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