A whole medium avocado contains roughly 975 mg of potassium, making it one of the richest everyday fruit sources of this mineral. Half an avocado, the standard single serving, delivers about 487 mg. That’s more than a medium banana, which has 422 mg.
Potassium by Serving Size
A medium Hass avocado weighs about 201 grams of edible flesh (not counting the skin and pit). Here’s how the potassium breaks down depending on how much you eat:
- One whole avocado (201 g): ~975 mg potassium
- Half an avocado (100 g): ~487 mg potassium
- One-third of an avocado (67 g): ~325 mg potassium
The FDA’s Daily Value for potassium is 4,700 mg for adults. A single half-avocado gets you about 10% of that target, which is a meaningful contribution from one food, especially considering most Americans fall well short of the recommendation. Eat a whole avocado and you’re covering roughly 21% of your daily need.
How Avocado Compares to Other Sources
Bananas get all the credit as the go-to potassium food, but avocados actually outperform them. A medium banana provides 422 mg of potassium, about 65 mg less than half an avocado. Other foods in the same range include a medium baked potato (about 900 mg with skin), a cup of cooked spinach (roughly 840 mg), and a cup of white beans (around 1,000 mg).
What makes avocado particularly useful is that people tend to eat it raw and unprocessed. You’re not losing any potassium to cooking water or draining liquid. Slice it onto toast, add it to a salad, or mash it into guacamole, and the potassium content stays intact. Mineral levels in avocados also don’t shift meaningfully as the fruit ripens, so a perfectly ripe avocado and one that’s slightly past its prime deliver essentially the same amount.
Why Potassium Matters
Potassium plays a direct role in regulating blood pressure. It helps relax blood vessel walls, which lowers the resistance your heart has to pump against. It also helps your kidneys flush out excess sodium through urine, which is especially relevant if your diet leans salty. People whose blood pressure is sensitive to sodium tend to benefit the most from higher potassium intake.
Beyond blood pressure, potassium is essential for normal muscle contraction and nerve signaling. Low intake over time is linked to fatigue, muscle cramps, and irregular heart rhythms. Because potassium works in balance with sodium, getting enough of it helps counteract the effects of a high-sodium diet rather than requiring you to eliminate salt entirely.
Getting More From Your Avocado
Pairing avocado with other potassium-rich foods can help you close the gap toward 4,700 mg without relying on supplements. A breakfast of avocado toast on whole wheat bread with a side of orange juice, for example, stacks three solid potassium sources into one meal. Adding black beans and avocado to a rice bowl does the same at lunch or dinner.
Avocados also deliver healthy fats, fiber, and several other nutrients alongside their potassium. A half-avocado has about 6-7 grams of fiber and roughly 15 grams of mostly monounsaturated fat. Those fats help your body absorb fat-soluble vitamins from other foods in the same meal, so topping a salad with avocado does more than add flavor.
If you buy avocados in bulk, you can freeze them without worrying about mineral loss. Halve them, remove the pit, and freeze in airtight bags. The texture softens after thawing, making them better for smoothies or dressings than for slicing, but the potassium content remains the same.