Choosing the right event badge size is about more than dimensions. The size you pick determines how much information fits, how readable attendee names are from across the room, and whether your badge holders and lanyards work seamlessly on event day.
Event badges typically come in five popular sizes: 4" x 6", 4" x 3", 3.5" x 5.5", 4.25" x 6", and CR80. Each is designed for different event types, branding needs, and attendee experiences. In this guide, we'll compare every size, show what information comfortably fits on each badge, and help you choose the best option before you place your order.
Choosing the wrong size can lead to crowded layouts, hard-to-read names, incompatible accessories, and frustrating check-in experiences. Choosing the right one means clear names, polished branding, and badges that look as good as your event feels. Get it right before you print, and your attendees will notice the difference from the moment they arrive.
Which event badge size is best for my event?
The most common event badge sizes are 4" x 6" for conferences, conventions, and trade shows, 4" x 3" for meetings and seminars, 3.5" x 5.5" for corporate events and summits, 4.25" x 6" for large conventions and expos, and CR80 for staff, exhibitor, and VIP credentials.
4" x 6" portrait is the most widely used size at conferences, and it is the one most planners default to for good reason: it holds a large name, a scannable QR code, and a usable back panel. The sizes on either side of it trade room for cost or add room for scale.
| Size | Orientation | Best for | Holder |
|---|---|---|---|
| 4" x 6" | Portrait | Conferences, conventions, and trade shows. The most common choice. | 4" x 6" holder, or a slot-punched badge with no holder at all |
| 4" x 3" | Landscape | Meetings and seminars, where the badge only needs to name people. | 4" x 3" horizontal holder |
| 3.5" x 5.5" | Portrait | Corporate events and summits. A tall, elegant format with room to brand. | 3.5" x 5.5" portrait holder |
| 4.25" x 6" | Portrait | Large conventions and expos. Rigid plastic, with an optional adhesive holder for the name insert. | None. The badge is plastic and needs no sleeve. |
| CR80 (3.375" x 2.125") | Either | Staff, exhibitor, and VIP credentials. Durable and reusable. | Rigid CR80 holder |
Why does badge size matter?
Size sets a hard ceiling on four things, and each one shows up on event day.
- A name readable at distance. A 4" x 6" or 4.25" x 6" badge supports a first name at 36 point type. A 3.5" x 5.5" holds ~30, a 4" x 3" caps closer to 28, and CR80 is smaller still. The difference is whether someone can read a name before they reach you or only after. It matters most at large networking events and least at a seated meeting.
- Room for a QR code. A denser code encoding a vCard or an attendee profile needs physical space to stay scannable. The 6-inch-tall sizes give you a 1.25 to 1.5 inch code without stealing space from the name. On a smaller badge, the code and the name compete.
- A usable back panel. Agenda, floor plan, Wi-Fi password, emergency contact, sponsor logos. Badges flip constantly on a lanyard, so the back is real estate. A 4" x 6" or 4.25" x 6" back holds several of those; a 4" x 3" back holds one at most.
- Space sponsors will pay for. A sponsor logo on a 6-inch badge is visible across an aisle. On a CR80 credential it is a detail. If the badge is sponsorship inventory, size affects what you can charge.
None of this makes a bigger badge automatically better. A single-day internal meeting gains nothing from a 4.25" x 6" and pays for the extra stock. Match the size to what the badge actually has to do.
What is the difference between 4" x 6" and 4.25" x 6"?
A quarter inch of width, which sounds trivial and is not. The extra width on a 4.25" x 6" badge buys a wider name line, more room for a logo lockup across the top, and enough margin to run a color band down the side without crowding the content. It is the size to reach for at large conventions and expos where the badge is carrying attendee type, track, exhibitor status, and sponsor logos all at once.
The width is also the point. An optional 4.25" x 3.25" adhesive badge holder matches the card exactly edge to edge, and that holder takes a 4" x 3" name badge insert. You apply the clear adhesive pocket to the plastic card, then drop in the personalized 4" x 3" insert carrying the attendee's name and company. The branded card and the variable data get printed separately.
