BLOG · PLANNING · AUGUST 2026
How Much Conference Merch to Order: A Per-Attendee Formula
Ordering against registration is the fastest way to end a conference with boxes. Here is the formula we use to size merch runs — quantities, size curves, and day-by-day pacing.
Start with attendance, not registration
The first mistake is ordering against your registration number. Registered is not the same as attended, and attended is not the same as "walked past the merch table while it was staffed." Conference no-show rates typically run 10–25% for paid events and considerably higher for free ones. Order against registration and you finish the show with boxes.
The working figure is your expected on-site attendance, which for most conferences is registration minus a realistic no-show rate. Ask your registration platform what last year's actual badge-scan number was. That single data point is worth more than any formula in this article.
The per-attendee formula
Once you have expected attendance, the quantity depends entirely on how the merch is distributed. Three models, three very different numbers:
- Everyone gets one (bag stuffer or badge-pickup handout). Order 100–105% of expected attendance. You need near-complete coverage and a small buffer for staff, speakers, and the people who lose theirs.
- Live printing station, open to all attendees. Order 45–65% of expected attendance. Not everyone will stop, and that is fine — the ones who do are self-selecting into engagement. Multi-day conferences skew toward the higher end because attendees who missed it on day one come back on day two.
- Premium or limited item (embroidered piece, custom jacket, hat bar). Order 25–40% of expected attendance. Scarcity is a feature here; a line at a limited station reads as desirable, not as a shortage.
Those bands assume a staffed, visible location. A station tucked behind the sponsor hall pulls dramatically lower, which is a placement problem rather than a quantity problem — fix the placement rather than cutting the order.
Size curves are where orders actually go wrong
Total quantity is the easy part. Getting the size distribution wrong is what leaves you with 200 XS shirts and zero XLs by hour two, which is a worse outcome than under-ordering overall, because the people who show up late get nothing while inventory sits in the box.
A serviceable general-audience apparel curve for US conference crowds:
- S — 10%
- M — 22%
- L — 28%
- XL — 24%
- 2XL — 12%
- 3XL — 4%
Adjust it against your actual audience. Developer and engineering conferences run larger than that curve. Fashion, wellness, and beauty industry events run smaller. Events with a majority-women audience shift the whole curve down roughly one size, and if you are offering both unisex and fitted cuts, split roughly 70/30 in favor of unisex and reforecast the fitted cuts a size smaller.
Hats and totes remove this problem entirely, which is a legitimate reason to pick them for an event where you have no attendance history to work from.
Multi-day pacing and the day-one problem
On a three-day conference, live printing demand is not evenly distributed. Day one runs hot — badges are new, the hall is fresh, and everyone is exploring. Day two settles. Day three is quiet until the final hour, when people remember they wanted a shirt.
A rough split is 45% / 35% / 20%. The practical consequence is that you must ration day one, or you will hand out your entire inventory to the first third of your audience. We normally hold back a defined day-three allocation in sealed boxes rather than trusting the crew to eyeball it in the moment — one of those decisions that seems overcautious until you have watched it go the other way.
The same logic applies to designs. If you are running a "design of the day," it concentrates repeat visits across all three days, which is usually the goal for sponsors paying for booth traffic.
Buffers, and when to break the formula
Add 5–10% on top of whatever number the formula gives you. That buffer absorbs staff and speaker pieces, misprints, the VIP whose assistant asks for four, and the press photographer who needs one to shoot. Misprint rates on a well-run station are low, but they are not zero, and a buffer is much cheaper than a reprint.
Break the formula upward when: the merch is the marketing (a sponsor whose entire booth investment is the giveaway), the item is unusually desirable, or the event has a strong social component that will drive word of mouth across the hall. Break it downward when the item is expensive per unit and the goal is qualified leads rather than reach — 200 excellent pieces given to the right 200 people beats 1,000 mediocre ones.
Frequently asked questions
Is it cheaper to over-order or to run out?
Over-order, in almost every case. Leftover blanks retain value — they become new-hire kits, follow-up mailers to leads, or inventory for your next event. Running out costs you the attendees who showed up and got nothing, which is the group most likely to remember the experience negatively. The exception is highly dated artwork (a specific year and city), which has no second life.
How much merch does a live printing station actually produce per hour?
A single screen-print station with a simple design menu runs roughly 60–100 pieces per hour. DTF is somewhat slower per piece but supports full color and personalization. Embroidery is far slower — think 15–25 pieces per hour — which is why it is priced and positioned as the premium option. Your hourly rate multiplied by staffed hours is a hard ceiling on quantity, and it is worth checking your order against it.
What do we do with leftovers?
Ship them back. Most of our conference clients deliberately over-order slightly and use the remainder for post-event lead follow-up, internal team gifting, or the next regional event. If the design is dated to a specific conference, keep the surplus small on purpose.
Get the number right for your conference
Send us your expected attendance, your show hours, and the distribution model you have in mind, and we will build the quantity, the size curve, and the station throughput into one plan — and tell you honestly if your target is not achievable in the hours you have. Merch Troop has run conference and event programs for Riot Games, Sony, Coca-Cola, and Hyundai. Call (562) 614-4800 or send your event details for a quote inside 24 hours.