Beets are a moderately high source of potassium, providing about 442 mg per cup of raw beet. That’s a meaningful amount, covering roughly 13% of the daily recommended intake for adult men (3,400 mg) and 17% for adult women (2,600 mg). They’re not the most potassium-dense food you can eat, but they deliver enough to matter in your overall diet.
How Much Potassium Is in Beets
The potassium content varies depending on how your beets are prepared. One cup of raw beets contains about 442 mg of potassium. Cooking changes the picture: a cup of boiled, drained beet slices drops to around 259 mg, because potassium is water-soluble and leaches into the cooking liquid. Canned beets land in between at roughly 391 mg per cup, though they also come with added sodium.
If you want to keep as much potassium as possible, steaming is your best bet. It preserves more nutrients than boiling because the beets aren’t sitting in water that carries minerals away. Raw beets in a salad or smoothie retain the most potassium overall.
Beet greens are worth mentioning too. A cup of raw beet greens provides about 290 mg of potassium on its own. If you’re buying whole beets with the tops still attached, using both parts gives you a solid potassium boost from a single vegetable.
Beets Compared to Other Potassium Sources
For context, a medium banana (the food most people associate with potassium) contains roughly 420 mg. A cup of raw beets sits right in that same range at 442 mg. So beets are comparable to bananas as a potassium source, and they bring other nutritional benefits that bananas don’t, particularly nitrates and betalains (the pigments that give beets their deep red color).
Potatoes, sweet potatoes, and beans tend to rank higher on the potassium scale, often delivering 500 to 900 mg per serving. Beets aren’t at the top of that list, but they’re solidly in the “good source” category.
Beets, Blood Pressure, and Potassium
You may have heard that beets are good for blood pressure. That’s true, but the mechanism is interesting: it’s primarily the nitrates in beets doing the heavy lifting, not the potassium. Your body converts nitrates into nitric oxide, a molecule that relaxes blood vessel walls and improves blood flow. Research published in the American Heart Association’s journal Hypertension found that dietary nitrate may be roughly 100 times more potent than potassium at protecting against salt-induced blood pressure increases, on a weight-for-weight basis.
That doesn’t mean the potassium in beets is irrelevant. Potassium helps your kidneys flush excess sodium and eases tension in blood vessel walls. But when it comes to beets specifically, the blood pressure benefit is really a two-for-one deal: you’re getting meaningful potassium alongside nitrates that work through a completely separate pathway. The nitrates appear to be especially effective at promoting blood flow in the kidneys, which helps regulate blood pressure even when salt intake is high.
Kidney Disease and Beet Potassium
People with chronic kidney disease often need to monitor potassium intake because damaged kidneys can’t filter it efficiently, allowing levels to build up in the blood. But the restrictions aren’t universal. According to the National Kidney Foundation, most people with early-stage kidney disease or a kidney transplant don’t need to limit root vegetables like beets because of their potassium content. Restrictions typically come into play when blood tests show elevated potassium levels, and your doctor or dietitian will guide those limits based on your specific lab results.
The picture also shifts depending on the type of dialysis. People on standard hemodialysis three times a week may need to watch higher-potassium foods more carefully. But those on daily home dialysis or peritoneal dialysis, which remove more potassium, may actually need to increase their intake, and root vegetables like beets are a recommended way to do that.
One practical tip from the National Kidney Foundation: peeling beets (and other root vegetables) before cooking can reduce potassium content slightly. Combined with boiling, which leaches additional potassium into the water, you can meaningfully lower the amount you actually consume if that’s a concern for your situation.