A cup is a small, open drinking vessel used for water, tea, coffee and other beverages. It may have a handle, although a handle is not essential. The word “cup” can also describe a standard unit used in cooking, so its meaning depends on the context.
This guide explains what a cup is, how cups differ from mugs and glasses, the main types of cups, and what “one cup” means in a recipe.
What Is a Cup?
A cup is a container designed mainly for drinking. Most cups have an open top, a stable base and a bowl-shaped or cylindrical body. Many have a small handle, but handleless cups are common in several cultures.
Cups can be made from ceramic, porcelain, glass, metal, plastic, paper or wood. Their shape and material usually reflect the beverage they are meant to hold. A small porcelain cup suits espresso, while a taller insulated cup is more practical for a drink taken on the move.
If you prefer natural drinkware, explore our wooden drinking cups.
What Are the Main Parts of a Cup?
Although designs vary, most cups have four basic parts:
- Body: the main section that holds the liquid.
- Rim: the top edge from which you drink.
- Base: the flat bottom that keeps the cup stable.
- Handle: an optional grip that keeps your hand away from a hot surface.
A saucer is not part of the cup itself. It is a separate shallow dish placed underneath a teacup or coffee cup to catch drips and hold a spoon.
Cup vs Mug: What Is the Difference?
A mug is a type of drinking cup, but it is usually larger, heavier and more casual. Mugs normally have a substantial handle and thicker walls. Traditional cups are often smaller, lighter and paired with a saucer.
| Feature | Cup | Mug |
|---|---|---|
| Typical capacity | About 2–8 US fl oz for espresso or tea; larger cups also exist | Commonly 8–16 US fl oz |
| Handle | Optional or small | Usually large and easy to grip |
| Walls | Often thinner | Usually thicker |
| Saucer | Often used with formal tea or coffee cups | Rarely included |
| Common use | Tea, espresso, coffee and cold drinks | Coffee, tea, hot chocolate and soup |
The boundary is not strict. A coffee shop may call almost any handled drinking vessel a cup, while manufacturers may use “cup” and “mug” interchangeably.
Common Types of Cups
Coffee cup
A coffee cup is designed for hot coffee. Its size depends on the drink. An espresso cup may hold only 2–3 ounces, while a cup for filter coffee is usually much larger. Ceramic and porcelain are popular because they feel comfortable at the rim and do not affect flavour.
Teacup
A traditional teacup is light, relatively small and often served with a saucer. It normally has a handle and a wide opening that allows the tea to cool slightly before drinking.
Espresso cup
An espresso cup, also called a demitasse, is small because espresso is served in a concentrated amount. Its thick walls help retain heat while the drink is served.
Travel cup
A travel cup or travel mug usually has a lid and insulated walls. It is designed to reduce spills and keep a beverage hot or cold during a commute.
What Is a Measuring Cup?
A measuring cup is a kitchen tool rather than ordinary drinkware. It has volume markings for ingredients such as water, milk, sugar or flour. Liquid measuring cups usually have a pouring spout, while dry measuring cups are filled to the top and levelled.
Wooden cup
A wooden cup is warm to the touch, lightweight and visually distinctive. It must be made with a food-safe finish and cared for correctly. Read our guide to drinking safely from wooden cups before using one for very hot or acidic drinks.
What Does One Cup Mean as a Measurement?
In a recipe, “1 cup” is a fixed measurement of volume, not a random drinking cup. In the United States, the customary amount is 8 US fluid ounces, about 236.6 ml. A metric cup is 250 ml.
For US recipes, the most useful liquid conversions are:
- 8 US fluid ounces
- 16 tablespoons
- 48 teaspoons
- About 236.6 millilitres
- Half of a US pint
Volume and weight are not the same. A cup of water weighs more than a cup of flour because the ingredients have different densities. For consistent baking, weigh dry ingredients in grams or use the measuring method stated in the recipe.
