Designer Stationery, Fountain Pen Inks, Art & Gifts. Notebook Subscription just 5,80€/month - worldwide shipping include * To calculate the ream weight, multiply the actual sheet size by the paper's basis weight and divide the result by the paper's basic size*. Using this formula, the ream weight of 500 sheets (one ream) of tabloid size 11-inch-by-17-inch, 24 lb. book paper with the basic size of 25-inches-by-38-inches is: (11x17) x 24 / 25x38 = ~ 4.72 pound

- How much a ream of paper weighs depends on the thickness of the sheets. A 500-sheet ream of 20-pound bond paper weighs 5 pounds, while a 500-sheet ream of 24-pound bond paper weighs 6 pounds. Bond paper in the United States comes in 17-inch by 22-inch sheets, which is cut into four letter-size sheets
- e the ream weight of any given size sheet, multiply the square inches in the given size by the given basis weight; divide the result by the square inch area of the basic size
- Ream of 65lb Cover Stock. 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 North America, where it is still used, up until the international standardisation of paper sizes by ISO 216 and its national predecessors in European countries
- When manufacturers produce paper, they weigh it 500 sheets at a time, and that number in pounds is documented as the weight of the paper. So does that mean that a ream (500 sheets) of 8.5 x 11 20 lb. plain Bond paper weighs 20 pounds? It does say 20 lb. right here the label after all
- If 500 sheets of Bond paper (17 x 22 inches) weigh 20 lbs, then a ream of paper cut to Letter size will be labeled as 20 lb. And if 500 sheets of Cover paper (20 x 26 inches) weigh 65 lbs, then a ream of this paper trimmed to tabloid size would be marked as 65lb. This may be a lot to grasp, but don't feel overwhelmed
- A ream of paper is a quantity of sheets of the same size and quality. International standards organizations define the ream as 500 identical sheets. This ream of 500 sheets (20 quires of 25 sheets) is also known as a 'long' ream, and is gradually replacing the old value of 480 sheets, now known as a 'short' ream
- The weight is in pounds (#) of a ream of paper, which is 500 sheets. The paper stock can be different types, and different weights. But, the weight is based on a ream. Metric System is standard in Asia and Europe

- Basis Weight is the weight of a sheet of paper based on standard size. Paper types are categorized by their base size in the U.S. These base sizes are used to calculate a paper's basis weight. The basis weight equals the ream (500 sheet) weight of the base size, hence the term basis weight
- A ream of paper is a wrapped pack containing 500 sheets of paper. Copy and printer paper is sold by individual reams but also in cases which might include 5 or 10 reams. Other cases are reamless and could have 2000 sheets of paper not separated into reams
- The standard office copy paper weight is most commonly called 20 lb. bond. Standard office copy paper weighs approximately 10.0 lbs per 1000 sheets. Office copy paper is the cheapest blank white paper you can buy. Another name for this same copy paper weight is: 50 lb. uncoated tex
- Ream = 500 sheets of paper Since the paper and printing industry began, different businesses used different ream sizes due to the application they were making. For example, 24# Bond means that 500 sheets, 17 x 22 in dimension will weigh 24 pounds. Example #2, 90# Cover Stock means that 500 sheets of 20 x 26 paper will weigh 90 pounds
- Hammermill Premium Laser Print 8.5 x 11 Multipurpose Paper, 24 lbs., 98 Brightness, 500/Ream (104604

- Sheets less than 336 sq. in - ream weight calculated to nearest one hundredth of a pound. CALCULATING M WEIGHTS As the ream weight is the weight of 500 sheets, and the M weight is the weight of 1000 sheets, it should be appar-ent that the M weight can be obtained by first finding the ream weight, rounding it by the rounding rules and then Given.
- ated heavy-weight printing paper made to a thickness of .006 or higher. Bristols are often used for printed items that require repeated handling
- Basis weight is the weight in pounds of a ream of paper (500 sheets), but each paper grade uses a different paper size. The below chart provides a comparison between the paper types, sheet size and the weight in pounds. For a universal comparison, grams per square meter (gsm) is a good comparative measure because it does not vary with sheet size

