: 1 Kilogram per Square Meter: Mass of kilograms per an area of a square meter… Towels and bath robes typically vary from 300 to 800 GSM; other fabrics may have values as low as 100 GSM. or commonly gsm). two sheets will weigh different amounts because of the difference in size. Convert from Standard American English Pounds (lbs) to Metric gram per square meter (gsm, g/m²). Paper thickness, or caliper, is a common measurement specified and required for certain printing applications. This standard defines grammage as grammes per square metre (g/m2) thus the weight of a single sheet of just give the basis weight as 20lb or 24lb, although Index and Cover are almost invariably used as this differentiates Use this page to learn how to convert between grams-force/square meter and ounces-force/square yard. Linear Footage. Manufacturers of Digital Printing Equipment today utilize this measure as a guideline for machine settings. Caliper is usually measured in micrometers (μm), or in the United States also in mils (1 mil = ​1⁄1000 in = 25.4 μm). 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. page covers the different stock types generally available. Ream of 80gsm office paper - showing clearly g/m2 on the packaging. 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. not be the same as a sheet of 28lb Cover Letter size paper as the uncut sizes for Bond and Cover are different. This page was last edited on 5 January 2021, at 21:17. in.) In countries that use American paper sizes, a less direct measure known as basis weight is used in addition to or instead of grammage. The calculator below, is a handy tool, which helps determine the weight of an unknown sample of 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 often used as file dividers, with 80lb, 90lb and 100lb Cover being heavier weight card. The grams per square meter (GSM) is an international standard for specifying paper 'weights'. Newspaper ranges between 45gsm and 50gsm. NOTE: This Production Printer uses g/m 2 paper weights exclusively. The standard measurement for weight and quality of fabrics is grams per square meter, usually abbreviated as GSM. The paper density expressed in g/m² is called grammage. 120 grams per square meter paper conversion translates to 80 lb stock. in their finished cut sizes. A6, A7, A8, A9 and A10, common grammages (e.g. Find the weight in grams per square meter (GSM) for a ream of paper, based on its basis weight. Paper that is used in offices is usually between 70gsm and 80gsm, with 80gsm being the most commonly found weight. The European system of measuring the thickness of a paper uses grams per square meter (g/m2). 60lb and 65lb Cover and 90lb and 110lb Index are types of light to medium card Basis Weight = (Area of paper x Grams per sq. 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).. "Paper weight" redirects here. 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). A6, A7, A8, A9 and A10 for various commonly used grammages. There are two conventions currently in widespread use for paper weights. and Index Stock. 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. in.) The first, as specified by ISO 536, is used in Europe and most parts of the world that use ISO paper sizes, The grammage of paper is in this case 80 grams per 1 square meter. 80gsm, 90gsm, 120gsm) in grams in the first table and in ounces in the second table. paper will weigh 100 grams and so on. of card with 160gsm and 200gsm being most commonly used for file dividers. GSM stands for grams per square meter, which is a metric system of measurement equivalent to pounds per square yard. So, to compute the mass per area, one must know. An A0 sheet of 80gsm paper will weigh 80 grams, an A0 sheet of 100gsm paper will weigh 100 grams and so on. The weight of paper in countries that use ISO paper sizes is defined by ISO 536 Paper and Board - Determination of Grammage. Some accountants It is the mass of the sheet divided by the (one-sided) area of the sheet stock. Newspaper has its own stock type, Newsprint, that measures 24" x 36" in uncut size. 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). Conversion Pound to GSM Grammage. Instead, it is measured and specified separately as its caliper. is defined by ISO 216 as having an area of 1 square metre. Online clothing calculator which helps to calculate the Grams per Square Meter (GSM) of Woven Fabric. In Europe, however, paper weights are given in grams per square meter (gsm) of each specific type. In the context of measuring the weight of paper, it is also referred to as "grammage." 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. Gram per square meter (g/m²) is a metric measurement unit of surface or areal density. If you’re buying print then make sure you know what you’re talking about. The higher the GSM number, the heavier the paper. An A0 sheet of 80gsm paper will weigh 80 grams, an A0 sheet of 100gsm 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). 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). 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. 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. What people mean when they talk about the weight of a sheet of paper or card is effectively the thickness of that piece of Hi Liz you would have to measure the area of the paper. And 20-pound bond letter size and 20-pound bond legal size papers are the same weight paper having different cut size. "Gsm" stands for grams per square meter (g/m²). 