A small coffee at Dunkin’ isn’t the same size as a small at Starbucks. And if you’ve ever walked up to the counter, glanced at the menu, and thought — “Wait, how big is a medium here, exactly?” — you’re definitely not alone.
Dunkin’ keeps its cup size names simple (small, medium, large, extra-large), but the actual ounces behind those names change depending on whether you’re ordering hot coffee, iced coffee, or a frozen drink. That’s where most of the confusion kicks in.
This guide breaks down every Dunkin’ cup size in ounces, covers how sizes differ across drink categories, and helps you figure out which size actually makes sense for your caffeine needs and your wallet.
How Dunkin’ Cup Sizes Work — The Basics
Unlike some coffee chains that use fancy Italian names for their sizes, Dunkin’ sticks with straightforward English. You’ve got four main options: Small, Medium, Large, and Extra-Large.
Simple enough, right? But here’s what trips people up — a “medium” hot coffee and a “medium” iced coffee don’t hold the same amount of liquid. The cups are different shapes, the ice takes up space, and the ounce counts shift accordingly.
Dunkin’ designs its cup sizes around the type of drink you’re ordering. Hot drinks come in slightly smaller cups because there’s no ice eating into your volume. Cold and frozen drinks use bigger cups to account for ice and blending. Once you understand this one quirk, the entire Dunkin’ cup size system clicks into place.
Dunkin’ Cup Sizes in Ounces — Hot Drinks
Most people visit Dunkin’ for hot coffee, so let’s start here. Whether you’re grabbing a classic hot coffee, a latte, a cappuccino, or a hot macchiato, these are the cup sizes you’ll see:
Small — 10 oz
Medium — 14 oz
Large — 20 oz
Extra-Large — 24 oz
The small is genuinely small — about the size of a standard coffee mug you’d have at home. If you’re someone who just wants a quick caffeine hit on your commute, it does the job. The medium bumps you up by four ounces, which is a noticeable difference when you’re sipping.
The large at 20 oz is where most regular Dunkin’ drinkers land. It’s big enough to last you through the morning without feeling like you’re lugging around a bucket. And the extra-large? That’s a full 24 ounces — basically three cups of coffee in one. Great for long drives. Maybe not so great if you’re caffeine-sensitive.
Quick Fact: Dunkin’s extra-large hot coffee contains roughly 400mg of caffeine, which is the FDA’s recommended daily maximum for most healthy adults. If you’re grabbing one of these, you might want to skip that energy drink later.
Dunkin’ Cup Sizes in Ounces — Iced Drinks
Here’s where the sizing jumps up. If you’re ordering an iced coffee, a cold brew, or an iced latte, Dunkin’ uses larger cups because ice takes up a significant chunk of the space:
Small — 16 oz
Medium — 24 oz
Large — 32 oz
Notice something? There’s no extra-large option for iced drinks. And the iced small (16 oz) is actually bigger than a hot medium (14 oz). That’s not an accident. Dunkin’ accounts for the ice displacement, so you’re still getting a reasonable amount of actual liquid.
The iced medium at 24 oz is the most popular iced size, and it’s the same total volume as a hot extra-large. But remember — a good portion of that 24 ounces is ice, not coffee. You’re probably getting around 16–18 oz of actual drink in there.
If you’re the kind of person who asks for “light ice,” you’ll get more coffee in the cup. Some Dunkin’ regulars swear by this trick, though the taste profile does change a bit since the drink won’t be quite as cold throughout.
Pro Tip: If you want the most bang for your buck on iced coffee, the large iced at 32 oz is a solid deal. Price-wise, the jump from medium to large is usually less than a dollar, but you’re getting eight extra ounces.
Dunkin’ Cup Sizes for Frozen Drinks
Frozen drinks — like Coolatta and frozen coffee — follow yet another size chart. These are blended drinks, and the consistency is thicker, so the sizes sit between hot and iced:
Small — 16 oz
Medium — 24 oz
Large — 32 oz
Yes, these numbers match the iced drink sizes exactly. The difference is the texture. Frozen drinks are denser because they’re blended with ice rather than just poured over it. So a 24 oz frozen coffee feels (and lasts) longer than a 24 oz iced coffee.
