How many fluid ounces are in a large mcdonalds coffee cup?

Quick Answer

A large McDonald’s coffee cup holds 30 fluid ounces of coffee. McDonald’s coffee cup sizes range from small (12 oz), medium (16 oz), large (30 oz), and extra large (42 oz). The large 30 oz cup is one of the most popular sizes.

How Many Ounces are in a Large McDonald’s Coffee?

A large McDonald’s coffee is 30 fluid ounces. This is almost 1 liter in volume. To be more precise, 30 fluid ounces is 0.89 liters.

Some key facts about a large McDonald’s coffee:

  • Cup size: Large
  • Volume: 30 fluid ounces
  • Metric volume: 0.89 liters

So if you order a large hot coffee at McDonald’s, you will receive 30 ounces of coffee in a large disposable cup.

McDonald’s Coffee Cup Sizes

McDonald’s offers coffee in different cup sizes:

Cup Size Fluid Ounces
Small 12 oz
Medium 16 oz
Large 30 oz
Extra Large 42 oz

As you can see, the small is 12 ounces, medium is 16 ounces, large is 30 ounces, and extra large is 42 ounces.

The 30 ounce large size is a popular choice for many customers. It provides enough coffee to get your daily caffeine fix.

Fluid Ounces Explained

Fluid ounces are a unit of volume used in the United States. One fluid ounce is equal to 29.5735 milliliters.

Fluid ounces specifically measure the volume of liquids. There are both US fluid ounces and Imperial fluid ounces, which are slightly different measurements. McDonald’s uses US fluid ounces for beverage sizes.

There are 16 US fluid ounces in 1 US pint, and 128 US fluid ounces in 1 US gallon. Since McDonald’s large coffee is 30 fluid ounces, that means it’s nearly a quart in volume.

The fluid ounce is handy for measuring out coffee, soft drinks, water, juice, and any type of beverage. It gives a sense of how much liquid is in a container.

Do All McDonald’s Locations Use the Same Cups?

McDonald’s locations aim to follow the standard cup sizes, but there can be some variability. Here are a few factors that can affect coffee cup sizes:

  • Some franchises may use slightly different cup suppliers
  • There is manufacturing variability in cup production
  • Sizes may be approximate, not exact
  • Employees may make occasional errors filling cups

Despite this potential for variability, the large McDonald’s coffee cup will be around 30 fluid ounces in virtually all locations. It may be slightly over or under, but will be in the 30 ounce range. McDonald’s maintains strict guidelines on beverage cup sizes that franchise owners must follow.

Do Coffee Cups Impact Flavor?

The coffee cup can influence the coffee drinking experience. Factors such as cup material, size, shape, and even color may impact the flavor.

Here are some ways that coffee cups affect flavor:

  • Insulation – Insulated cups keep coffee hotter longer. Prolonged heat prevents flavors from dulling.
  • Lid – Lids help maintain heat and aroma. Drinking slit openings impact flavor experience.
  • Materials – Ceramic mugs allow fuller experience of flavors and aromas.
  • Size – Small cups concentrate coffee flavor and aroma.
  • Shape – Bowl shape of mug influences aroma and drinking.
  • Color – White cups improve perception of aromas.

McDonald’s coffee cups are disposable paper cups with plastic lids. The cups allow warmth to dissipate, but the coffee is meant to be consumed quickly. The light brown color also impacts the drinking experience.

In summary, cup design does change the flavor, though in quick-service restaurants like McDonald’s the impacts may be marginal over the short time period that the coffee is consumed.

Caffeine Content in McDonald’s Coffee

The caffeine content in a large 30 oz McDonald’s coffee is approximately:

  • 260 mg caffeine (30 oz cup)
  • 8.7 mg caffeine per fluid ounce

This caffeine information is based on McDonald’s own published data. Actual amounts can vary slightly.

A 30 ounce cup of McDonald’s coffee provides over 200 mg of caffeine, which is considered a high dose. For comparison:

Beverage Serving Size Caffeine
McDonald’s coffee (large) 30 oz 260 mg
Starbucks brewed coffee 16 oz 330 mg
Red Bull 8.4 oz 80 mg
Coca-Cola 12 oz 34 mg

McDonald’s uses a blend of Arabica beans for their coffee, which is higher in caffeine than the Robusta bean variety. Their coffee has caffeine levels comparable to Starbucks coffee.

The large 30 ounce cup provides ample caffeine to boost alertness and concentration. However, too much caffeine can also lead to jitteriness, insomnia, and other side effects in caffeine-sensitive individuals.