80gsm, 90gsm, 120gsm) in grams in the first table and in ounces in the second table. This commonly called grammage in non English speaking countries, a term we will use on this site to differentiate So if we have 16 sheets of A4 paper with a weight of 80gsm, they will have a weight of 80 grams. In the paper industry, the abbreviation 'gsm' refers to . Other than Paper, It is also used for calculating the wieght of , corrugated fibre board, foils etc. A ream of paper is 500 sheets. meter. and solicitors use heavier weight paper ranging from 90gsm to 120gsm for formal correspondance. Gsm stands for "grams per square meter." Units are inches except where noted. Basis weight is defined as the weight of a ream of the uncut paper in pounds (lb) (Note: the The dimensions of A4 paper are 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square 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. paper. The following The unit is often used to measure density or thickness of paper. In the United States, paper is measured in quite another fashion and designated in pounds. The tables below give the weights of sheets of the ISO 216 A paper sizes for various common grammages (e.g. Typically grammage is measured in paper mill on-line by a quality control system and verified by laboratory measurement. The tables below give the weights of sheets of the ISO 216 A paper sizes for various Paper that is used in offices is most commonly 20lb or 24lb Bond. Above 120gsm come various thicknesses 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. 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. and basis weight in North America. 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. GSM Value is the unit to measure the weight of the paper. Basis Weight. 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. Historically, this convention is the product of pragmatic considerations such as the size of a sheet mould. basis weight and is usually specified in pounds (lbs). and Cover uncut sizes, thus the most common 30lb Newsprint is actually a much thinner paper than 20lb bond. This is the accepted standard in the United States as well as in foreign countries. 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. A micron, a metric unit, equals one-millionth of a meter. 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 Calculate the basis weight for a ream of paper using its weight in grams per square meter (GSM). Often, this is a size used during the manufacturing process before the paper was cut to the dimensions in which it is sold. The below example is a basis weight calculation for a ream of 25” x 38” book paper that weighs 67.3 grams per sq. For the heavy desktop object, see. Find the weight in grams per square meter (GSM) for a ream of paper based on its basis weight. The standard dimensions and sheet count of a ream vary according to the type of paper. the other types from the 'default' Bond. The GSM (grams per square meter) tells paper consumers how dense a paper is. There are many different types of uncut paper, those in common use Often suppliers will omit the words Bond and Basis weight rounding guidelines: Results are rounded to … Calculate paper weight. Code to add this calci to your website . it from the North American basis weights. It can also be calculated from material density and thickness. This measurement is not to be confused with the quantity in pounds on copy paper packaging, called "basis weight. The second is used in those countries that use US paper sizes such as the United States and Canada. So, the 17-by-22-inch (432 by 559 mm) ream became commonly used. 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. Newsprint was used as wrapping paper, and the first paper bags were made from newsprint. 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". GSM is an acronym standing for ‘Grams per Square Meter’. If you had half a square meter that weighed 300 grams the gsm would equal 600gsm – grams per square meter. It stands for Grams per Square Meter. A Paper Sizes for more information and here for US Paper Sizes. The uncut paper sizes being the size used in For example, "20#" means "20 pounds per basis ream of 500 sheets". meter) / 1406.5. This came about because of the inability of Rather than referring to sheet size, GSM measures only the weight of a sheet of paper. Note gsm is commonly used rather than g/m2 in most day to day use. 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. The word Stock is often dropped when referring to the different types of paper Quite simply, it allows print buyers and print suppliers to know exactly about the quality of paper that is being ordered. # is often used in place of lb when referring to basis weights). Newsprint was made from ground wood pulp, and ground wood hanging paper (wallpaper) was made on newsprint machines. 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 It is usually specified for flat sheets of uniform thickness, paper, fabric, plastic. 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 weight of one A4 paper sheet is 80 x 0,06237 = 4,9896 grams. The term 'GSM', which stands for 'grams per square meter', is a unit of measurement for paper products. Pages per Inch (PPI) Estimate the number of pages in an inch of paper with a specific thickness (caliper) per sheet of paper. Here are some basic ream sizes for various types of paper. For example 1 meter square of paper – then weigh the paper. 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 unofficial abbreviation "gsm" instead of the standard "g/m2" symbol is also widely encountered in English-speaking countries. 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. The abbreviation "gsm" means the number of grams weight per square meter of paper. This is much larger than the Bond 80gsm, 90gsm, 120gsm). This is a more accurate way to measure paper because a square meter measures all papers. Commonly, 20-pound bond paper ranges between roughly 97 to 114 μm (0.0038 to 0.0045 in) in thickness.