Frozen drinks at Dunkin’ tend to be more dessert-like, with higher sugar content. If you’re watching calories, the size you pick here matters quite a bit — a large frozen coffee with cream and sugar can push past 800 calories easily. Just something to keep in mind. If you’re looking for ways to cut down on sugar at Dunkin’, you might want to check out sugar-free Dunkin’ flavor options that pair well with any size.
Dunkin’ Espresso Drink Sizes
Espresso-based drinks at Dunkin’ — your lattes, cappuccinos, Americanos, and macchiatos — follow the hot drink sizing when served hot and the iced drink sizing when served cold. But the espresso shot count changes with size, which is what really affects your caffeine intake:
For hot espresso drinks, a small gets one shot, a medium gets two, and a large gets three. Extra-large (if available for that drink) usually gets three as well. For iced versions, a small typically gets two shots, a medium gets three, and a large gets three to four.
This means the caffeine concentration actually decreases as you go bigger. A small hot latte has one shot of espresso in 10 oz of liquid — that’s a strong ratio. A large has three shots in 20 oz, so the coffee flavor is slightly more diluted by milk. Neither is better or worse; it just depends on whether you prefer a bolder or smoother taste.
Dunkin’ Cup Sizes Chart — All Drinks at a Glance
Here’s a clean reference you can screenshot or bookmark:
Hot Drinks (Coffee, Latte, Cappuccino, Tea):
Small = 10 oz | Medium = 14 oz | Large = 20 oz | XL = 24 oz
Iced Drinks (Iced Coffee, Cold Brew, Iced Latte):
Small = 16 oz | Medium = 24 oz | Large = 32 oz
Frozen Drinks (Coolatta, Frozen Coffee):
Small = 16 oz | Medium = 24 oz | Large = 32 oz
Espresso Shots by Size (Hot):
Small = 1 shot | Medium = 2 shots | Large = 3 shots
Espresso Shots by Size (Iced):
Small = 2 shots | Medium = 3 shots | Large = 3–4 shots
This Dunkin’ coffee sizes chart covers the standard menu as of 2025. Specialty or limited-time drinks may occasionally follow slightly different sizing, but these numbers hold true for the core menu across most U.S. locations.
How Dunkin’ Sizes Compare to Starbucks
This is one of the most common questions people have, so let’s clear it up. Starbucks uses its own naming system — Tall, Grande, Venti, Trenta — while Dunkin’ sticks with plain English. Here’s how they stack up for hot coffee:
Dunkin’ Small (10 oz) is slightly smaller than a Starbucks Tall (12 oz). Dunkin’ Medium (14 oz) sits right between Starbucks Tall and Grande (16 oz). Dunkin’ Large (20 oz) matches the Starbucks Venti perfectly. And Dunkin’s Extra-Large (24 oz) has no direct Starbucks hot equivalent — Starbucks caps hot drinks at Venti (20 oz).
For iced drinks, the comparison shifts. Dunkin’s iced Large at 32 oz goes head-to-head with Starbucks’ Trenta (30 oz), and Dunkin’ actually gives you two more ounces.
Price-wise, Dunkin’ runs cheaper across almost every size compared to Starbucks. A large hot coffee at Dunkin’ typically costs $2.50–$3.50 depending on location, while a Venti at Starbucks usually hits $3.00–$4.00+. If you’re ordering daily, that difference adds up to hundreds of dollars a year.
Curious about what Starbucks offers beyond coffee? Here’s a look at their non-coffee drink options and a guide to their drinks ranked by caffeine content.
Which Dunkin’ Cup Size Gives You the Best Value?
Let’s talk money, because that’s a real factor for anyone buying coffee regularly.
Dunkin’ prices its drinks so that the price-per-ounce drops as you go bigger. A small hot coffee might cost you $1.89, while a large costs $2.59. You’re paying about $0.19 per ounce for the small versus roughly $0.13 per ounce for the large. The extra-large pushes that even lower.
Does that mean you should always order the biggest size? Not necessarily. If you’re going to drink the whole thing — yes, the larger sizes are a better deal. But if you order an extra-large and only finish half before it goes cold, you’re not really saving anything.
Here’s a smarter approach. Think about your actual consumption patterns. Do you nurse your coffee for two hours? Iced or cold brew stays drinkable longer, so a larger size makes sense. Do you gulp it down in 15 minutes? Even a small will do the job, and you won’t overspend.
