Perfect Bound - Art board /Art carton / Artpaper and Plain Paper Uncoated Paper - Plain Paper / HVS / Office Paper / Copy Paper Below are tables for each stock type covering the commonly found weights within each Lb type and its Gsm equivalent :Ĭoated Paper - Semi Gloss Art Paper and Matte Artpaper Having given an explanation of paper weights used internationally and in the US this page covers conversions between weights and stock paper types used in the US and the weights used internationally. Because the same size sheet is always being weighed, GSM (grams per square meter) provides a more uniform scale to judge a paper’s weight and thickness. The metric measurement (sometimes called Grammage) is the actual weight of one sheet of media cut 1 x 1 meter square. Metric weight (GSM or G/m2 measurement that is nearly always displayed alongside the U.S. 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. 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. An uncut sheet of Bond paper is 17 x 22 inches, while an uncut sheet of Cover paper is 20 x 26 inches. The most common sizes, some of which you may recognize, are Bond, Text, Book, Cover, Index and Tag. The “Basis Weight” is defined as the weight of 500 sheets of paper in its basic unit uncut size, which means before being cut to Letter size or Legal size, the paper is weighed and categorized. For example, a sheet of 100lb Text paper is actually much thinner than an 80lb Cover stock. And higher values don’t always equate to heavier/thicker print media. Basis (not basic) Weights, are the most confusing, simply because the same paper can yield different values based on the “Basis Weight” applied while manufacturing the paper. Basis Weight (Bond, Book, Index, Cover, Tag, Points, Offset ), Metric weight (GSM or G/m2) and, often interchangeable, Points (an actual Caliper reading of the paper thickness). First, there are three common methods for specifying paper weight and thickness: U.S. Unfortunately, sorting through the various methods of labeling a paper’s weight is not always straightforward. Heavier media often conveys quality and provides durability. Paper weight is an important component to consider before made order for your artwork printing. It’s important to distinguish between the weight of the paper and the thickness, or calliper, of the sheet. The grammage affects the paper’s texture to the touch and its level of transparency, which will be lower if you choose a paper with a higher weight. It is measured in grams per square metre (gsm) or simply in grams (g) and is a way of distinguishing between the various types of paper on the market, along with some other characteristics, which we will look at shortly.įor example, photocopy paper (also known as ‘uncoated paper’) has a weight of between 60 gsm and 100 gsm, while paperboard has a weight ranging from 150 gsm up to 350 gsm.
The technical definition of weight, or gram, is “the weight of a sheet of paper with a surface area of one square metre” in other words, it represents the ratio between the weight of the paper and its area. Will it be held? Will it be abused in a wallet or purse? Will it be bound into a thick, hundred page catalog? Is it going to be folded? Choosing a paper weight means thinking about how your piece will be used. They feel great to the touch and are used for some stationery, formal invitations, artwork and important legal documents. There are also premium papers that are made with a high quality texture. Higher weight paper is usually more expensive. Lighter weight papers are ideal for brochures, envelopes, stationery and interior pages of catalogs. Higher weight papers are great for business cards, bottle-neckers, cards, tags and catalog covers. A higher weight will be sturdier, thicker and firmer. Paper options can be daunting: here's what you need to know to get started.Ī paper's weight is, more or less, a measure of its thickness. The paper type and weight can sometimes affect how you prepare your press ready files, especially related to folding and binding, so confirm your paper choice with your printer to make sure any considerations are accommodated.
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