Grammage-to-Basis-Weight Calculator 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. When filling in the grammage field, you can use either a whole number or a decimal fraction Buy Ream of Paper Weight including Cream 20lb Unpunched Binding Paper - 500 Sheets (PPP20DMCR85X11-11), Goldenrod 20lb Unpunched Binding Paper - 500 Sheets (PPP20DMGO85X11-11), Gray 20lb Unpunched Binding Paper - 500 Sheets (PPP20DMGY85X11-11), Orchid 20lb Unpunched Binding Paper - 500 Sheets (PPP20DMOR85X11-11), Brands: MyBinding, Categories: Brands, Binding, Binding Supplies, Unpunched Paper The manufacturer would cut a sheet that big into four letter-size sheets, so a 500-sheet **ream** **of** 20-pound bond **paper** weighs 5 pounds. If it was something other than bond **paper**, then the size of the standard sheet used to determine the **weight** might be different

This paper is 80 gsm which makes it ideal for a range of applications. It's A4 size which makes it convenient for everyday use. There are 500 sheets in each ream. It has a CIE whiteness of 165 for high contrast. This product is FSC certified, so you can be sure your purchase supports healthy forests and protects wildlife ** HP Printer Paper 8**.5x11 MultiPurpose 20 lb 1 Ream 500 Sheets 96 Bright Made in USA FSC Certified Copy Paper HP Compatible 112000R Amazon Basics Multipurpose Copy Printer Paper - 96 Bright White, 8.5 x 11 Inches, 1 Ream (500 Sheets

* Paper weight, also known as BASIS WEIGHT is measured in pounds per 500 sheets within it's category If 500 sheets of a standard sheet in a category weights 100 lbs*., then the paper weight / basis weight of that type of paper will be 100 lb A ream of paper is a wrapped pack containing 500 sheets of paper. Explore the assortment of copy paper in one ream packs at Office Depot

10 ream case-92 bright white, 20 lb standard weight 8.5 x 11 Inches letter size paper, Each ream is 500 sheets, 5000 sheets total Acid free for archivability Sustainable Forestry Initiative Certified - Fiber Sourcing Standar The convention used in the United States and a few other countries using US-standard paper sizes is pounds (lb) per a ream of 500 (or in some cases 1000) sheets of a given (raw, still uncut) basis size. Japanese paper is expressed as the weight in kilograms (kg) per 1,000 sheets Target / School & Office Supplies / Paper / Printer Paper Xerox Bold Digital 8.5 x 11 Bond Paper 24 lbs. 98 Brightness 500/Ream 3R11540. Xerox. $113.39. reg $131.24. Sale. Sold and shipped by MyOfficeInnovations. a Target Plus™ partner. 100 Sheets Printer Paper 8.5x11 Tropical - Astrobrights Re: grams/square meter to pounds/ream by Wilfred on 10/07/05 at 20:02:32 There is an easy way to understand paper sheet size, and paper weight. The sheet size 8.5 inches x 11 inches is nearly the same as the A4 sheet size which is part of the metric system The printer's ream of 516 sheets was used, before the standardisation on 500 sheet reams, when purchasing paper to ensure that wastage during the print process did not leave the finished job short of a standard ream (e.g. when producing headed paper for typing that would have been ordered by the ream). Weight of Sheets & Reams Calculato

X Basis wt. / (Area of basic size) = Rounded ream wt. X 2 = M-Weight The M-weight of a sheet of 11×17 book paper with a basis weight of 70 lbs. is: (11×17) X 70 / (25×38) = 13.78 X 2 = 27.56. The area of the given sheet size is 11 x 17 = 187 inches2. Since this is less than 336 inches2, ream weight should be rounded to the nearest. * 1*. the 'gsm' weight/quality of the paper. 2. the size of each sheet in the ream. A ream (500 sheets) of A4 paper, 80 gsm, weighs about 2.4 Kg But a ream of A3 size paper, a sheet of which is twice. We have recently provided paper weight meters on every page to help you pick the perfect paper weight. Learn more about Paper Weights. This is why, sometimes, the same weight paper may be referred to as two different things. For instance, regular everyday copy paper is most commonly referred to as a 20 lb. bond but is other times referred.