Taste and Quality of McDonald’s Coffee

McDonald’s coffee has an acceptable taste for a quick-service restaurant chain. Here is an evaluation of McDonald’s coffee quality:

  • Aroma – Moderate intensity aroma. Not as rich as specialty coffee shops.
  • Flavor – Medium bodied and mellow flavor. Relatively smooth without major bitterness or acidity.
  • Aftertaste – Fairly mild lingering aftertaste. Some bitterness remains.
  • Temperature – Served hot, but not piping hot. Drops below optimal drinking temperature quickly.
  • Acidity – Moderate acidity level for a balanced cup. Not overly acidic or tannic.
  • Sweetness – Only slight natural sweetness. Does not have a major roasted malt flavor profile.

McDonald’s uses a proprietary blend of Arabica beans sourced from Central and South America. The beans are roasted to a medium-dark level.

The coffee has sufficient flavor and aroma for a fast food setting. But it is not comparable to coffees from high-end specialty cafes. McDonald’s targets broad mainstream consumer tastes for coffee.

Overall, it’s a drinkable cup of basic black coffee that complements McDonald’s breakfast sandwiches and hash browns.

Nutrition Facts for McDonald’s Coffee

Plain black coffee from McDonald’s contains minimal calories and nutrients. Here are the basic nutrition facts for McDonald’s brewed coffee:

  • Calories: 3
  • Fat: 0g
  • Carbs: 0g
  • Protein: 0g
  • Caffeine: 260mg (large 30 oz)

A 30 ounce large coffee only provides 3 calories. There is no fat, carbohydrates, protein, vitamins or minerals.

The nutrition is derived almost entirely from trace amounts of antioxidants and polyphenols in the coffee beans.

Adding milk, cream, syrups and sugar will increase the calorie and nutrient content. But plain black coffee is essentially zero calories.

McDonald’s coffee can fit into low-calorie, low-carb, paleo, and ketogenic diets. It also works for fasting protocols like intermittent fasting or time-restricted feeding.

Price of a Large McDonald’s Coffee

A large 30 ounce McDonald’s coffee costs between $2.09 – $2.49 at most locations in the United States as of October 2022.

Here are some details on McDonald’s coffee prices:

  • Small (12 oz): $1.49
  • Medium (16 oz): $1.69
  • Large (30 oz): $2.09 – $2.49
  • Extra Large (42 oz): $2.49 – $2.89

These prices may be slightly higher in some metro areas and airports. Taxes are extra.

McDonald’s occasionally runs special deals like $1 any size coffee and offers coupons on their mobile app. Overall, the coffee provides solid value compared to Starbucks and other chains.

McDonald’s vs Starbucks Prices

McDonald’s coffee is generally cheaper than Starbucks specialty drinks:

Coffee Small Medium Large
McDonald’s $1.49 $1.69 $2.09
Starbucks $2.95 $3.65 $4.15

McDonald’s coffee is about 30% cheaper than Starbucks across all sizes. Both chains offer brewed coffee and espresso drinks.

McDonald’s is in the value end of the market targeting mainstream consumers. Starbucks targets more premium pricing for specialty beverages.

Tips for Enjoying McDonald’s Coffee

Here are some tips to get the best tasting McDonald’s coffee:

  • Ask for a fresh pot if coffee has been sitting awhile
  • Use cream and sugar to balance acidity and bitterness
  • Try adding flavors like vanilla, caramel or mocha
  • Enjoy immediately before temperature drops too much
  • Pair with McDonald’s breakfast sandwich, hash browns or muffin
  • Download app for coffee coupons and free weekly cups
  • Ask for a cup sleeve for hot insulation
  • Top with whipped cream for an indulgent treat

McDonald’s coffee will never rival specialty cafes, but these tips help maximize the taste and enjoyment of your McCafe brew.

Frequently Asked Questions

Here are answers to some common questions about McDonald’s coffee sizes:

How many ounces is McDonald’s small coffee?

McDonald’s small coffee is 12 ounces.

What is the biggest McDonald’s coffee size?

The extra large McDonald’s coffee is 42 ounces. This is the largest hot coffee they serve.

Is a large or medium better value?

The large coffee gives you the most coffee for your money at McDonald’s. The medium 16 ounce cup costs nearly as much as the 30 ounce large cup.

Do McDonald’s coffee cups have measurements?

McDonald’s coffee cups do not have fluid ounce or ml markings. You have to know the standard sizes – 12oz for small, 16oz for medium, 30oz for large.

Can you order a half-size coffee at McDonald’s?

No, McDonald’s does not offer half sizes of coffee. The smallest cup size is the 12 ounce small.


A McDonald’s large coffee contains 30 fluid ounces of coffee. This volume is equal to 0.89 liters.

The large cup is one of the most common coffee sizes ordered at McDonald’s. It provides enough caffeine and volume for most coffee drinkers’ needs at an affordable price point.

While not the most premium tasting coffee, McDonald’s still offers a convenient and drinkable cup of coffee. Following proper protocol for freshness, cream/sugar ratios, and temperature can optimize the coffee drinking experience.

Understanding McDonald’s coffee sizes in terms of fluid ounces helps you order your desired amount of coffee. A 30 ounce large provides 2.5x more coffee than a 12oz small cup.

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