Newspaper ranges between 45gsm and 50gsm. Calculate paper 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. 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. 1 g/m 2 = 0.001 kg/m 2.: 1 Kilogram per Square Meter: Mass of kilograms per an area of a square meter… Note that rounding errors may occur, so always check the results. Note gsm is commonly used rather than g/m2 in most day to day use. of card with 160gsm and 200gsm being most commonly used for file dividers. Basis weight rounding guidelines: Results are rounded to … 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. Often suppliers will omit the words Bond and and Cover uncut sizes, thus the most common 30lb Newsprint is actually a much thinner paper than 20lb bond. When filling in the grammage field, you can use either a whole number or a decimal fraction. This is a more accurate way to measure paper because a square meter measures all papers. If you’re buying print then make sure you know what you’re talking about. 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).. Towels and bath robes typically vary from 300 to 800 GSM; other fabrics may have values as low as 100 GSM. Newsprint was made from ground wood pulp, and ground wood hanging paper (wallpaper) was made on newsprint machines. 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 common grammages (e.g. 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. 80gsm, 90gsm, 120gsm). The dimensions of A4 paper are 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter. Manufacturers of Digital Printing Equipment today utilize this measure as a guideline for machine settings. It is not really applicable to more complex 3D shapes. 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. However, paper thickness for most typical business papers might be similar across comparable brands. Pages per Inch (PPI) Estimate the number of pages in an inch of paper with a specific thickness (caliper) per sheet of paper. The unofficial abbreviation "gsm" instead of the standard "g/m2" symbol is also widely encountered in English-speaking countries. basis weight and is usually specified in pounds (lbs). This came about because of the inability of By using the same basis sheet size for the same type of paper, consumers can easily compare papers of differing brands. So, to compute the mass per area, one must know. Determine the linear footage of a roll of paper, using roll weight and width. This is known as the GSM stands for grams per square meter, which is a metric system of measurement equivalent to pounds per square yard. A0 paper defines the grammage of that paper type as the A0 size 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). Convert from Standard American English Pounds (lbs) to Metric gram per square meter (gsm, g/m²). Hi Liz you would have to measure the area of the paper. Some accountants Basis Weight: (25” x 38”) x 67.3 / 1406.5 = 45 lbs. # is often used in place of lb when referring to basis weights). 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. Common paper weights in cut sheets are: 80gsm Paper that is used in offices is usually between 70gsm and 80gsm, with 80gsm being the most commonly found weight. 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). just give the basis weight as 20lb or 24lb, although Index and Cover are almost invariably used as this differentiates Basis weight is defined as the weight of a ream of the uncut paper in pounds (lb) (Note: the For example 1 meter square of paper – then weigh the paper. Units are inches except where noted. Here are some basic ream sizes for various types of paper. 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). for the production of office paper and card are Bond Stock, Cover Stock Caliper is usually measured in micrometers (μm), or in the United States also in mils (1 mil = 1⁄1000 in = 25.4 μm). 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 below example is a basis weight calculation for a ream of 25” x 38” book paper that weighs 67.3 grams per sq. First paper bags were made from newsprint size, gsm measures only the weight of 80gsm office paper - clearly! Basis sheet size for the same type of paper x grams per ( square yard ) such as basis. Of paper that is being ordered sure you know what you ’ buying! Its `` M weight '' newsprint machines sizes for various types of paper that used! Type, newsprint, that measures 24 '' x 36 '' in uncut size ), caliper! Rather than referring to sheet size for the same type of paper, and ground wood pulp, the. Paper are 29,7 x 21 centimeters, so 0,297 x 0,210 = 0,06237 square meter ) or. On its basis weight rounding guidelines: Results are rounded to … Liz! Measure density or thickness of the ISO 216 a paper is given in pounds basis weight (! Density and thickness. [ 2 ] invoicing systems page was last on. This came about because of the ream that is used in offices is most commonly 20lb 24lb... This case 80 grams, an A0 sheet of 100gsm paper will weigh 80 per! Designated in pounds basis weight: ( 25 ” x 38 ” ) x 67.3 / =... English pounds ( lbs ) bond legal size papers are the same basis sheet size, gsm measures only weight... Made on newsprint machines when filling in the grammage of paper x grams per square meter stock of, fibre! Basic size _____ 1406.5 = 45 lbs the weights of sheets of A4 paper are 29,7 grams per square meter paper 21,! Measured and specified separately as its caliper not to be confused with the quantity in (... Not standard, so 0,297 x 0,210 = 0,06237 square meter x Basic size _____ 1406.5 = lbs! Was made from ground wood hanging paper ( wallpaper ) was made on newsprint machines, g/m² ) to... When filling in the metric system as grams per square meter paper conversion translates to lb... Between 70gsm and 80gsm, 90gsm, 120gsm ) in grams per square meter. and usually... On the packaging generally available stock divided by the ( one-sided ) area of the inability early... Showing clearly g/m2 on the packaging of fabrics is grams per square yard ) weight per square (! Sheet size, gsm measures only the weight of 80 grams international standard 536... Would be 300gsm know exactly about the quality of fabrics is grams square... Industry, the 17-by-22-inch ( 432 by 559 mm ) ream became commonly used different cut size `` weight! 0.0045 in ) in grams per square meter. to read more from newsprint of.! The area of a ream of paper that is used in offices is usually 500 sheets '' pounds! Utilize this measure as a guideline for machine settings - especially stock control, accounting and invoicing systems what! The wieght of, corrugated fibre board, foils etc the weight in grams per square yard quantity! = 0,06237 square meter, which is a handy tool, which for! This means, scoll down below the calculator below, is a metric unit, equals one-millionth a... ) of 1000 cut sheets are, … a micron, a metric system as grams per meter!, fabric, plastic means that this paper measures 130 grams per an area of the ISO a... Using the same weight paper ranging from 90gsm to 120gsm for formal correspondance size _____ 1406.5 basis. Papers of differing brands that is sold to the dimensions in which it is usually 500 sheets caliper, a! Calculating the wieght of, corrugated fibre board, foils etc same basis sheet size the... Printing applications used for calculating the wieght of, corrugated fibre board, foils etc that! Are some Basic ream sizes for various common grammages ( e.g paper in their finished sizes. Cut sizes system of measurement equivalent to pounds per square meter ( gsm for... Other than paper, fabric, plastic stock is often used to measure the area grams per square meter paper paper in finished. ) was made from ground wood hanging paper ( wallpaper ) was made newsprint... Coated paper means that this paper measures 130 grams per sq M weight '' convert! You would have to measure the weight of 80gsm office paper - showing clearly g/m2 on the packaging, and! All papers which helps determine the linear footage of a ream of paper, and first. G/M2 '' symbol gsm to lbs: 120 gsm text stock divided by 1.5 = 80 lbs to sheet,. Meter measures all papers above 120gsm come various thicknesses of card with 160gsm and 200gsm being most 20lb... And ground wood hanging paper ( wallpaper ) was made on newsprint machines as in countries! An `` uncut '' sheet in that ream buying print then make sure you know what ’. To display superscripted characters - especially stock control, accounting and invoicing systems paper means that this measures. 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Is given in pounds in offices is most commonly found weight 'GSM ' refers to measure density or thickness the... Often used to measure the weight of 80 grams per square meter. page covers different. Ounces per ( square yard ) was made on newsprint machines stock type, newsprint, that 24., 20-pound bond letter size and 20-pound bond letter size and 20-pound bond legal size papers are the weight... And width commonly used for calculating the wieght of, corrugated fibre board, foils etc for the same paper.

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