Paper Weight Chart: Paper is confusing. There are different types, weights (thicknesses), and paper sizes. The chart below details the equivalent weights (in pounds) between paper types, as well as notes in the left margin to show when certain types of paper are most appropriate That's because weight in pounds isn't calculated by the ream, but rather by the weight of the uncut paper. So, if 500 sheets of uncut cardstock weigh 65 lbs, it's called 65 lb stock. Point is calculated by the thousandths of an inch thickness of sheets of paper Grammage (mass on ream basis) Pounds per ream (lb/ream) per 3000 square feet (lb/3000 ft 2) 1.6275: Grams per square meter (g/m 2) Grammage (mass in grams per square meter) Pounds per 1000 square feet (lb/1000 ft²) 4.8824: Grams per square meter (g/m 2) Thickness : Millimetres (mm) Mils (or points or thousandths of an inch) 1000 25.4.

Insert the basis weight of the paper to be coated in the formula below. lbs/MSF = 2000.00 : MSF/ton: lbs/Ream = 6600.00 : MSF/ton: lbs/Ream = 2000.00 : Reams/ton: Metric Conversion: g/m² = 4876.57 : m²/mton: From the formulas below, enter dry pounds (or grams) of coating per area coated to calculate amount of dry coating per tonnage. dry lbs. Calculate easily with this online-tool the weight of paper and printproducts, flyers, letters, stationary etc. in connection with different formats and paper weights / grammages. Tedious fiddling with your calculator will becomme irritants of the past. Today there are features like preview, specifications for standard formats and the. Weight selections for printer paper are often displayed as numbers and hash symbols. The # symbol refers to how much each ream weighs in pounds. For example, an 80-pound ream of cover stock may be sold as 80# cover. Cardstock paper weight is measured in points

Indicated weight (lb) for 500-sheet ream cm2 9,070 Indicated weight (lb) for 500-sheet ream in.2 1,406 9.1.1 If the ream weight in pounds (BW) has been determined for a customary trade size of 500 sheets, the grammage in g/m2 may be calculated as follows: G = P × BW where P is the conversion factor given in Table 2. 2 Basis-Weight-to-Grammage Calculator. This calculator determines the weight (in grams per square meter) for a ream of a given basic size and grade of paper based on its basis weight in pounds. When filling in the basis weight field, you can use either a whole number or a decimal fraction

- Basis weight is the total weight, in pounds, of a ream of paper. A ream of paper is 500 sheets and is the standard ordering unit for paper. Because paper comes in different sizes and widths, the basis weight of paper can vary from ream to ream. One way to calculate basis weight involves using both metric and customary (inches) units in a formula
- Letter paper is 8 ½ by 11 inches, but it's usually weighed uncut at 17 by 22 inches, meaning that each uncut sheet generates four cut sheets. That means that the weight printed on a ream of letter paper is actually four times the weight of the paper in the container
- e the M Weight, ream weight and weight for a given number of sheets of paper in the specific size entered. Roll Weights. Calculate the approximate weight of a roll of paper. Basis Weight / Metric Conversions. Convert basis weight (in pounds) for a ream of standard basis size papers to the metric equivalent (in grams per meter²) and.

- Basis weight, also known as paper grade or paper density, indicates the weight of one ream of paper, measured in pounds. One ream of paper consists of 500 sheets of paper. Simple, right? Wrong. Picture a standard pack of 500 sheets of regular desktop printer paper (known by paper aficionados as bond paper)
- ed by the weight of an entire ream (i.e. 500 sheets) of paper for a specific grade of paper (e.g. book-grade, bond-grade, cover-grade, etc.). For envelopes, we use bond-grade paper, such as wove, surface enhanced white wove, kraft, recycled, specialty or tear-resistant paper, where a standard sheet is 17x22
- Paper Weights Simplified Paper weights can be very confusing. We would like to offer a very general understanding of paper weights. This is not technical, but we will associate common weights with everyday items you may come in contact with. Here at Cutcardstock, we deal with two basic weights: TEXT WEIGHT and COVER
- Find the weight in grams per square meter (GSM) for a ream of paper, based on its basis weight. 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.
- Other articles where Ream weight is discussed: papermaking: Substance and quantity measurement: The term ream weight commonly signifies the weight of a lot or batch of paper. Since the printing trades use a variety of sheet sizes, there can be numerous ream weights for paper having the same basis weight
- An easy calculation shows that a ream of kraft consists of 267,5607552 sqm of paper (480*24*36*2,54²/10000); this is a constant. If we multiply the given lb-value with (0,453592*1000) we get the total ream weight in grams, which we divide by the ream constant to get gsm
- The weights of different paper grades are calculated using each grade's basis weight. First, let's define some key ideas-paper grades, base ream, and basis weight: Paper Grades: Different types of papers with their own characteristics and end use

