How Much Potassium Is In Coffee? Here’s The Truth

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Have you ever wondered about the potassium content in your daily cup of coffee? Often celebrated for its energizing effects and rich flavor, coffee remains a beloved beverage worldwide.

While its caffeine content has been extensively studied, the potassium levels in coffee tend to be overlooked.

However, recent research has shed light on the surprisingly significant potassium presence in this popular drink.

Coffee typically contains a small amount of potassium, varying depending on the type and additives used.

For instance, an 8-ounce cup of black coffee contains approximately 116 mg of potassium, while decaf coffee and instant coffee have slightly higher and lower potassium content, respectively.

In this blog post, we delve into the depths of coffee’s potassium content, exploring its health implications and providing valuable insights for coffee enthusiasts and health-conscious individuals alike.

Exploring the Role of Potassium

Potassium, often referred to as an electrolyte, plays a crucial role in maintaining the overall health and proper functioning of the body’s tissues.

This essential mineral carries a small electrical charge that activates a multitude of cell and nerve functions, making it indispensable for our well-being.

Its primary responsibility lies in regulating fluid levels within our cells, while its counterpart, sodium, performs a similar role outside the cells.

While potassium can be obtained naturally through various foods and supplements, most individuals in the United States fail to meet the recommended potassium intake.

How Much Potassium Is In Coffee?

Understanding the potassium content in coffee can provide valuable insights for those monitoring their potassium intake and seeking a comprehensive understanding of their daily beverage choices.

Potassium Content in Different Types of Coffee

Black coffee (8 ounces)

When consumed in its pure form, black coffee contains approximately 116 mg of potassium.

While this is considered low in potassium, it still contributes to the overall daily intake of this essential mineral.

Decaf coffee (8 ounces)

Decaffeinated coffee contains slightly higher potassium levels compared to regular coffee, with an approximate amount of 216 mg per 8-ounce serving.

This difference may be attributed to the decaffeination process or variations in bean types.

Instant coffee (8 ounces)

Instant coffee typically contains lower levels of potassium compared to regular brewed coffee.

An 8-ounce serving of instant coffee contains approximately 96 mg of potassium.

Potassium Variation with Additives

The addition of various substances to coffee, such as milk or sweeteners, can affect its potassium content.

Here are some examples:


The potassium content in coffee can increase depending on the type and quantity of milk used as an additive.

For instance, 1% milk contributes approximately 366 mg of potassium per cup, while skimmed milk contains around 381 mg.

Soy milk is relatively rich in potassium, offering approximately 298 mg per cup. In contrast, rice milk has a significantly lower potassium content, with just 61 mg per cup.


Creamers, commonly used to add flavor and creaminess to coffee, generally have potassium content ranging between 50 and 100 mg per serving.

The specific brand and type of creamer can influence the exact potassium levels.

Exploring Some High-Potassium Foods

When it comes to maintaining fluid and blood balance in the body, potassium plays a vital role.

Luckily, a diverse range of foods can provide this essential nutrient.

In this section, we highlight some high-potassium-rich foods that you can incorporate into your diet:

Swiss Chard (1 cup cooked, 960 mg)

At the top of the list, Swiss chard reigns as an exceptional source of potassium, providing a staggering 960 mg per cooked cup.

This leafy green vegetable offers a nutrient-packed addition to salads, stir-fries, or sautés.

Spinach (1 cup cooked, 840 mg)

Following closely is spinach, with its rich potassium content of 840 mg per cooked cup.

This versatile green can be enjoyed in salads, smoothies, or cooked dishes, offering a potent dose of essential nutrients.

Avocado (1 cup, 708 mg)

Avocado, beloved for its creamy texture and healthy fats, also boasts an impressive potassium content of 708 mg per cup.

Enjoy it in salads, as a spread, or in various culinary creations.

Sweet Potato (medium, 700 mg)

With its vibrant hue and natural sweetness, a medium-sized sweet potato contributes approximately 700 mg of potassium.

Baked, roasted, or mashed, this versatile root vegetable offers both flavor and nutritional value.

Bok Choy (1 cup cooked, 630 mg)

A powerhouse vegetable, bok choy offers 630 mg of potassium per cooked cup.

Add it to stir-fries, soups, or sauté it as a nutritious side dish.

Potato (medium, 610 mg)

The humble potato, enjoyed in various forms, contains approximately 610 mg of potassium per medium-sized spud.