For iced coffee fans specifically, the medium-to-large jump is the sweet spot for value. You get eight extra ounces for usually less than a dollar more. That’s the best value gap on Dunkin’s entire iced menu.
Dunkin’ Refreshers — Size and Caffeine Breakdown
Dunkin’ Refreshers have become hugely popular, especially among people who want something fruity with a mild caffeine kick. They follow the iced drink sizing — Small (16 oz), Medium (24 oz), and Large (32 oz).
But here’s what a lot of people don’t realize: Refreshers contain green tea extract, which means they do have caffeine. It’s less than coffee, but it’s not zero. A small Dunkin’ Refresher packs about 66mg of caffeine, while a large gets you close to 132mg. That’s roughly the same as a small hot coffee.
If you’ve been treating Refreshers as a caffeine-free alternative, you’ll want to know the full picture. We’ve got a detailed breakdown of caffeine in Dunkin’ Refreshers that covers every flavor.
How to Pick the Right Dunkin’ Size for You
Choosing a cup size sounds trivial, but when you’re spending $3–$5 per visit and going three to five times a week, it’s actually a meaningful decision. Here are some practical ways to think about it.
Consider your caffeine tolerance. If you’re sensitive to caffeine, stick with a small hot coffee (around 150mg of caffeine) or a medium iced coffee. Jumping straight to an extra-large hot (approximately 400mg) can leave you jittery, anxious, or struggling to sleep that night. Your body weight, age, and whether you’ve eaten also play into how caffeine hits you.
Match the size to the occasion. Grabbing something on a quick break? Small is plenty. Settling in for a long work session or a road trip? Large or extra-large makes sense. There’s no reason to default to the same size every time.
Factor in add-ons. Cream, sugar, flavor shots, and flavor swirls all add calories. The bigger the cup, the more pumps of syrup or swirls of cream the barista adds (unless you customize). A large coffee with cream and sugar isn’t the same nutritional profile as a large black coffee. If you’re trying to keep things lighter, either go smaller or ask for fewer pumps.
If you’re exploring the full Dunkin’ menu and want ideas beyond your usual order, our best Dunkin’ Donuts drinks guide covers the fan favorites worth trying.
Do Dunkin’ Cup Sizes Vary by Location?
Short answer — they shouldn’t, but occasionally they do.
Dunkin’ is a franchise operation, which means individual franchise owners run their own locations. Corporate Dunkin’ (now part of Inspire Brands) sets the standard cup sizes, and the vast majority of locations follow them precisely. The cups are manufactured to spec, so a medium is a medium whether you’re in Boston or Dallas.
That said, there are small exceptions. Some airport or stadium locations use slightly different cups due to supplier constraints. International Dunkin’ locations (like in South Korea, Saudi Arabia, or Europe) may have entirely different sizing systems based on local preferences and regulations.
For the standard U.S. Dunkin’ experience, the sizes listed in this guide are what you’ll encounter 99% of the time.
The Extra-Large Debate: Is Dunkin’s XL Worth It?
The extra-large hot coffee at 24 oz is one of those love-it-or-leave-it menu items. Some people order it daily and can’t imagine going smaller. Others find it’s just too much coffee.
Let’s break it down practically. At 24 ounces, you’re drinking about three standard cups of coffee in one sitting. Caffeine-wise, that’s in the ballpark of 400mg — the FDA’s recommended daily ceiling. If this is your only caffeinated drink all day, you’re fine. If you’re also drinking a Monster Energy or a Red Bull later, you’re likely overshooting your caffeine intake by a significant margin.
Temperature is another factor. A 24 oz cup of hot coffee takes a while to drink. By the time you’re halfway through, it’s lukewarm. By the last quarter, it might be room temperature. If that bothers you, a large (20 oz) might be the better call — you finish it while it’s still hot.
Value-wise, the XL is the cheapest per ounce on the hot menu. If you genuinely drink it all and you don’t mind the last few sips being cooler, it’s hard to beat the price.
How Dunkin’s Sizing Compares to McDonald’s
Since Dunkin’ and McDonald’s compete heavily in the affordable coffee space, this comparison comes up a lot. McDonald’s (McCafé) uses Small, Medium, and Large — same naming convention as Dunkin’.
