How Much Potassium in Coffee?

cup of coffee on wooden background

There are essentially six main groups of nutrients. They are water, carbohydrates, proteins, fats, vitamins and minerals. now there is another group that is not numbered with these six but is nonetheless important to your diet. that’s electrolytes. Electrolytes are actually minerals, but they are often said to have a different function. Probably the most important electrolyte in the human diet is potassium. Potassium can be found in potatoes, bananas, mushrooms, cucumbers, and, believe it or not, coffee.

Reading: How much potassium in a cup of coffee

Coffee is already the number one source of antioxidants in the Western diet, and it turns out that it can actually help supply our bodies with potassium. this is great news because in the western world we drink a lot of coffee. it also turns out that we don’t get enough potassium. So, is the solution to drink liters of coffee? we wish it was that easy, we love coffee too! In this article, we’ll take a closer look at what role coffee can play in getting you more potassium. But first, we need to understand what exactly an electrolyte is.

what are electrolytes?

Electrolytes are essential minerals that are soluble in water. when dissolved in water, the fluid becomes electrically conductive. let’s use an example. salt is a mineral and an electrolyte. It is composed of sodium chloride (NaCl). When salt is placed in water and dissolves, the sodium and chloride separate. that water is now more conductive of electricity. electrical conductivity is vital for overall cellular health. potassium, being an electrolyte, can help with this.


Your body needs at least 4,500 mg of potassium per day. however, in our vegetable-deprived diet, we often get much less. but the good news for us is that coffee contains potassium. we can get our fix and support the health of our cells at the same time.

How much potassium is in coffee?

An 8 oz cup of coffee contains about 118 mg of potassium. This is amazing for a beverage, especially one we often think of as having no calories. While this is true, it does not mean that there is no nutritional value in coffee. That said, coffee may not be the main source of potassium in your diet. if you drink four cups a day, you’re not getting even 500 mg of potassium, which is just over 10% of your diet. but don’t dismiss it as a minor supplement to your potassium intake. if you add a splash of milk or cream, you might also get about an additional 40 mg of potassium.

foods rich in potassium

Among all the foods that contain potassium, one stands out above the rest for its potassium content. that’s a banana. a medium-sized banana contains about 420 mg of potassium. grabbing a banana is easy. they are tasty and you can eat them relatively quickly. it also staves off hunger, so you’re not reaching for that bag of chips between meals. however, the banana is simply the most popular of the potassium-rich foods, and while it contains a lot (certainly more than coffee), even a medium-sized red potato contains 620 mg of potassium.

Is coffee bad for the kidneys?

When it comes to potassium, for a person in good health, coffee is not bad for the kidneys. however, for those who suffer from kidney disease and hyperkalemia (excess potassium in the blood), it would be good to give up coffee. those who suffer from kidney disease have a reduced ability to filter electrolytes in the body. the result is the retention of too many minerals and electrolytes.

See also: The Best Austin Specialty Coffee Roasters in 2022

Excessive caffeine consumption has also been linked to kidney stones. but a moderate amount (1-3 cups per day) shouldn’t hurt.

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final thoughts

If you’re looking for that morning boost from your cup of joe, then you can count on it for substantial caffeine content. it is also the number one source of antioxidants in the western diet. it also provides a small potassium bonus. most of us probably didn’t know we were getting that! But the best way to include potassium in your diet is to eat potassium-rich foods. Eating a banana in the morning with your coffee is a great way to start the day!

see also: Are there tannins in coffee?

featured image credit: karolina grabowska, pexels

See also: The 21 Best Winnipeg Coffee Shops and Cafés


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