Short answer: two cups can both hold 8oz while being completely different shapes. A tall 8oz is narrow and upright with an 80mm rim. A squat 8oz is wider and shorter with an 89mm rim, the same diameter as a 12oz. They hold the same drink and they do not take the same lid. That difference is the single most common cause of ordering the wrong lids.
Same volume, different geometry
Volume is a product of diameter and height, so there is more than one way to build a cup that holds a given amount. Manufacturers make both because they suit different service styles.
- Tall 8oz. Narrower and taller. The standard takeaway profile in most of Australia, and what people usually picture as a small takeaway coffee.
- Squat 8oz. Wider and shorter, with a broader opening. Common in cafe and dine-in-adjacent service, and popular for flat whites and cappuccinos where a wider surface shows off latte art and gives a better ratio of crema to cup.
Why the shape genuinely matters
Drink presentation. A wider mouth gives more surface area, which is why squat cups suit milk-based coffee where the top of the drink is part of the product.
Stability. A shorter, wider cup has a lower centre of gravity, so it is less prone to tipping on a tray or a car cup holder. A tall cup is easier to hold in one hand.
Fit in service equipment. Under-machine clearance, cup dispensers and carriers are all sized around specific profiles. Changing profile can quietly break part of your workflow.
Print area shape. A squat cup gives you a short wide canvas, a tall cup a taller narrow one. The same artwork does not sit the same way on both, which matters if you are designing a wrap. See bleed, safe zone and wrap.
The lid trap
This is the practical consequence and it costs people money every year.
Lids fit by rim diameter, not by cup volume. Order lids by the number on the cup and you will eventually get it wrong.
| Cup | Rim diameter | Lid size |
|---|---|---|
| 6oz | 80mm | 80mm |
| 8oz (tall) | 80mm | 80mm |
| 8oz squat | 89mm | 89mm |
| 12oz | 89mm | 89mm |
| 16oz | 89mm | 89mm |
Read that table again on the 8oz rows. A squat 8oz takes the same lid as a 12oz, not the same lid as a tall 8oz. An order for “8oz lids” is ambiguous unless you say which profile you have.
The symptom of getting it wrong is a lid that will not seat, or one that sits on but pops off when the cup is moved, which usually presents as a leak. See why paper cups leak.
What we supply
Our printed cups are the tall profile in 6oz, 8oz, 12oz and 16oz. Our 8oz is a tall 8oz and takes an 80mm lid.
We stock lids in both diameters, so if you already run squat 8oz cups from another source, our 89mm lids will fit them. The lid sizing on our range is listed as 80mm for 6oz and 8oz, and 89mm for squat 8oz, 12oz and 16oz, precisely so this is unambiguous at the point of ordering. Options and pricing are in the paper cup lids guide.
How to check what you have
Do not go by the printed size. Do this instead:
- Measure the rim. Across the outside of the top curl, in millimetres. You are looking for roughly 80 or roughly 89.
- Compare against a 12oz. If your 8oz rim matches your 12oz rim, you have squat cups.
- Check an existing lid. If your current 8oz and 12oz share a lid, that confirms it.
- Order lids by diameter, not by cup volume.
Which should you choose?
If you are ordering printed cups and lids together from us, this resolves itself: our tall profile and matching lids are supplied to fit.
If you are switching profile, think about it as a workflow change rather than just a cup change. Your lids change, your dispensers may need adjusting, your machine clearance changes, and your artwork proportions change. None of that is difficult, but all of it is easier to plan than to discover.
Where to go from here
See sizes and pricing on our printed coffee cups, or browse coffee cup lids in both diameters. If you are unsure what profile your existing cups are, measure the rim and tell us the number and we will match it.