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Published on: 9/24/2026

What are the best food sources of potassium?

Potassium-rich foods include white beans, lentils, potatoes and sweet potatoes with skin, spinach, beet greens, avocado, bananas, oranges, dried apricots, prunes, tomato paste, salmon, yogurt, milk, and coconut water, with beans, leafy greens, and potatoes generally delivering the most per serving. How much you need, and which sources are safest for you, depends on several factors including kidney function, blood pressure, and medications such as diuretics or ACE inhibitors, so see below to understand more.

If you are seeking out potassium because of symptoms like muscle cramps, weakness, fatigue, constipation, or heart palpitations, food choices alone may not address the underlying cause. A free, instant, online symptom check can help you organize what you are experiencing, surface possible explanations such as low or high potassium, dehydration, or thyroid and kidney issues, and clarify whether this warrants a conversation with a clinician. It takes only a few minutes and gives you clearer language and next steps before your next appointment.

Last reviewed for medical accuracy: 09/24/2026

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Explanation

What Are the Best Food Sources of Potassium? (How to Get Potassium in Your Diet)

Potassium is an essential mineral that helps regulate fluid balance, support nerve and muscle function, and maintain a healthy heartbeat. Many of us don’t get enough potassium from our diets, yet it’s easy to boost your intake by choosing the right foods. Below, you’ll find clear guidance on how to get potassium through everyday meals, plus practical tips for making it part of your routine.


Why Potassium Matters

  • Fluid balance: Potassium works alongside sodium to keep fluids in and around cells in balance.
  • Muscle and nerve function: It’s crucial for normal nerve signals and muscle contractions.
  • Heart health: Adequate potassium helps maintain a steady heartbeat and healthy blood pressure.
  • Bone health: It may reduce calcium loss and support stronger bones.

Deficiency is uncommon in healthy people eating a varied diet, but low potassium can cause fatigue, muscle cramps, and sometimes irregular heartbeat. If you experience concerning symptoms, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker.


Daily Potassium Needs

The amount of potassium you need depends on age, sex and life stage:

  • Adults (19+): 2,600–3,400 mg per day
  • Pregnant women: about 2,900 mg per day
  • Breastfeeding women: about 2,800 mg per day
  • Children and teens: 2,000–3,000 mg per day (varies by age)

Most people in the U.S. fall short of these targets. By making nutrient-rich choices at each meal, you can easily hit your goal.


Top Food Sources of Potassium

Below are food categories and specific items that pack a potassium punch. Values are approximate milligrams (mg) per serving.

Fruits

  • Bananas (1 medium): 422 mg
  • Oranges (1 medium): 237 mg
  • Cantaloupe (1 cup): 427 mg
  • Kiwi (1 medium): 215 mg
  • Prunes, dried (½ cup): 637 mg
  • Avocado (½ medium): 487 mg

Vegetables

  • Spinach, cooked (1 cup): 839 mg
  • Sweet potato, baked with skin (1 medium): 541 mg
  • Beet greens, cooked (1 cup): 1,309 mg
  • Swiss chard, cooked (1 cup): 961 mg
  • Acorn squash, baked (1 cup): 448 mg
  • White potato, baked with skin (1 medium): 926 mg

Legumes and Beans

  • White beans, cooked (½ cup): 502 mg
  • Lentils, cooked (½ cup): 365 mg
  • Kidney beans, cooked (½ cup): 358 mg
  • Black beans, cooked (½ cup): 305 mg
  • Chickpeas, cooked (½ cup): 238 mg

Dairy and Alternatives

  • Yogurt, plain nonfat (1 cup): 579 mg
  • Milk, low-fat (1 cup): 366 mg
  • Soy milk (1 cup): 370 mg

Fish and Seafood

  • Salmon, cooked (3 oz): 534 mg
  • Tuna, cooked (3 oz): 484 mg
  • Halibut, cooked (3 oz): 490 mg

