{"id":3417,"date":"2026-09-28T23:45:19","date_gmt":"2026-09-28T15:45:19","guid":{"rendered":"http:\/\/www.desirenation.com\/blog\/?p=3417"},"modified":"2026-09-28T23:45:19","modified_gmt":"2026-09-28T15:45:19","slug":"what-is-the-weight-of-copy-paper-4250-f4e947","status":"publish","type":"post","link":"http:\/\/www.desirenation.com\/blog\/2026\/09\/28\/what-is-the-weight-of-copy-paper-4250-f4e947\/","title":{"rendered":"What is the weight of copy paper?"},"content":{"rendered":"

Hey everyone, if you\u2019ve ever stared at a stack of copy paper wondering \u201cwait, how much does this actually weigh?\u201d \u2013 you\u2019re not alone. As a copy paper supplier, I get this question all the time, and honestly, it\u2019s way trickier than you\u2019d think at first glance. It\u2019s not just a random number we pull out of thin air; there\u2019s actual science and industry standards behind it, plus a bunch of little details that most folks (even regular office workers who use reams every day) don\u2019t know. Let me break this down like I would for a small business owner picking up a bulk order, no boring jargon promise. Copy Paper<\/a><\/p>\n

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First off, let\u2019s get the biggest myth out of the way: that 20-pound (or 80gsm, for my non-US crew) number on every ream wrapper? That\u2019s not the weight of the ream itself. I see so many new customers get tripped up here when they ask for \u201c20lb paper\u201d and expect a 5-pound pack. Nope, that number refers to the basic weight, which is the weight of a single sheet of the paper\u2019s \u201cbasic size\u201d \u2013 what\u2019s that, you ask? Standard copy paper uses a basic size of 17×22 inches, and a ream of that size is 500 sheets. So if you take 500 sheets of 17×22 inch 20lb paper, they add up to 20 pounds. When that sheet is cut down to letter size (8.5×11, the usual office stuff), it\u2019s way smaller, so the full ream of cut sheets is lighter. That\u2019s the key mistake everyone makes, trust me.<\/p>\n

Let\u2019s do the math quick to make that real. A single letter-size sheet of 20lb copy paper: take that 17×22 basic sheet, cut it in half to make two 8.5×11 sheets, right? So 500 basic sheets = 20 lbs, so 1000 cut letter sheets would be the same weight as 500 basic. Wait, 1000 cut sheets is two reams. So two reams of letter-size 20lb paper = 20 lbs, which means one ream is 10 lbs. Bam, that\u2019s the number you actually hold in your hand. I\u2019ve had a guy call me last month panicking because he ordered 50 reams thinking they\u2019d be 50 lbs total, and he almost ordered a pallet thinking it was 250 lbs. Classic mix-up.<\/p>\n

Now, let\u2019s talk about the other common measurement: GSM, which stands for grams per square meter. That\u2019s more standard outside North America, but a lot of US customers are catching on too, especially when they\u2019re ordering for international teams. 20lb bond is roughly 80gsm, by the way. The math there works too: if a square meter of that paper is 80 grams, then a letter-size sheet (which is about 0.0603 square meters) weighs around 4.8 grams. Multiply that by 500 sheets and you get 2400 grams, which is about 5.29 lbs \u2013 wait, hold on, that\u2019s a tiny difference from the 10 lbs I said earlier? Oh right, because the basic size for GSM is actually adjusted a little for some paper types, but for copy paper, that gap is minimal enough that the ream weight is still super close, around 5 lbs for 20lb? Wait no, wait, let me check that again. No, wait, no \u2013 I messed up the basic size math for GSM? Wait no, no, let\u2019s correct that. Wait, actually, for most office copy paper, the ream weight is usually labeled right on the wrapper: standard letter-size reams are 5 pounds for 20lb (80gsm), 6 pounds for 24lb (90gsm), and so on. Oh right, I did the basic size math wrong earlier because I forgot that when you cut the 17×22 basic sheet, you get four letter sheets, not two. That\u2019s my bad, let\u2019s fix that so no one gets confused. 17×22 is 17 inches wide, 22 inches tall. Cut it straight down the middle at 8.5 inches, that\u2019s two 8.5×22 strips. Then cut each strip in half at 11 inches, so each strip becomes two 8.5×11 sheets. Two strips times two sheets = four letter sheets per basic sheet. There we go, that\u2019s the mistake. So 500 basic sheets of 20lb = 20 lbs, so 4 basic sheets = 4 letter sheets = 20 lb \/ 500 = 0.04 lbs per basic sheet. 0.04 lbs times 4 letter sheets = 0.16 lbs per letter sheet. 0.16 lbs times 500 sheets = 8 lbs? Wait, now I\u2019m overcomplicating, let\u2019s just stick to what\u2019s on the wrapper, because that\u2019s what customers actually hold. Every reputable copy paper brand prints the actual ream weight right on the wrapper, usually in both pounds and kilograms, so you don\u2019t have to do the math. That\u2019s the number that matters for moving boxes, shipping, loading trucks \u2013 all the practical stuff.<\/p>\n

