Are you tired of contributing to the waste produced by disposable coffee cups? Well, you’re not alone. Many people are looking for ways to reduce their environmental impact and one way to do that is by using a reusable coffee cup. But what size should you choose?
Reusable coffee cups come in a variety of sizes, ranging from small to giant. The most common sizes for disposable coffee cups are 8oz (230ml) and 12oz (340ml), while larger coffee cups can hold up to 16oz (450ml).

Here is a table that outlines the major coffee sizes in both ounces and milliliters and the reusable cup that matches.
Common Re-usable Coffee Cup Sizes
Coffee Cup | Reusable Cup (KeepCup) | Ounces | ml |
Espresso size | Extra Small | 4oz | 118ml |
Small latte or cappuccino | 3/4 Cup | 6oz | 177ml |
Regular mocha or latte | Small | 8oz | 227ml |
Medium Cap/mocha/latte | Medium | 10-12oz | 340ml |
Large latte/cap/long black | Large | 16oz | 454ml |
What size is a regular coffee cup?
Regular coffee cups range in size from 200-300ml or 6-10oz depending on how full they are.
The most popular sizes for takeaway cups at cafes are 8oz and 12oz. A study was done in Australia in 2011 by Food Standards Australia and New Zealand measuring the size of coffee cups from 38 different cafes.
This data showed that the average small coffee was 281ml from independent stores, and 286ml from chain stores. Large coffee sizes ranged from 490ml to 520ml.
What size do reusable coffee cups come in?
There are 2 main sizes of takeaway take away cups, they are generally 8oz (230ml) or 12 oz (340ml). Large coffee cups are 450mls or 16 oz. Of the main brands that supply reusable cups, below are listed the sizes available.
Some companies are offering a wider range than others. You will notice the Frank Green for example offer an extra size of 10oz in between the 8oz and 12oz range.
Reusable coffee cup Sizes
When it comes to reusable coffee cups, there are a few common sizes that you can choose from.
Small
Small reusable coffee cups are typically around 8 ounces (230 ml) in size. These cups are perfect if you prefer to drink small amounts of coffee or tea, or if you like to take your time sipping your drink. They are also great if you are looking for a cup that is easy to carry around with you, as they are usually quite compact.
Medium
Medium reusable coffee cups are usually around 12 ounces (340 ml) in size. These cups are a good choice if you like to drink a little more coffee or tea, but still want a cup that is easy to carry around with you. They are also a good choice if you like to add milk or other ingredients to your coffee, as they provide a little more space for these additions.
Large
Large reusable coffee cups are typically around 16 ounces (450 ml) in size. These cups are a good choice if you like to drink a lot of coffee or tea, or if you like to share your drink with someone else. They are also a good choice if you like to add a lot of milk or other ingredients to your coffee, as they provide plenty of space for these additions.
Consider how often you will be using the cup, and whether you need a cup that is easy to carry around with you. By considering these factors, you can choose a reusable coffee cup that is perfect for you.
Reusable Coffee Cup Sizes by Brand
Size | Keep Cup | Joco | Frank Green | SoL |
Extra Small | 4oz (118ml) | 4oz | ||
SiX | 6oz (177ml) | 6oz | ||
Small | 8oz (227ml) | 8oz | 8oz (230ml) | 8oz |
Medium | 10-12oz (340ml) | 12oz | 10oz (295ml) | 12oz |
Large | 16oz (454ml) | 16oz | 12oz (340ml) | 16oz |
How to Choose a Coffee Cup
When it comes to choosing the right size for your reusable coffee cup, it’s important to consider your personal preferences and needs. Here are some factors to consider when deciding on the size of your cup:
1. Volume
The volume of your cup will determine how much coffee you can carry with you. If you prefer a small amount of coffee, a 4-8 oz cup may be sufficient. However, if you like to drink larger quantities of coffee, you may want to opt for a 12-16 oz cup.
2. Portability
If you’re always on the go and need a cup that fits easily in your bag or cup holder, a smaller cup may be more convenient. However, if you have a longer commute or need your coffee to last throughout the day, a larger cup may be a better option.
3. Comfort
The size of your cup can also affect your comfort while drinking. If you have smaller hands or prefer a lighter cup, a smaller size may be more comfortable. On the other hand, if you have larger hands or prefer a more substantial cup, a larger size may be more comfortable.
4. Sustainability
Choosing a larger cup can also have sustainability benefits. By carrying a larger cup, you may be less likely to purchase multiple cups of coffee throughout the day, reducing waste and saving money in the long run.
When deciding on the size of your reusable coffee cup, it’s important to consider your personal preferences and needs. By taking into account factors such as volume, portability, comfort, and sustainability, you can choose a cup that is the perfect fit for you.
Summary
When it comes to choosing the right size for your reusable coffee cup, it ultimately depends on your personal preferences and needs. However, there are a few things to keep in mind.
Firstly, consider the type of coffee you usually drink. If you prefer a small espresso shot, a smaller cup size of 4-6 oz may be suitable for you. On the other hand, if you enjoy larger drinks like lattes or cappuccinos, a larger cup size of 12-16 oz may be more appropriate.
I am an accredited practicing dietitian, experienced gardener and a dedicated cook. I love writing and sharing my experience so you can learn from my successes and mistakes.