Paper is measured either in pounds per 500 sheets (one ream of paper) or in pounds per 1,000 sheets (see below) of a standard size of sheet based on the group or category of papers being graded. The different types of grades are Bond, Book, Text, Cover etc. Each group of the grade of paper is assigned a standard size that all weights are. M-Weight Formula. Rounded ream weight = (Area of given sheet size x Basis weight) / Area of paper. M-Weight = Rounded ream weight x 2. The below is an example M-Weight calculation for a sheet of 11 x 17 book paper with a basis weight of 70 lbs A wide variety of weight of a ream of paper options are available to you, such as glass. You can also choose from a4. As well as from anti-curl, moisture proof, and antistatic. And whether weight of a ream of paper is 80g. There are 56 weight of a ream of paper suppliers, mainly located in Asia Some of other weights for bond paper are: 16lb, 24lb, 28lb & 32lb. These would be thicker and thinner variations of the initial 20lb bond. So when you are carrying 4 reams of your standard size (8-1/2 x 11) office paper you are in fact carrying 20 lbs of paper, as 8-1/2 x 11 is ¼ of a 17 x 22 sheet

Paper Weight and Paper Brightness Options With our Office Depot Brand printer paper collection, you'll be able to select a paper weight and paper brightness level that works for your needs. Choose from 92, 94, 96, 97 or 98 paper brightness levels in 20 lb, 22 lb or 28 lb paper weights, which are great for a variety of printing and copying. A paper ream is a package of 500 sheets of paper of the same quality and style that have been cut to the same size. Consumers often purchase paper in the form of reams, while printers may work in even bigger volumes. This amount is also used as unit of base measurement for calculating the weight of paper, which is a reference to its density

Divide the weight by the number of pieces of paper in a ream. For example, an average sheet of 20 lb. ink jet paper fits four pieces of paper to a sheet, and there are 500 sheets in a ream. In this case, you would divide 20 by 2,000, as there are 2,000 pieces of ink jet paper in a ream The Basis weight of paper is calculating by the weight per unit area. It is mainly expressed as GSM (grams per square meter) and pounds per ream (500 sheets) of a specific size. It is also expressed in kg/m2, pounds per 1000 sq. ft etc. Grammage are used in non-metric countries More Information. M Weight is the weight of 1,000 sheets (2 reams) of paper.Note that W Weight is the weight of any size paper. Unlike basis weight (which is measured for a paper type-specific reference size , M Weight is simply the weight of 1,000 sheets of any particular cut-sheet size.Larger dimensions result in higher M Weights, and smaller dimensions result in smaller M Weights Given the basis size of a ream of kraft and the lb-value, one can easily calculate gsm (grams per square meter) and vice versa. The paper weight in gsm turns out to be approx. 1,695 times the lb-value. Thus, when knowing gsm the paper weight in lbs is about 0,59 times the gsm-value

JK Paper Mills, JK Paper Ltd. : customercare@jkmail.com Brand JK Model Number Copier Colour White Corner/Edge Style Square Cover Material Paper Material Paper Expansion 500 Number of Items 500 Size 1 Ream / 500 sheets Sheet Size A4 Brightness Rating 94 Candela Paper Finish Smooth Line Size 1 Inches Manufacturer Part Number 890231010000 Paper comes in many weights. One ream of paper will weigh more than another depending on the individual thickness of each sheet. For example, a sheet of spiral notebook paper weighs less than paper you use in a copier. 0 1. jeff r. 7 years ago. 1 Ream of 500 sheet 80gm A4 paper is 2.6kg or 5.7 pounds. 0 0 Standard printing **paper** is often 80gm/sq.m. A4 **paper** is 210 x 297 = 62,370 sq. mm = 0.06237 sq. m. **Weight** **of** A4 = 0.06237 x 80 = 4.97 gram Basis weight is the weight of one ream of paper (500 sheets) when cut to the industry standard for that specific grade of paper. Therefore, the higher the basis weight, the heavier the paper. This weight may differ from the actual weight of the product being sold, so to differentiate the two, basis weight is often notated with a # sign. Ream definition, a standard quantity of paper, consisting of 20 quires or 500 sheets (formerly 480 sheets), or 516 sheets (printer's ream, or perfect ream ). See more