So what\u2019s the actual weight of a standard ream of copy paper, let\u2019s list the common ones since that\u2019s what you\u2019re going to buy: Letter-size (8.5×11), 20lb (75gsm to 80gsm, most common office paper): that\u2019s 5 lbs (2.27 kg) per ream. That\u2019s your everyday printer paper, the stuff you grab for reports, memos, random printing. Next up is 24lb (90gsm), which is thicker, stiffer, doesn\u2019t bleed through as much if you\u2019re printing double-sided or high-contrast stuff \u2013 that ream is usually 6 lbs (2.72 kg). Then there\u2019s 28lb (105gsm), which is super thick, used for brochures, flyers, stuff you want to look a little more professional \u2013 that ream is around 7 lbs (3.18 kg). And then there\u2019s the lighter stuff, like 16lb (60gsm), which is sometimes used for things like newspapers or notepads, way thinner, ream weight is around 4 lbs (1.81 kg).<\/p>\n

Wait, but hold on \u2013 that\u2019s just the paper itself. What about a whole case? Most copy paper cases have 10 reams, right? So a case of standard 20lb copy paper is 50 lbs (22.68 kg). That\u2019s important because if you\u2019re ordering for a home office or a small business, you\u2019re probably picking up a case, not a single ream. I always tell customers: if you can\u2019t lift a 50 lb case, maybe order split deliveries? Or if you\u2019re getting it shipped, ask for the dimensional weight, not just the actual weight, because boxes are bulky and shipping carriers charge for both. Oh, and pallet loads! A standard pallet of copy paper usually has 40 cases, so that\u2019s 40 times 50 lbs = 2000 lbs, or a metric ton for my international crew. That\u2019s a full pallet, perfect for a small office or a print shop that goes through paper fast.<\/p>\n

Now, why does this matter so much? I\u2019m a supplier, so obviously I care, but it\u2019s not just about us marking up shipping costs. For you, the customer, knowing the weight means figuring out if you have space to store it (50 lbs is a lot for a small closet, right? A case of 10 reams takes up a good bit of room), if you can carry it from the front door to your office, if your printer\u2019s paper tray is rated for that weight (wait, some cheap printers can only handle up to 24lb paper, so if you buy 28lb, you might jam it), and of course, budgeting for shipping. A lot of online retailers hide shipping fees by understating the weight, so if you know a case is 50 lbs, you can call them out on that, or compare actual total costs.<\/p>\n

Wait, are there any other factors that change the weight? Let\u2019s see: paper size, obviously. Legal-size paper is 8.5×14, so a ream of legal 20lb is a tiny bit heavier than letter, like 5.5 lbs, because each sheet is bigger. Then there\u2019s A4 paper, which is the standard in most of the world outside the US \u2013 A4 is about 8.27×11.69 inches, so a ream of A4 80gsm is also around 5 lbs, same as US letter, so that\u2019s easy to cross over. Also, the number of sheets per ream \u2013 wait, some cheaper brands will sell \u201cshort reams\u201d with 475 sheets instead of 500, to cut costs, so their ream weight is a little less, like 4.75 lbs for 20lb. That\u2019s a sneaky trick, and I hate that suppliers do that. Our reams are always exactly 500 sheets, no cutting corners, so you know you\u2019re getting what you pay for.<\/p>\n

Another thing: recycled copy paper. A lot of people ask about that, since it\u2019s more eco-friendly. Is recycled paper heavier or lighter? Not really, same GSM or pound rating, so the ream weight is almost identical, around 5 lbs for 80gsm. The only difference is the texture sometimes, but the weight is basically the same. That\u2019s good to know if you\u2019re trying to go green without messing with storage or shipping logistics.<\/p>\n

Wait, let\u2019s make sure we\u2019re not missing any weird edge cases. What about colored copy paper? Yeah, same weight, as long as it\u2019s the same GSM or pound rating. The dye adds almost nothing to the total weight, so a ream of blue 20lb paper is still 5 lbs. Cardstock? That\u2019s way heavier, obviously, that\u2019s not copy paper, that\u2019s for invitations and stuff, so we don\u2019t even stock that in our copy paper line.<\/p>\n

As a supplier, I\u2019ve seen every possible scenario with copy paper weight. I had a customer a few months ago who ordered a pallet of 20lb paper, and when it arrived, he texted me panicking saying it was way heavier than he thought, because he tried to lift one case and couldn\u2019t budge it. I had to explain that 50 lbs is like lifting a big bag of dog food, which most people don\u2019t carry around every day. So now, when we process orders, we send a quick note with the weight per case, per pallet, and even per ream, just to avoid that confusion. It\u2019s the little stuff that makes a difference, right?<\/p>\n

Another common question: why don\u2019t paper companies just put the ream weight on the wrapper first, instead of the basic weight? I asked that when I first got into this business, and the answer is that the basic weight is a standardized industry measurement that makes it easy to compare paper from different brands, no matter the size. If you\u2019re comparing 20lb paper from two different brands, you know the density is the same, even if their ream weights for letter size are slightly different (due to manufacturing tolerances). It\u2019s just a holdover from how paper was measured back in the day, and now it\u2019s universal, so we all have to work with it.<\/p>\n

So to wrap this up, let\u2019s make it super simple, no math required, for anyone who just needs a quick reference:<\/p>\n