Book
xkcd: volume 0
xkcd: volume 0 is the first xkcd book! It features selections from the first 600 comics, including various author and fan favorites. It was lovingly assembled from high-resolution original scans of the comics (the mouseover text is discreetly included), and features a lot of doodles, notes, and puzzles in the margins.
The book is published by BreadPig, a company founded by my friend Alexis, and their portion of the profits will go to build a school in Laos through the charity Room to Read.
Prints
Signed Prints
These are high-quality prints of a number of strips, made from the original high-resolution scans (not the smaller web versions). Sizes vary to suit each comic and are all hand-signed.
Note on price: we get a lot of emails asking about donations. We like to send people something tangible for their money, so we're offering these prints Radiohead-style -- you can choose what to pay for them (above the default $15). If you want to donate money to the site but don't want a bunch of merch, just order a print or two and set your own price. Thanks!
Posters
Sale! Get 1/3 off each if you order 3 or more posters!
Money Poster
This is the poster version of comic #980, which is a guide to money. It started as a project to understand taxes and government spending, and turned into a rather extensive research project. With upwards of 200 sources and 150,000 tiny boxes, it's best appreciated in poster form. The 36"x24" high-quality poster print allows you to stand back and, all at once, take in the entire world economy.
If you want an even bigger version, you can also buy the extra large 72"x48" version. This version provides a six-foot-wide mural view of the chart, allowing you to clearly read even the finest details.
Online Communities Map - 2010
This is the the new version of the Map of Online Communities, updated for 2010. It's a nice, large poster at 26x30 inches.
Gravity Wells Poster
This poster is based on the high-resolution original of comic #681. It shows the depths1 of various gravity wells in the solar system. The poster version has some additional diagrams showing the scale of the gravity wells of the solar system, Milky Way, and Great Attractor. It is about 35"x15".
1(The depth of the well corresponds to the energy it would take to escape the from the planet; it is the height you would have to climb upward in constant Earth surface gravity to spend the same amount of energy as it would take to escape the given planet completely.)
Movie Narrative Charts Poster
This is the poster version of Comic #657, made from the high-resolution originals). It shows the interactions between characters over time in various movie epics. It's 34"x22", and if you want only one particular chart, you can easily cut it out :) At the suggestion of reader Gary McDougall, I added a line for Luke's hand (which separates from him on Cloud City), but did not include the Extended Universe canon story of Thrawn's recovery of the hand and subsequent cloning of Luke. Angry letters about this decision should be directed to spam@xkcd.com.
Height Poster
By popular request, we're offering a poster print of comic #482, 'Height'. It is 36 inches tall and 9.5 inches wide (we thought about a 46 billion light-year version, but it would be too hard to mail).
Online Communities Map Circa 2007
A poster of the 2007 version of the Online Communities Map. It's 25"x24" (fairly large), full-page, and you can read all the little city labels. It also includes other little other points of interest mapped exclusively for the poster!
Map of the Internet (Poster Print)
This is (at last) a poster print of the Map of the Internet (comic #195), created from the original high-resolution artwork and updated with a few small corrections (such as the inclusion of the 172.16.0.0/12 subnet specified by RFC 1918). Posters ship separately from shirts but they can be mixed with shirts in a single order without extra shipping costs. The poster is 16x20" on mildly glossy medium-weight poster paper. We are not responsible if you get lost and eaten by internet wolves while using this map.
Mug
Mousepad
Mousepad
There have been a lot of requests for, of all things, an xkcd mousepad. So we made one out of an illustration from the back cover of the xkcd book, featuring various xkcd characters doing battle with the red spiders (which are not forgotten, by the way). It's 8.125"x7", with a vinyl surface on a 1/16" base. Other than that, I'm not sure what other specs to include here. By my calculations, it could probably bring down a fleeing human target if fired faster than about 400 mph, based on giving it the momentum of a fastball and about sixteen times the K.E.
Clothing
Collatz Conjecture
This shirt is based on the chains of numbers that make up the fascinating Collatz conjecture (also known as 'hailstone numbers'). The conjecture states that if you take any number, and if it's even you divide it by two and if it's odd multiply it by three and add one, and you repeat this process indefinitely, no matter what number you start with, you will always end up at 1. The tree in the shirt shows the route that various numbers take to reach 1.