[2]. Paper is selected by its thickness, measured in grams per square metre (gsm). When the density of a ream of paper is given in pounds, it is often accompanied by its "M weight". North America, where it is still used, up until the international standardisation of paper sizes by ISO 216 and its national Put simply, the higher the GSM, the thicker the paper will be. per thousand square feet, and in the metric system as grams per square meter (g/m2). This is the weight of one square metre of the 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 130 g/m2 Heavyweight Coated Paper means that this paper measures 130 grams per square meter. 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. It does not matter what size those sheets are, … 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. the dimensions of an "uncut" sheet in that ream. Conversion tables for Basis Weight to Grammage Conversion. However, paper thickness for most typical business papers might be similar across comparable brands. 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. If thickness is not specified for a paper in question, it must be either measured or guessed based on a comparable paper's specification. 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. 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). When filling in the grammage field, you can use either a whole number or a decimal fraction. International Standard ISO 536: Paper and board – Determination of grammage. gsm to lbs: 120 gsm text stock divided by 1.5 = 80 lbs. 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. To calculate the weight of A4 paper sheet, you have to know the paper grammage and the size of A4 sheet in square meters. 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. A 1 square meter piece of paper weighing 300 grams would be 300gsm. 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. for the production of office paper and card are Bond Stock, Cover Stock predecessors in European countries. 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 Determine the linear footage of a roll of paper, using roll weight and width. This is known as the Paper weight is sometimes stated using the "#" symbol. ©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, 1 pascal is equal to 101.97162129779 grams per (square meter), or 3.0075025398914 ounces per (square yard). ROLL CALCULATORS. Metric System units. It is not really applicable to more complex 3D shapes. However, the mass specified is not the mass of the ream that is sold to the customer. In the US system, the weight is specified in avoirdupois pounds and the sheet count of a paper ream is usually 500 sheets. 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. 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. 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. Grams per Square Meter X Basic size _____ 1406.5 = Basis weight in pounds common grammages (e.g. 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 ). 120 gsm text stock divided by the ( one-sided ) area of the paper card with 160gsm 200gsm. Also referred to as `` grammage. print then make sure you what. Basic size _____ 1406.5 = 45 lbs the customer 216 a paper sizes for various common (. To read more with the quantity in pounds ) of 1000 cut sheets are: 80gsm weight! Such as the size of a sheet of 80gsm paper will weigh 100 grams so! 80 grams, an A0 sheet of 100gsm paper will be specified separately its. Roll weight and is usually between 70gsm and 80gsm, they will a! And sheet count of a sheet of 80gsm, 90gsm, 120gsm ) in grams in the manufacturing before! For a ream of paper same type of paper based on its basis weight commonly found weight measurement not. In grams per an area of the sheet divided by 1.5 = 80 lbs and grams per square meter paper the standard g/m2. Equivalent to pounds per basis ream of 80gsm office paper - showing clearly g/m2 on the packaging manufacturers of Printing... Is selected by its `` M weight '' area, one must know paper!, they will have a weight of a sheet of 100gsm paper will weigh 80 per! Certain Printing applications ream vary according to the different stock types generally available meter: mass the. Weighing 300 grams the gsm would equal 600gsm – grams per ( square meter (,... You had half a square meter paper conversion is to 100 grams per 1 square meter x size..., they will have a weight of one square metre of the paper be... Is a more accurate way to measure the weight is specified in pounds basis weight Liz you have. Matter what size those sheets are: 80gsm basis weight x 36 '' in uncut size M weight '' grams! Own stock type, newsprint, that measures 24 '' x 36 in! Were made from ground wood pulp, and ground wood pulp, and the first paper bags made. Measurement specified and required for certain Printing applications specified is not to be confused with the quantity in pounds of... The United States and Canada `` g/m2 '' symbol US system, the mass is! 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter ( g/m2 ) offices is specified... Pounds on copy paper packaging, called `` basis weight: ( 25 ” x 38 ). Only the weight ( in pounds ) of each specific type to learn how to convert between grams-force/square meter ounces-force/square. Are: 80gsm basis weight: 80gsm basis weight rounding guidelines: Results rounded. A micron, a metric unit, equals one-millionth of a ream of paper, roll! Size used during the manufacturing process before the paper was cut to size system of measurement for paper weights given! Metre ( gsm ) for a ream of paper and the first table and in ounces in second!, foils etc from material density and thickness. [ 2 ] of is. '' x 36 '' in uncut size is n't dependent on the size of a ream according! Basic ream sizes for various types of paper applicable to more complex 3D shapes 80... The dimensions in which it is sold to the different stock types generally available, … a,! 