McDonald’s small hot coffee is 12 oz (compared to Dunkin’s 10 oz). McDonald’s medium is 16 oz (vs. Dunkin’s 14 oz). McDonald’s large is 21 oz (vs. Dunkin’s 20 oz). So across the board, McDonald’s cups are marginally bigger — by about 1–2 ounces per size.
But Dunkin’ offers an extra-large at 24 oz, which McDonald’s doesn’t match. And if you’re curious about exactly how McDonald’s sizing works, we’ve got a full breakdown of McDonald’s large coffee in ounces.
Price-wise, the two are remarkably similar. The real difference comes down to coffee taste and personal preference. Dunkin’ tends to be slightly bolder, while McCafé goes for a smoother, lighter roast profile.
How Much Caffeine Per Cup Size at Dunkin’?
Size and caffeine go hand-in-hand, but the relationship isn’t always perfectly linear. Here’s a rough guide for Dunkin’s original blend hot coffee:
Small (10 oz): ~150mg caffeine
Medium (14 oz): ~210mg caffeine
Large (20 oz): ~300mg caffeine
Extra-Large (24 oz): ~400mg caffeine
For iced coffee, the caffeine numbers are similar because the brewing method is the same — it’s just served over ice. A medium iced coffee (24 oz cup) contains roughly the same caffeine as a medium hot coffee (14 oz cup), because the extra volume is mostly ice, not extra coffee.
Espresso-based drinks follow a different logic entirely. Each espresso shot at Dunkin’ contains about 118mg of caffeine. So a small latte with one shot has 118mg, while a large with three shots has 354mg. The total caffeine depends on shot count, not cup volume.
Cold brew is the wild card. Dunkin’s cold brew is brewed with a higher coffee-to-water ratio, so it packs more caffeine per ounce than regular iced coffee. A medium cold brew can have around 260mg of caffeine — noticeably more than a medium iced coffee.
FAQ Section
What are the Dunkin’ cup size names?
Dunkin’ uses four size names: Small, Medium, Large, and Extra-Large. Hot drinks come in all four sizes, while iced and frozen drinks are only available in Small, Medium, and Large. There are no Italian or specialty size names — Dunkin’ keeps it simple.
How many ounces is a Dunkin’ medium coffee?
A Dunkin’ medium hot coffee is 14 oz. A medium iced coffee is 24 oz. The difference exists because iced drinks need extra room for ice. If you’re comparing across brands, Dunkin’s medium hot (14 oz) sits between a Starbucks Tall (12 oz) and Grande (16 oz).
Is Dunkin’s large bigger than Starbucks Venti?
For hot drinks, they’re the same — both are 20 oz. For iced drinks, Dunkin’s large (32 oz) is actually bigger than Starbucks’ Venti Iced (24 oz) and even edges out the Starbucks Trenta (30 oz) by two ounces. Dunkin’ gives you the most iced coffee per cup of any major chain.
Does Dunkin’ have an extra-large iced coffee?
No. Dunkin’s iced drinks max out at Large (32 oz). The Extra-Large option is only available for hot drinks. Since the iced large is already 32 ounces — a full quart — an extra-large iced option would be impractical for most cup holders and hand sizes.
How many shots of espresso are in a large Dunkin’ latte?
A large hot latte at Dunkin’ contains three shots of espresso. A large iced latte also contains three to four shots, depending on the location. Each shot has about 118mg of caffeine, putting a large latte in the 354–472mg range.
Final Thoughts
Dunkin’ keeps its cup size system refreshingly straightforward — no secret menu size names, no confusing Italian terminology. Small, Medium, Large, Extra-Large. That’s it.
The key thing to remember is that hot and iced sizes aren’t interchangeable. A medium hot (14 oz) and a medium iced (24 oz) are very different amounts of liquid, even though they share the same name. Once that clicks, ordering becomes second nature.
If you’re a daily Dunkin’ customer, take a minute to think about whether your usual size is actually the right one. You might be spending more than you need to, or missing out on a better deal by sizing up. Either way, now you’ve got the exact numbers to make that call.
Next time you’re at the counter, you won’t have to guess. You’ll know exactly what you’re getting — down to the last ounce.