How Many Ounces, Tablespoons and Teaspoons Are in a Cup?
For recipe measurements, one US cup contains 8 fluid ounces, 16 tablespoons or 48 teaspoons. A drinking vessel has no single standard capacity. An espresso cup may hold 2–3 fl oz, a teacup about 6 fl oz, and a regular coffee cup around 8–12 fl oz. Larger café cups and travel mugs can be bigger.
Always check the product capacity if size matters. The label “cup” describes the vessel, not a guaranteed amount of liquid.
What Materials Are Cups Made From?
Each material changes the weight, durability and drinking experience:
- Ceramic: versatile, affordable and suitable for hot or cold drinks.
- Porcelain: smooth, light and commonly used for formal tea and coffee sets.
- Glass: non-porous and useful when you want to see the drink.
- Stainless steel: durable and often used in insulated travel cups.
- Plastic: lightweight and resistant to breakage, though not every type suits hot liquid.
- Paper: convenient for takeaway drinks but intended mainly for short-term use.
- Wood: natural, lightweight and distinctive, but it requires gentle cleaning and regular care.
Curious about making natural drinkware? See our guide on how to make a wooden mug.
How to Choose the Right Cup
Start with the drink you serve most often. Choose a small cup for espresso, a wide cup for tea, or an insulated cup for travel. Then consider capacity, handle comfort, rim thickness and how easily the cup can be cleaned.
For a hot beverage, a handle and heat-resistant material make the cup safer to hold. For a cold drink, a glass or tumbler may feel more natural. If the cup will sit on a wooden table, use a properly sized coaster to catch condensation. Our guide explains what size a drink coaster should be.
How to Care for a Cup
Follow the maker’s cleaning instructions. Most ceramic, porcelain and glass cups are easy to wash with warm water and dish soap. Check whether decorated or insulated cups are dishwasher-safe before placing them in a machine.
Wash wooden cups by hand and dry them promptly. Do not soak them for long periods. When the surface begins to look dry, apply a suitable food-safe oil according to the manufacturer’s advice.
Protecting and Personalising Cups
A coaster protects a table from heat, moisture and scratches. Decorative options such as custom PVC patches can also be used as flexible coasters when the material is suitable for the drink’s temperature.
Water-resistant die-cut stickers can personalise some travel cups and containers. Check that the adhesive and surface are suitable, and keep decorations away from the rim.
Frequently Asked Questions
What makes a cup a cup?
A cup is an open vessel made to hold a drink. It normally has a stable base and a rim suitable for drinking. A handle is common but not required.
Is a mug a type of cup?
Yes. A mug is a large, sturdy type of cup that normally has a handle and holds more liquid than a traditional teacup or espresso cup.
Can a cup have no handle?
Yes. Many cups have no handle, including tumblers, traditional tea bowls and some wooden drinking cups.
What is the difference between a cup and a glass?
A glass is usually a handleless drinking vessel made from glass, although the term can describe similar shapes made from other materials. A cup may be made from many materials and may have a handle.
How many ounces are in a recipe cup?
A US customary measure contains 8 fluid ounces. This does not describe the capacity of every drinking vessel.
How many millilitres are in a cup?
A US customary cup is about 236.6 millilitres. A metric version is 250 millilitres, so check which standard a recipe uses.
Should tea be served in a cup or a mug?
Either works. A teacup and saucer suit a smaller or more formal serving. A mug is better when you want a larger drink that stays warm for longer.
ABOUT THE AUTHOR
Olivia Poglianich
Content Strategist
Olivia Poglianich is a nomadic brand strategist and copywriter in the wooden crafts and 3D product design space who has worked with brands such as Visa, Disney and Grey Goose. Her writing has taken her all over the world, from a Serbian music festival to a Malaysian art and culture event. Olivia is a graduate of Cornell University and often writes about travel, hospitality, the start-up ecosystem and career coaching.
