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

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