The conjecture remains stubbornly unproven, and written in small letters at the base of the tree in the shirt is a quote about the conjecture attributed to Paul Erdos - "Mathematics is not yet ready for such problems."
Self-Descriptive Shirt
The Self-Descriptive Shirt, loosely based on comic #688, has on it a set of charts and graphs precisely describing itself. On the front is a white pie chart showing what fraction of the shirt's area is white, and on the back are a series of black and white charts and figures describing in more detail the size and location of black and white areas of the shirt.
Since the graphs are describing their own content, it had to be designed to avoid any contradictions, and since a change to any one graph alters all the others, it took a lot of careful measurement and fine-tuning to precisely calibrate the size of each chart element, and the design was adjusted for each size of shirt to ensure accuracy.
In case anyone was wondering, Douglas Hofstadter's birthday is February 15th.
This item is a preorder that should ship in time for Christmas.
Centrifuge
Centrifuges: they're what separate the men from the boys. They can also separate out the constituent elements of each group by density, allowing you to discard the useless organic slop and keep the valuable heavier metals. This is a good shirt for anyone who's been either a lab tech or a Bond villain, and as a bonus gives you a chance to start arguments by using the word "centrifugal" correctly.
QR Code Shirt
A shirt for meeting strangers who scan other strangers' shirts when they contain QR codes.
SysAdmin
This is the shirt of comic #705. It features the original comic on the front and a new illustration on the back. Wear it in battles protecting your 9s against the forces of darkness.
Raptor Polo - Female Cut
This is an extremely soft, combed, ringspun, Egyptian cotton red polo shirt with a small raptor silhouette embroidered in black over the left breast. It should be worn over the upper half of the body. If the raptor came to life, given its tiny size it would have a top speed of about half a mile per hour, so you could probably outrun it.
The female cut features a v-neck and no buttons.
Hat Guy Polo - Female Cut
This is an extremely soft, combed, ringspun, Egyptian cotton polo shirt with the guy with the hat embroidered over the left breast. It's appropriate for people who read webcomics at work, people who need something dressier than a t-shirt to wear to dinner, or anyone who has an opinion on popped collars.
The female cut features a v-neck and no buttons.
Flying Ferret Tank Top
This is a white ladies wide-strap tank top with a flying ferret on the front (see Comic #20), printed on a wide-strap contoured-fit Bella shirt.
Hat Guy Polo - Male Cut
This is an extremely soft, combed, ringspun, Egyptian cotton polo shirt with the guy with the hat embroidered over the left breast. It's appropriate for people who read webcomics at work, people who need something dressier than a t-shirt to wear to dinner, or anyone who has an opinion on popped collars.
Raptor Polo - Male Cut
This is an extremely soft, combed, ringspun, Egyptian cotton red polo shirt with a small raptor silhouette embroidered in black over the left breast. It should be worn over the upper half of the body. If the raptor came to life, given its tiny size it would have a top speed of about half a mile per hour, so you could probably outrun it.
xkcd tie
This is a silk tie with various xkcd characters woven into it. It adds +5 to your charisma.
Pro tip: if you wear nothing but this tie, you qualify as fully dressed for the purposes of all office dress codes.
Woodpecker
This is a white t-shirt with the woodpecker from comic #614 in silhouette above the left breast.
Tech Support
This is the much-requested t-shirt featuring the flowchart from comic #627 on the front. Appropriate for nearly all tech support situations.
Correlation
This is the t-shirt of comic #552. It looks good on you with certainty p>0.95 (although don't push your luck by asking for certainty to a third standard deviation).
Linux Cheat Shirt
This is a shirt with a Linux cheat sheet printed upside-down, so you can glance down at it while hacking. Aimed at the non-guru, it's mainly an overview of useful programs and in some cases handy arguments, and includes a guide to regular expressions.
XKCD Hoodie
You can now order the first xkcd hoodie! It's a navy blue Gildan zippered hoodie and it sports an xkcd logo on the left breast.
Compiling
Based on the Compiling comic, this shirt increases your programming and swordfighting skills to 18.
Stand Back (Science)
For those of you who like being heroic but don't necessarily know or like regular expressions, here is an awesome variant on the theme of Comic #208. It pretty much speaks for itself. Hooray for science!