Nuts, Seeds and Snacks

  • Pistachios (1 oz, about 49 nuts): 291 mg
  • Almonds (1 oz, about 23 nuts): 200 mg
  • Sunflower seeds (1 oz): 241 mg
  • Pumpkin seeds (1 oz): 226 mg

How to Get Potassium Every Day

  1. Start with breakfast:
    • Add sliced banana or berries to oatmeal.
    • Stir spinach into an omelet or smoothie.
  2. Build a veggie-packed lunch:
    • Toss chickpeas, avocado, tomatoes and leafy greens into a salad.
    • Enjoy a cup of low-sodium vegetable soup.
  3. Snack smart:
    • Keep a small bag of nuts or dried fruit handy.
    • Munch on yogurt with sliced kiwi or melon.
  4. Boost dinner with sides:
    • Serve baked sweet potato or steamed Swiss chard.
    • Include a portion of grilled salmon or tuna.
  5. Hydrate wisely:
    • Drink milk or fortified soy milk.
    • Blend a fruit-and-veg smoothie for extra hydration and nutrients.

Small swaps—like trading chips for edamame or adding a handful of spinach to your pasta—add up quickly.


Balancing Potassium and Sodium

Modern diets often contain too much sodium and not enough potassium. A balanced ratio helps:

  • Aim for more high-potassium foods (listed above).
  • Limit processed and fast foods high in sodium.
  • Flavor meals with herbs, lemon, garlic and spices instead of salt.

Potential Concerns and When to Check Symptoms

Most healthy people can safely increase potassium by eating the foods listed. However, certain conditions or medications can affect potassium levels:

  • Kidney disease: May impair potassium removal
  • Certain blood pressure medications: ACE inhibitors, ARBs, potassium-sparing diuretics
  • Severe dehydration or burns

Signs of serious imbalance include muscle weakness, irregular heartbeat or chest pain. If you notice these symptoms—or if you’re on medication that affects potassium—consider a free, online symptom check, using the doctor approved Ubie Symptom Checker. Always speak to a doctor about anything life-threatening or serious.


Key Takeaways

  • Potassium is vital for muscles, nerves and heart health.
  • Adults need 2,600–3,400 mg daily; children and teens require slightly less.
  • Fruits, vegetables, beans, dairy, fish and nuts are rich sources.
  • Incorporate high-potassium foods at every meal to meet goals naturally.
  • Balance potassium with lower sodium intake for optimal health.
  • Use the Ubie Symptom Checker for any worrying signs, and always speak to a doctor about serious concerns.

By choosing a variety of these foods each day, you’ll easily learn how to get potassium and support your overall well-being.

(References)

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  • * McLean RM, Wang NX. Potassium. Adv Food Nutr Res. 2021;96:89-121. doi: 10.1016/bs.afnr.2021.02.013. Epub 2021 May 24. PMID: 34112360.

  • * Welling PA, Little R, Al-Qusairi L, Delpire E, Ellison DH, Fenton RA, Grimm PR. Potassium-Switch Signaling Pathway Dictates Acute Blood Pressure Response to Dietary Potassium. Hypertension. 2024 May;81(5):1044-1054. doi: 10.1161/HYPERTENSIONAHA.123.22546. Epub 2024 Mar 11. PMID: 38465625; PMCID: PMC11023808.

  • * Kuhlmann MK, Fleig S. [Nutrition for patients on dialysis]. Dtsch Med Wochenschr. 2024 Nov;149(23):1431-1442. doi: 10.1055/a-2199-8816. Epub 2024 Nov 6. PMID: 39504979.

  • * Hoorn EJ, Subramanya AR, Boyd-Shiwarski CR. Potassium and the kidney. Nat Rev Nephrol. 2026 May;22(5):347-362. doi: 10.1038/s41581-026-01053-5. Epub 2026 Jan 29. PMID: 41611896.

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