That separation is the real benefit. You print the branded 4.25" x 6" cards in bulk well ahead of the event, with the logo, sponsors, and full-color artwork, then print names on plain 4" x 3" stock whenever your data is final, including on site at registration. A last-minute registrant or a misspelled name costs one sheet of paper instead of a reprinted badge, and you are never sitting on a box of expensive cards waiting for the attendee list to settle.
The 4.25" x 6" is a plastic badge, so it needs no holder at all. The card is rigid enough to hang on its own, which removes a whole line item from the order and a whole step from the check-in table.
Where does 3.5" x 5.5" fit?
3.5" x 5.5" is a tall portrait badge, narrower than a 4" x 6" but nearly as long. It reads as more designed and less utilitarian, which is why it suits corporate events, summits, and anything where the badge is part of the brand experience rather than pure logistics.
You get a strong vertical layout: name at the top, title and company beneath, and space at the base for a logo or a color-coded band. What you give up relative to a 4" x 6" is width, so a very long company name or a wide logo lockup will feel tighter.
What size badge holder do I need?
Match the holder to the badge, and confirm holder inventory before ordering badges, not after. This is the single most common ordering mistake.
- 4" x 6" badges: take a 4" x 6" holder. Many also ship slot-punched, which means the lanyard clips directly through the badge and you skip the holder entirely.
- 4" x 3" badges: take a 4" x 3" horizontal holder.
- 3.5" x 5.5" badges: take a 3.5" x 5.5" portrait holder.
- 4.25" x 6" badges: need no holder. They are rigid plastic, with the option to add a 4.25" x 3.25" adhesive holder to the card face, which takes a printed 4" x 3" name badge.
- CR80 badges: take a rigid CR80 holder, the same one used for hotel key cards and employee IDs.
Our guide to badge holders covers the sleeve, rigid, and magnetic options for each size.
Should event badges be portrait or landscape?
Orientation largely follows size. 4" x 6", 4.25" x 6", and 3.5" x 5.5" are portrait. 4" x 3" is landscape. CR80 works either way depending on the holder.
Portrait suits vertical stacking: a large name at the top, company and title beneath, a QR code below, and sponsor logos at the base. It also hangs more stably on a lanyard and flips around backwards less often.
Landscape wins when the badge only has one job. A 4" x 3" landscape badge lets a name run wide across the full width, which is efficient use of a small surface. If your event is a single-day meeting and the badge only needs to say who someone is, landscape is a clean, cheap, sensible answer.
What information fits on each badge size?
| Element | On a 4.25" x 6" or 4" x 6" | On a 3.5" x 5.5" | On a 4" x 3" |
|---|---|---|---|
| First name | ~36pt, readable across a room | ~30pt | ~28pt, readable at conversational distance |
| Last name | Comfortable on its own line | Comfortable | Fits, but competes with the first name |
| Company and title | Both, clearly | Both, at a smaller size | One, usually company |
| QR code | 1.25 to 1.5 inch, no crowding | 1 to 1.25 inch | About 1 inch, and it competes for space |
| Back panel | Agenda, map, Wi-Fi, sponsors | Two of those | One item at most |
Drop to a CR80 credential and those numbers compress hard. You will fit a name, a photo or role band, and very little else. That is exactly right for staff and VIP credentials, where durability and access control matter more than information.
How big should a QR code be on a name badge?
Plan for a 1 inch square minimum, plus a clear white border. Reliability drops sharply below about 0.8 inches, especially under conference lighting. A QR code encoding a full vCard is denser and needs 1.25 inches or more to scan reliably.
The 6-inch-tall sizes accommodate a 1.25 to 1.5 inch code comfortably. That headroom is one of the strongest practical arguments for the larger formats at any event using lead retrieval or session scanning.
What size badge is best for a trade show?
4" x 6" portrait, or 4.25" x 6" if the badge is carrying exhibitor status and sponsor logos alongside the attendee's details. The reasons are the same as for conferences, plus one more: lead retrieval. Exhibitors scanning badges at a booth need a large, clean, high-contrast scanning target, and a 6-inch badge gives it to them. The format also supports a tear-off stub that an exhibitor keeps at the booth.