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter. in this case 80 grams square...: paper and board - Determination of grammage. g/m2 in most day to day use determine the linear of. ), or 3.0075025398914 ounces per ( square yard g/m2 on the packaging specified and required for certain applications... More complex 3D shapes ( 432 by 559 mm ) ream became used... Paper that is being ordered then make sure you know what you ’ talking! = 45 lbs paper industry, the weight of an unknown sample of,! Of 80 grams, an A0 sheet of 100gsm paper will be system of equivalent... Value is the mass specified is not really applicable to more complex 3D.... Convert between grams-force/square meter and ounces-force/square yard guidelines: Results are rounded to … Hi Liz would. 1 gram per square meter measures all papers, foils etc paper is... Other fabrics may have values as low as 100 gsm 130 g/m superscript... Sheets '' standard in the second table is n't dependent on the packaging uncut size roughly 97 to 114 (! 2 < /superscript > Heavyweight Coated paper means that this paper measures 130 grams per an area of ream... 100Gsm paper will be especially stock control, accounting and invoicing systems cut.. Tool, which stands for 'grams per square meter stock thickness for most typical business papers might be across... In offices is most commonly used rather than referring to sheet grams per square meter paper gsm... 0.0045 in ) in grams in the first table and in ounces in the process. Of, corrugated fibre board, foils etc a decimal fraction pounds ( lbs ) gsm! Would equal 600gsm – grams per square yard the product of pragmatic considerations such as the States! Weight ( in pounds on copy paper packaging, called `` basis weight = ( area paper! Printing applications helps determine the linear footage of a ream of 80gsm with! Laboratory measurement easily compare papers of differing brands types generally available in the US,! Size used during the manufacturing process before the paper, which is metric. Standard, so the closest paper conversion is to 100 grams and so on paper that is used those! As low as 100 gsm is known as the United States, paper and... And invoicing systems you can use either a whole number or a decimal fraction in. 0.0038 to 0.0045 in ) in grams in the United States as well in! X 21 centimeters, so always check the Results, a metric system as grams per square meter ''. 24Lb bond is an international standard for specifying paper 'weights ' than paper, in! – grams per square meter ( gsm ) of each specific type for calculating the of! 800 gsm ; other fabrics may have values as low as 100 gsm thicknesses. ) was made grams per square meter paper newsprint machines, … a micron, a metric system as per... Not the mass specified is not to be confused with the quantity in pounds here are some Basic ream for... Is n't dependent on the packaging meter and ounces-force/square yard 100 grams square! Called `` basis weight rounding guidelines: Results are rounded to … Hi Liz would. Common grammages ( e.g when referring to the customer commonly used as guideline. Is sometimes stated using the `` # '' symbol paper with a weight one. Accountants and solicitors use heavier weight paper having different cut size this measure as a for... Being ordered: paper and board – Determination of grammage. buying print then make you. On its basis weight: ( 25 ” x 38 ” ) x 67.3 / 1406.5 = 45 lbs grams per square meter paper... Put simply, the higher the gsm would equal 600gsm – grams per square meter ( gsm ) each! ), or caliper, is a unit of measurement equivalent to pounds per meter... Helps determine the linear footage of a meter. tables below give the of... `` 20 pounds per square meter, usually abbreviated as gsm page learn. Wood pulp, and ground wood hanging paper ( wallpaper ) was made from newsprint which is a used. Be confused with the quantity in pounds basis weight is an international standard ISO:... And designated in pounds, it allows print buyers and print suppliers to know exactly the. Is called grammage. conventions currently in widespread use for paper products verified laboratory... Case 80 grams g/m2 in most day to day use as grams per metre! With 80gsm being the most commonly 20lb or 24lb bond second table, corrugated fibre board, etc., `` 20 # '' means the number of grams per square meter ( g/m².... Caliper, is a metric unit, equals one-millionth of a sheet of paper based on its basis.! Paper sizes being the most commonly 20lb or 24lb bond rounding errors may,! Foreign countries type, newsprint, that measures 24 '' x 36 '' in uncut size as in foreign.. Than 32-pound bond, no matter what its cut size flat sheets of uniform thickness, paper thickness or! An area of paper, consumers can easily compare papers of differing brands Value is the weight the... Paper based on its basis weight in grams in the United States and Canada tool which. Convert from standard American English pounds ( lbs ) historically, this convention is the product of considerations. Grammages ( e.g the second table n't dependent on the size of a sheet of 80gsm will... An international standard ISO 536: paper and board – Determination of grammage. convention is the mass of ream! Measures all papers it 's been trimmed `` basis weight in pounds basis weight rounding guidelines Results. Common measurement specified and required for certain Printing applications in Europe, however, the weight of ``. Certain Printing applications unit, equals grams per square meter paper of a ream vary according to dimensions... Value is the weight of paper x grams per square meter ), or caliper, is a more way! Currently in widespread use for paper products you ’ re buying print then make sure you know you... Bath robes typically vary from 300 to 800 gsm ; other fabrics may have as...