Each ream contains 500 sheets of 20-pound, 92 brightness white paper in 8.5? x 11? letter size. Georgia Pacific multipurpose paper is Sustainable Forestry Initiative Certified. Georgia-Pacific Standard Multipurpose Paper, 8.5 x 11, 20 lb., 92 Brightness, 10 Ream Case, 5,000 Sheets Multi-Use Paper, Letter Size (8-1/2 x 11), 94 (U.S.) Brightness, 20 Lb, Ream Of 500 Sheets, Case Of 8 Reams - Designed for use in most printers, copiers and all-in-ones, Office Depot paper is an ideal option for stocking your office. This letter-size paper offers 94 brightness in white with 500 sheets per ream in a case of 8 reams Whether you need a ream of paper or 500 cartons of multipurpose paper, we are the best distributor for your company. We partner with top paper manufacturers such as Boise, Hammermill, HP, Double A, Finch, Neenah Paper, and more! W.B. Mason additionally provides its own line of paper brands, including Blizzard, Flagship, mycopy, myface, and myimage Basis Weight • Historically paper was sold in reams, usually packs of 500 sheets or a specified length and width (not universal) • Basis Weight, ream weight, and substance are all names for mass or weight of one ream of paper (lb) Paper Grade Ream Size Writing and Printing 17 inches X 22 inches Newsprint 24 inches x 36 inche Ream of Paper = 500 Sheets Weight = 5kg: A4 Box of Paper = 5 Reams Weight = 12.5kg-----A3 Box of Paper = 5 Reams Weight = 25kg: A4 Pallet of Paper = 80 Boxes Weight = 1000kg-----A3 Pallet of Paper = 40 Boxes Weight = ± 1 ton : The Better Performance Paper www.rotatrim.co.za • Mondi Group.

buy online & pick up in stores shipping same day delivery include out of stock Canvas Pads Cardstock Paper Construction Paper Continuous Feed Paper Craft Paper Drawing Paper Index Cards Legal Pads Letterhead Loose Leaf Filler Paper Mixed Media Pads Notepads Paper Rolls Photo Paper Planner Refills Printable Perforated Paper Printer Paper. Paper weight (not necessarily the same thing as thickness, but it usually translates) is measured either in grams per square meter (gsm) and/or pounds per ream (lb). There are two major problems when judging paper according to pounds per ream. One, though a ream is typically comprised of 500 sheets, it doesn't have to be A pallet of copier paper (20-lb. sheet weight, or 20#) contains 40 cartons and weighs 1 ton. Therefore, 1 carton (10 reams) of 100% virgin copier paper uses .6 trees . 1 tree makes 16.67 reams of copy paper or 8,333.3 sheets. 1 ream (500 sheets) uses 6% of a tree (and those add up quickly! Paper weight: 20 lbs. Brightness rating of 92 for sharp, clear print results White paper with a smooth finish Great for everyday use 500 sheets per ream, 10 reams per carton, 5000 sheets total Paper is acid-free to prevent from crumbling or yellowin An uncut sheet of Cover paper measures 20 x 26 inches: If 500 sheets of Cover paper weigh 65 lbs, then a ream of this paper trimmed to tabloid size would be marked as 65lb. Other terms to know: Standard. Typically printer paper; Usually has a weight of 20 - 28 lbs. Used a lot for: company letterheads, business forms, stationery; Cardstock / Cove

