David has written hundreds of articles for newspapers, magazines and websites including American Express, Samsung, Re/Max and the New York Times'. He is currently the owner of Mad Hat Labs, a web design and media consultancy business. Solution: Apply formula: Substance in gsm (Weight of reel in kgs 100000)/(Length of paper on meter reel width in cms) Substance in gsm (25100000)/ (30 15) Substance in gsm 2500000/450 5555.555555555556 Substance in gsm 5555. ZX Printer: The Thickness of Printing Paper ListĪ published author, David Weedmark has advised businesses on technology, media and marketing for more than 20 years and used to teach computer science at Algonquin College.The GSM of card stock, for example, can't be converted to MM by comparing it to bond paper. It is nearly impossible to compare measurements of different types of paper accurately. There is no simple relationship between this measure and the thickness of the paper - which would be measured in microns. gsm, or grams per square metre, are a measure of the mass of a unit area of paper (usually). The ratio of 60 to 180 GSM is 1:3, but the ratio of 0.08 to 0.19 mm is significantly different at 1:2.375. How do you convert 350 gsm to micron You cannot. 120 grams per square meter paper conversion translates to 80 lb stock. gsm to lbs: 120 gsm text stock divided by 1.5 80 lbs. However 90 gsm is not standard, so the closest paper conversion is 100 grams per square meter stock. lbs to gsm: 60 lb text stock multiplied by 1.5 90 gsm. If you do the math, you'll see that these numbers don't correspond exactly. Be aware that the paper weight calculation may be approximate. In short, the weight of the paper doesn't always tell you its thickness, or vice versa.Īs an example, each sheet of 60 GSM bond paper from one supplier may be 0.08 mm thick, while 180 GSM bond paper from the same supplier is 0.19 mm thick. This could be due to different recipes being used to manufacture the paper, different types of wood or other materials used to bind the fibers, or even differences in humidity. Keep in mind, however, that the calculations will not be accurate. If you can't access these tables, you can approximate the differences yourself, provided you are looking at paper of the same type and quality. This is the only way you can accurately compare one paper's measurements to another. If you do the math, you'll see that these numbers don't correspond exactly. As an example, each sheet of 60 GSM bond paper from one supplier may be 0.08 mm thick, while 180 GSM bond paper from the same supplier is 0.19 mm thick. Most suppliers should be able to give you a table showing how their paper compares in GSM and MM, and sometimes even its basis weight. In short, the weight of the paper doesn't always tell you its thickness, or vice versa.
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