Whether baked, mashed, or roasted, potatoes provide a satisfying source of this essential nutrient.

White Beans (1/2 cup, 600 mg)

White beans, renowned for their creamy texture, are a fantastic source of potassium, providing 600 mg per half-cup serving.

Incorporate them into soups, stews, or salads for a nutrient boost.

Beets (1 cup, 520 mg)

These vibrant root vegetables pack a punch when it comes to potassium, offering around 520 mg per cup.

Enjoy beets roasted, steamed, or as a colorful addition to salads.

Brussels Sprouts (1 cup cooked, 500 mg)

Brussels sprouts, known for their cruciferous goodness, contain approximately 500 mg of potassium per cooked cup.

Roast or sauté them as a delightful side dish or incorporate them into salads for added crunch.

Broccoli (1 cup cooked, 460 mg)

Rounding out our top 10 list, broccoli provides a respectable 460 mg of potassium per cooked cup.

Steam, stir-fry, or roast this versatile vegetable to reap its potassium-rich benefits.

Other Options

In addition to these high-potassium foods, other options such as bananas, oranges, cantaloupe, honeydew, apricots, grapefruit, mushrooms, peas, cucumbers, zucchini, pumpkins, leafy greens, tomato juice, prune juice, and certain dairy products like milk and yogurt also contribute to your daily potassium intake.

Incorporating these foods into your meals and snacks can help ensure a well-rounded and potassium-rich diet, supporting your overall health and well-being.

Health Benefits of Potassium

Potassium is an essential mineral that is necessary for the normal functioning of all cells in the body. 

Here are some of the health benefits of potassium:

  • Regulates heartbeat: Potassium helps regulate the heartbeat and ensures proper function of the muscles and nerves.
  • Maintains fluid levels: Potassium helps maintain fluid levels in the body and supports the functioning of the kidneys.
  • Supports cardiovascular health: A potassium-rich diet can help maintain healthy blood pressure and support heart health.
  • May help manage blood sugar levels: Potassium may help stabilize healthy blood sugar levels.
  • May help prevent osteoporosis and kidney stones: A potassium-rich diet may help prevent osteoporosis and kidney stones.

The Health Risks Associated With Potassium

Getting too little potassium can increase blood pressure, deplete calcium in bones, and increase the risk of kidney stones. 

Prolonged diarrhea or vomiting, laxative abuse, diuretic use, eating clay, heavy sweating, dialysis, or using certain medications can cause severe potassium deficiency. 

In this condition, called hypokalemia, blood levels of potassium are very low. S

Symptoms of hypokalemia include constipation, tiredness, muscle weakness, and not feeling well. 

More severe hypokalemia can cause increased urination, decreased brain function, high blood sugar levels, muscle paralysis, difficulty breathing, and irregular heartbeat.

It is important to manage your potassium levels with diet and treatment. 

If you have kidney disease or are taking medications for high blood pressure, talk to your doctor before taking potassium supplements.


While coffee is not a significant source of potassium, it still contains a notable amount depending on the type and additives used.

Black coffee, decaf coffee, and instant coffee offer varying levels of potassium, with black coffee having the lowest content.

However, when additives like milk or sweeteners are included, the potassium content can increase.

Understanding the potassium content in coffee can be valuable for individuals mindful of their nutrient intake.

Remember to consider other potassium-rich foods and incorporate them into your diet to ensure a balanced approach to potassium consumption.


Which has more potassium tea or coffee?

Both tea and coffee have comparable levels of potassium, with tea containing slightly less potassium than coffee.

However, it’s worth noting that neither tea nor coffee naturally contains a significant amount of potassium.

Which coffee has the most potassium?

The type of coffee that generally has the most potassium content is decaf coffee.

Decaffeinated coffee typically contains slightly higher levels of potassium compared to regular coffee or instant coffee.

Is black tea high in potassium?

Black tea, prepared with tap water, contains approximately 90 mg of potassium per 8-ounce cup, which is classified as a beverage with low potassium content.

However, if consumed in multiple cups throughout the day, the cumulative potassium intake can increase.

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Jacob Harris

Jacob is a coffee enthusiast who turned his passion into a career. As the owner and editor of Karma Coffee Cafe, he shares his extensive knowledge and recommendations, captivating fellow coffee lovers.

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