Mug vs Cup: What's the Difference?
People use "mug" and "cup" as if they mean the same thing, and in everyday talk that's fine. But there is a real difference in shape, size and how each one is used. Here's how to tell a mug from a cup.
The short answer
A mug is a tall, straight-sided drinking vessel with a sturdy handle, made to be used on its own. A cup is usually smaller, has a thinner wall and often comes with a matching saucer.
Mug vs cup compared
| Mug | Cup | |
|---|---|---|
| Shape | Tall, cylindrical, straight sides | Shorter, often wider at the rim or tapered |
| Size | Usually 10–15 oz (300–450 ml) | Usually 6–8 oz (180–240 ml) |
| Walls | Thick, holds heat well | Thinner, more delicate |
| Saucer | No | Often yes (teacups, cappuccino cups) |
| Typical use | Everyday coffee, tea, cocoa | Tea service, espresso drinks, formal settings |
| Material | Ceramic, stoneware, enamel, steel | Porcelain, bone china, glass |
Is a mug a cup?
Technically, yes. A mug is a type of cup: any small open container you drink from counts as a cup. But not every cup is a mug. A teacup or espresso cup is too small, too delicate or too wide to be called a mug.
What about "a cup" as a measurement?
A measuring cup in the US holds 8 fl oz. A cup of coffee on a coffee maker is usually only 5 to 6 oz. A standard mug holds more than either, which is why one mug often equals about two coffee-maker cups. See our mug size guide for the details.
When to choose a mug
- You want a big drink that stays warm while you sit with it.
- You drink coffee or tea every day and want something sturdy.
- You like a printed design or a mug with personality.
When to choose a cup
- You're serving espresso, cappuccino or tea with a saucer.
- You want a lighter, more formal look.
Team mug? Browse our coffee mugs, tea mugs or all mugs.