The one real trade-off is bulk. A 6-inch badge is a noticeable object hanging on someone's chest for eight hours. Pair it with a comfortable lanyard and a stock that is not unnecessarily heavy.
Quick recommendations by event type
- Conference, convention, or trade show: 4" x 6" portrait. The extra room and the usable back panel earn their keep.
- Large convention or expo: 4.25" x 6" portrait, when the badge has to carry attendee type, track, exhibitor status, and sponsors at once.
- Corporate event or summit: 3.5" x 5.5" portrait. A more designed format when the badge is part of the brand experience.
- Meeting or seminar: 4" x 3" landscape. Cheaper, lighter, entirely sufficient.
- Staff, exhibitor, or VIP credential: CR80 on plastic, durable and reusable.
Pick the size by what the badge has to carry, not by habit. Name legibility, QR space, back-panel use, and sponsor visibility all scale with the surface. Then match the holder to the size before you print, and the whole system works on event day.
Browse event badges Get a sample pack
Frequently asked questions
Which event badge size is best for my event?
The most common event badge sizes are 4" x 6" (conferences, conventions, and trade shows), 4" x 3" (meetings and seminars), 3.5" x 5.5" (corporate events and summits), 4.25" x 6" (large conventions and expos), and CR80 (staff, exhibitor, and VIP credentials). 4" x 6" is the most widely used because it holds a large name, a scannable QR code, and a full back panel.
What is the standard size for a conference name badge?
4" x 6" portrait is the standard for conferences and trade shows. Large conventions and expos often move up to 4.25" x 6" for the extra width, corporate events and summits use a 3.5" x 5.5" portrait format, and meetings and seminars often use a smaller 4" x 3" landscape badge. The larger the event, the more the badge has to carry.
What is the difference between 4" x 6" and 4.25" x 6" badges?
A quarter inch of width, plus a difference in material. The 4.25" x 6" is a rigid plastic badge that needs no holder, and its width matches an optional 4.25" x 3" adhesive badge holder exactly, which takes a 4" x 3" name insert. The 4" x 6" is typically paper or thermal stock used with a sleeve or slot-punched. The extra width also buys a wider name line and room for a logo lockup and sponsor band.
Can you print names separately from the badge itself?
Yes, and it is a common approach on 4.25" x 6" plastic badges. An optional 4.25" x 3" adhesive badge holder is applied to the card face and takes a 4" x 3" name insert. You print the branded plastic cards in bulk ahead of the event with your logo, sponsors, and artwork, then print names and companies on plain 4" x 3" stock once your attendee data is final, including on site at registration. A late registrant or a misspelled name costs one sheet of paper instead of a reprinted badge.
What size badge holder do I need?
Match the holder to the badge: a 4" x 6" badge takes a 4" x 6" holder, a 4" x 3" badge takes a 4" x 3" horizontal holder, and a 3.5" x 5.5" badge takes a portrait holder of the same size. A 4.25" x 6" badge needs no holder at all, since it is rigid plastic. Many 4" x 6" badges also ship slot-punched, which lets the lanyard clip directly through the badge. Confirm holder inventory before ordering badges, not after.
Should event badges be portrait or landscape?
Orientation follows size. 4" x 6", 4.25" x 6", and 3.5" x 5.5" badges are portrait, which suits vertical stacking: a large name at the top, company and title beneath, a QR code below, and sponsor logos at the base. Portrait also hangs more stably on a lanyard. 4" x 3" badges are landscape, which lets a name run wide across a smaller surface.
How big should a QR code be on a name badge?
Plan for a 1 inch square minimum plus a clear white border. Reliability drops sharply below about 0.8 inches, especially under conference lighting. A QR code encoding a full vCard is denser and needs 1.25 inches or more. The 6-inch-tall badge sizes accommodate a 1.25 to 1.5 inch code without crowding the name.
What size badge is best for a trade show?
4" x 6" portrait, or 4.25" x 6" when the badge carries exhibitor status and sponsor logos alongside attendee details. The size gives exhibitors a large, clean scanning target for lead retrieval, holds sponsor and exhibitor logos at a visible scale, and can carry a tear-off stub that an exhibitor keeps at the booth.