Starbucks vs Dunkin Sizes: Every Cup in Ounces (2026 Chart)
Starbucks vs Dunkin sizes confuse almost everyone, because the same word means a different amount at each chain. At Dunkin', a Medium can be 14 or 24 fl oz depending on whether your drink is hot or iced, while Starbucks uses Tall, Grande and Venti. This guide turns every cup into fluid ounces so you know exactly what you're ordering.
Sizes come from Starbucks' published US cup sizes and Dunkin's US Nutrition Guide (updated September 21, 2026). Once you know your size, check the calories in our Starbucks drink calorie calculator or the Dunkin' drink calorie calculator.
Starbucks vs Dunkin sizes: the full ounce chart
Starbucks cups run from 8 to 30 fl oz and Dunkin' cups from 10 to 32 fl oz. Lining up Starbucks vs Dunkin' sizes by ounces shows which cups really match.
Cup size | Starbucks | Dunkin' |
8 fl oz | Short (hot only) | – |
10 fl oz | – | Small (hot) |
12 fl oz | Tall | – |
14 fl oz | – | Medium (hot) |
16 fl oz | Grande | Small (iced) |
20 fl oz | Venti (hot) | Large (hot) |
24 fl oz | Venti (iced) | Medium (iced), Extra Large (hot) |
30 fl oz | Trenta (select iced drinks) | – |
32 fl oz | – | Large (iced) |
Sources: Starbucks US cup sizes; Dunkin' US Nutrition Guide, updated 2026-09-21. Iced cup sizes include the ice. Short is for hot drinks only; Trenta is for select iced drinks only.
What are Starbucks cup sizes in ounces?
Starbucks has five sizes: Short (8 fl oz), Tall (12), Grande (16), Venti (20 hot or 24 iced) and Trenta (30). Venti is the only size that changes between hot and iced drinks.
• Short, 8 fl oz: hot drinks only.
• Tall, 12 fl oz: the smallest size on most menus.
• Grande, 16 fl oz: the size used for most nutrition comparisons.
• Venti, 20 fl oz hot or 24 fl oz iced: the iced cup is bigger to make room for ice.
• Trenta, 30 fl oz: select iced drinks only.
A hot Venti latte usually has the same 2 espresso shots as a Grande, while an iced Venti usually gets a 3rd. More on Starbucks names in Starbucks drink sizes explained.
What are Dunkin cup sizes in ounces?
Dunkin' is where most Starbucks vs Dunkin sizes confusion starts. Hot drinks come in Small (10 fl oz), Medium (14), Large (20) and Extra Large (24); iced drinks come in Small (16 fl oz), Medium (24) and Large (32).
So the same size name changes a lot: a Dunkin' Small is 10 fl oz hot but 16 fl oz iced. In Dunkin's nutrition guide, Extra Large appears for hot coffee only. See every size and milk in our Dunkin' hot coffee calories chart.
Is a Dunkin' Medium bigger than a Starbucks Grande?
It depends on the drink. A hot Dunkin' Medium (14 fl oz) is smaller than a Grande (16 fl oz), but an iced Dunkin' Medium (24 fl oz) is bigger.
An iced Medium holds 8 fl oz more than a Grande, which is 50% more cup. Remember that iced sizes include ice, so the extra space isn't all coffee. This is the single most common mix-up in Starbucks vs Dunkin' sizes.
Which sizes are the same at Starbucks and Dunkin'?
Three pairs match exactly: 16, 20 and 24 fl oz. These are the fairest pairs to use when you compare Starbucks vs Dunkin' sizes, calories or price.
• 16 fl oz: Starbucks Grande = Dunkin' Small iced.
• 20 fl oz: Starbucks Venti hot = Dunkin' Large hot.
• 24 fl oz: Starbucks Venti iced = Dunkin' Medium iced = Dunkin' Extra Large hot.
The biggest cup at either chain is the Dunkin' Large iced at 32 fl oz, 2 fl oz more than a Starbucks Trenta (30 fl oz).
How does cup size change calories?
Bigger cups usually mean more calories, because they hold more milk, cream and sweetener. Black coffee and cold brew are the exception: they stay at 5 calories in every size at both chains.
• Starbucks Caffè Latte, 2% milk: 150 calories (Tall), 190 (Grande), 250 (Venti).
• Dunkin' Iced Coffee with cream and sugar: 130 calories (Small), 190 (Medium), 260 (Large).
• Cold brew, black: 5 calories at every size at both chains.
That's why fair comparisons always match ounces first. See the drink-by-drink numbers in Starbucks vs Dunkin' calories at the same size, or every iced option in our Dunkin' iced coffee calories chart.
If you have diabetes, are pregnant or manage a health condition, talk to your doctor or a registered dietitian about how much sugar and caffeine suit you.
How do I order the same size at both chains?
Order by ounces, not by name. Once you know the matching pairs, switching between Starbucks vs Dunkin' sizes is easy.
1. Usually order a Grande? At Dunkin', ask for a Small iced (16 fl oz). For a hot drink, a Medium (14 fl oz) is closest.
2. Usually order a Venti hot? A Dunkin' Large hot is the same 20 fl oz.
3. Usually order a Venti iced? A Dunkin' Medium iced is the same 24 fl oz.
4. Usually order a Dunkin' Medium iced? At Starbucks, that's a Venti iced, not a Grande.
Bottom Line
Starbucks vs Dunkin sizes only line up when you count ounces: a Grande (16 fl oz) matches a Dunkin' Small iced, a Venti hot (20) matches a Dunkin' Large hot, and a Venti iced (24) matches a Dunkin' Medium iced. A hot Dunkin' Medium is smaller than a Grande; an iced one is bigger.
Check the calories for any size in the Starbucks calculator or the Dunkin' calculator.
Frequently asked questions
Is a Dunkin' Medium bigger than a Starbucks Grande?
Only for iced drinks. An iced Dunkin' Medium is 24 fl oz and a Grande is 16 fl oz. A hot Dunkin' Medium is 14 fl oz, so it's smaller than a Grande.
How many ounces is a Starbucks Grande?
A Starbucks Grande is 16 fl oz, hot or iced. That's the same size as a Dunkin' Small iced drink.
How many ounces is a Dunkin' Medium?
A Dunkin' Medium is 14 fl oz for hot drinks and 24 fl oz for iced drinks.
How many ounces is a Starbucks Venti?
A Starbucks Venti is 20 fl oz for hot drinks and 24 fl oz for iced drinks.
What is the biggest size at Starbucks and Dunkin'?
Dunkin's Large iced is the biggest at 32 fl oz. Starbucks' biggest is the Trenta at 30 fl oz, available for select iced drinks only.
Is a Dunkin' Small the same as a Starbucks Tall?
No. A Starbucks Tall is 12 fl oz. A Dunkin' Small is 10 fl oz hot or 16 fl oz iced, the same as a Starbucks Grande.
Do bigger sizes have more calories?
Usually, yes. A Starbucks Caffè Latte with 2% milk has 150 calories as a Tall, 190 as a Grande and 250 as a Venti. Black coffee and cold brew stay at 5 calories in every size.