XKCD college-style shirt
This is a nice and quiet shirt you can wear anywhere. Anyone who doesn't know the webcomic will assume it's just a school they haven't heard of. If they ask, I suggest claiming it's the "Xtreme Kansas College of Dentistry" or "eXcellence Kriegsmarine College of Demolitions".
Regular Expressions Shirt
This is the much-requested shirt based on Comic #208. It warns everyone that you are not to be trifled with, that you have the situation well in hand, and that you can fix everything with a long jumble of indecipherable characters. (The expression on the front between the slashes is restrictive, but don't be greedy*?) On the back there is a hacker hero swinging in to save the day.
Useless
This shirt is based on Comic #55. It's perfect for the nerd who wants to show their sentimental side, or a helpless romantic who wants to show they sometimes enjoy the geeky approach to life. The text reads "my normal approach is useless here".
Science
Science: We finally figured out that you could separate
fact from superstition by a completely radical method: observation.
You can try things, measure them, and see how they work! Bitches.
The babydoll shirt is a slightly lighter green. The graph on the back of the shirt is data from the COBE mission,
which looked at the background microwave glow of the universe and found that it fit perfectly with the idea that the universe
used to be really hot everywhere. This strongly reinforced the Big Bang theory and was
one of the most dramatic examples of an experiment agreeing with a theory in history --
the data points fit perfectly, with error bars too small to draw on the graph.
It's one of the most triumphant scientific results in history.
No Raptors
Say no to velociraptors (and all other members of the dromaeosaurid family). By wearing this shirt, you make your position clear: you do NOT want to be hunted down and eaten by raptors.
Sudo
This is the shirt of Comic #149, which is so far the most widely-distributed comic I've ever done. It was spotted on the walls at Amazon headquarters and on some of the bigger blags. And now, as per your many email requests, here it is on a shirt!
Witty
For all the new readers who didn't get a chance to order one last time, the Witty shirt is back for a second run! It reads "Maybe if this shirt is witty enough, someone will finally love me.", taken from comic #23. A good hobby is wearing it to the mall and standing next to to people wearing those snarky Hot Topic t-shirts, but it is funny and appropriate for all occasions! It is also a comfortable shirt which will serve you well and will help make you the right kind of friends! A good addition to your arsenal of apparel.
Just Shy
I want there to be a way to say you're part of that secret club of people who it's all right to smile at on the metro, something that makes okay those random conversations in a bookstore, something that helps shy people make that secret connection that's nothing more than finding out that someone else is wandering through this world with the same hopes and uncertainties as you.
Stickers
Citation Needed Sticker
With these stickers, you can append a Wikipedia-style [citation needed] to dubious printed statements encountered in real life. They're translucent and come in sheets containing a range of sizes, so they can be affixed to subway ads, product packaging, textbooks, or "free kittens!" fliers making obviously exaggerated claims about cuteness.
Each sheet is 5"x7" and contains 24 stickers.
Opinions Bumper Sticker
Engage fellow drivers and onlookers in meaningful dialogue with this sticker. Enter the conversation today!
Actual Size Stickers
This sticker pack contains 15 'Actual Size!' stickers, five each of 1", 2", and 3" stickers.
80% of public advertisements would be greatly improved by an 'actual size!' claim, from 8.5x11 "Regina Spektor Live In Concert!" flyers to ten-foot PS3 banners to airline ads in the subway with pictures of 747s. You know what to do.
The stickers are a matte finish that blends in pretty well with anything, and they are removable if necessary.
Switch and Button Stickers
This sticker pack contains one each of 12 different 2"x0.5" stickers for labeling unlabeled buttons and switches on car dashboards, computer cases, and anything else.
Every car dash has a few unlabeled buttons that look like they should do something cool, although they usually just turn out to control the emergency blinkers. So here are some removable labels for those buttons. There are five stickers for unlabeled buttons (EJECT, TRANSFORM, ABORT, SELF-DESTRUCT, and ARMAGEDDON), a couple pairs for unlabeled switches (CHAOS/ORDER, GOOD/BAD), and one XKCD sticker.
For those who remember this story from the Jargon File, yes, the sticker-pairs also include "MAGIC/MORE MAGIC" stickers for your favorite mysterious switch.
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