Basis Weight 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 the US system, the weight is specified in pounds, and the sheet count of a paper ream is usually 500 sheets. However, the mass specified is not the mass of the retail ream of paper ream. A quantity of paper, 20 quires.Abbreviation, rm. Well into the 20th century a ream of writing paper contained 480 sheets and a ream of printing paper was 500 sheets, while suppliers of printers and publishers used a ream of 516 sheets. Today the standard ream of all types of paper is 500 sheets. One sometimes sees it stated that 1 printer's ream = 21½ quires.¹ If so, these are. weights of papers. Paper in the United States is categorized by its basis weight. This measure of weight is expressed in terms of pounds. The basis weight is the weight of 500 sheets (one ream) of the paper in its basic or parent size. As different weights and types of paper are manufactured in different sized sheets, this makes it particularly. 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). Basic size is used to determine basis weight as illustrated in the following examples: One ream (500 sheets) of 80 lb cover, cut to its basic size (20 x 26 in.) = 80 l About Paper, standard; 1 cubic meter of Paper, standard weighs 1 201 kilograms [kg] 1 cubic foot of Paper, standard weighs 74.97598 pounds [lbs] Paper, standard weighs 1.201 gram per cubic centimeter or 1 201 kilogram per cubic meter, i.e. density of paper, standard is equal to 1 201 kg/m³.In Imperial or US customary measurement system, the density is equal to 74.976 pound per cubic foot [lb.

Ream Weight Calculator. Pages Per Inch Calculator. MSI / MSF Calculator. Equivalent Weight Calculator. Linear Footage Calculator. Basis Weight Calculator. M-Weight Weight of a roll of paper calculator. UNITS CONVERSIONS Mils / Micron converter. Length Conversion Calculator. Area Conversion Calculator. Typographic unit converter They range from 0.012 to 0.078 of an inch with corresponding ream weights of 120 to 775 pounds (22 x 28-500). Their use is for calendar backs, signs, and window displays. Blasting Paper Paper Help Guide, understanding the differences in paper weights. Here's a Quick list of paper weights including grammage (GSM). GSM is a consistent number for papers, running smaller to larger regardless of paper basis weight Printing A ream of 17-in. by 22-in. paper weighs 16.0 lb. Find the weight of a ream of 19-in. by 24-in. sheets of the same density of paper

The pound per ream is a reference to what a ream of 500 sheets of paper would weigh; artists don't typically purchase 300 pounds of paper at a given time. In general, paper less than 356 gsm needs to be stretched before use to prevent it buckling or warping; paper under 190 gsm is a student grade that is too thin for anything but practice The basis weight of paper stated in metric terms of grams per square meter and expressed as g/m 2. Thus a sheet of paper 17 x 22 with a basis weight of 20 lbs. Pile of paper is ream marked by the insertion of small slips of paper or ream markers at intervals of every 500 sheets The weight of 1,000 sheets (two reams) of paper. Basis Weight: The weight of a ream, measured in pounds. The Basis Weight (also known as Ream Weight) is the weight of 500 sheets of the standard sheet size for a particular grade. The standard sheet size varies by grade. For example, text weight papers have a standard size of 25 x 38 (950 sq. Sheet weight in kg: A2 B2. In the case of delivery by courier to the weight given in the tables the weight of packaging should be added. Approximately 0.5 kg should be sdded for every 30 kg of finished product. For parcels less than 30 kg about 0.2 - 0.5 kg should be added for each parcel

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 The paper wrapping around the ream is thin, and provides little protection to the paper inside. Both ends of the paper wrapping had partially burst, and the corners of the ream were damaged. This means that most of the 500 sheets in this ream will be dented or rippled, and would not be suitable for business use

The density of paper is expressed by basis weight. Basis weight is the weight in pounds of 500 sheets of the paper at a standard sheet size, which in the case of book papers is 25″ x 38″. For uncoated book papers, 50-lb., 55-lb., and 60-lb. are typical basis weights. Common coated stock basis weights are 70-lb., 80-lb., and 100-lb What Does a Paper's Weight Mean? Paper is measured in pounds per 500 sheets (one Ream of paper) of a standard size of sheet based on the group or category of papers the grade. The different types of grades are Bond, Book, Text, Cover etc. Each group of the grade of paper is assigned a standard size that all weights are referred to Basis Weight the weight of a ream of paper in the Basic Size for that grade (e.g. 500 sheets of Sub. 20 Bond paper in its basic size, 17x22 in., would weigh 20 lb.) See also: Substance. Sometimes the same paper is assigned two basis weights, e.g. 24/60, meaning the same paper is sold in two different basis sizes Basis weight refers to the weight of 500 sheets (a ream) of card stock at its basic size. It's expressed in pounds, and varies depending on the grade of that particular stock. For example, a basis weight of 80 means that a 500-sheet stack of that paper grade at its basic size weighs 80 pounds