Cashews are one of the potassium-rich tree nuts, providing about 660 mg of potassium per 100 g — roughly 185 mg in a one-ounce handful. That single serving supplies about 4% of the Daily Value, and a larger portion can move the needle meaningfully for anyone tracking electrolytes, managing blood pressure, or following a potassium-conscious diet. The Cashew Potassium Calculator turns any serving size into precise milligrams of potassium and shows what that means against the 4,700 mg Daily Value.
Whether you weigh ingredients on a kitchen scale or work in cups and handfuls, this tool handles grams and ounces, raw and dry-roasted cashews, and includes quick-fill presets for common portions. It is designed for meal planners, fitness enthusiasts, and anyone curious about the mineral content of their food. Just enter your portion, choose the preparation style, and the calculator will do the rest — complete with a step-by-step breakdown so you can verify the math.
🥜 Cashew Potassium Calculator
How to Use This Tool
Start by choosing the style of cashew that matches what you're about to eat — raw/unsalted or dry roasted. Cashew potassium values differ between these forms, so this choice matters for an accurate estimate. Next, enter the amount you'll consume. The calculator accepts weight in grams or ounces, so you can use a kitchen scale, a food scale, or even the net weight printed on the package. If you're working with common portions, the quick-fill pills below the input — one ounce, a handful, a quarter cup, and a full cup — will populate the weight for you and trigger the calculation automatically.
After pressing Calculate, the result panel shows three key numbers: total potassium in milligrams, the percentage of the Daily Value (4,700 mg) that portion supplies, and the potassium concentration per 100 g of the cashew type selected. A step-by-step breakdown beneath the results walks through the grams conversion and the multiplication, which is handy if you want to double-check the math or explain it to a student or client.
How Much Potassium Is in Cashews?
Cashews are among the higher-potassium nuts. According to USDA FoodData Central, raw cashew nuts provide approximately 660 mg of potassium per 100 g. Dry roasted cashews come in slightly lower at about 565 mg per 100 g, likely because moisture loss and processing alter the concentration of minerals in the final product. A single one-ounce handful of raw cashews — about 28 g — delivers roughly 185 mg of potassium, which is around 4% of the Daily Value. That may sound modest, but cashews also provide magnesium, iron, zinc, and healthy unsaturated fats, making them a nutrient-dense snack rather than a calorie-empty one.
For reference, the U.S. Food and Drug Administration sets the Daily Value for potassium at 4,700 mg for adults and children age four and older. The National Institutes of Health Office of Dietary Supplements notes that many adults fall short of the recommended intake, so tracking high-potassium plant foods can be a useful habit. Keep in mind that individual needs vary; athletes, people on certain medications, and those with kidney conditions may require different targets, so this calculator is an educational estimate rather than personal medical advice.
Learn more from the USDA FoodData Central and the NIH Potassium Fact Sheet.
Potassium Reference Table
The values below use raw cashews at 660 mg potassium per 100 g. Use the calculator for a precise figure for any custom weight or type.
| Serving | Approx. weight | Potassium | % DV* |
|---|---|---|---|
| 1 oz (about 18 cashews) | 28 g | 185 mg | 4% |
| 1/4 cup | 40 g | 264 mg | 6% |
| 1/3 cup | 53 g | 350 mg | 7% |
| 1/2 cup | 80 g | 528 mg | 11% |
| 1 cup whole | 113 g | 746 mg | 16% |
*Daily Value based on 4,700 mg.
Worked Examples
Example 1: One-ounce portion of raw cashews. Weight = 28.35 g. Potassium per 100 g = 660 mg. Calculation: 28.35 × 660 ÷ 100 = 187.1 mg. This is 187.1 ÷ 4,700 × 100 = 4.0% of the Daily Value.
Example 2: Quarter cup of dry roasted cashews. Assuming 40 g by weight and a per-100g value of 565 mg, the calculation is 40 × 565 ÷ 100 = 226 mg. That portion provides roughly 4.8% of the Daily Value.
Tips for Tracking Potassium
- Weigh solid foods rather than relying on volume; measuring cups can over- or under-fill with whole nuts.
- If you eat salted cashews, remember that potassium content is similar to unsalted, but sodium can be dramatically higher. Check the label.
- Pair cashews with other potassium-rich foods — like spinach, avocado, sweet potato, or yogurt — to reach daily targets more easily. You can compare greens with spinach potassium calculator or fermented drinks with kombucha potassium calculator.
- Raw cashews are great for adding potassium to smoothies and homemade nut milk; don't forget to count the nutrient contribution of the whole recipe.
Frequently Asked Questions
Are roasted cashews really lower in potassium? Dry roasted cashews show about 565 mg per 100 g in USDA data, versus 660 mg for raw nuts. The difference is modest and can vary by brand, oil, and salt content, so use the value printed on the nutrition label when available.
Can I use this calculator for cashew butter? Cashew butter generally has a similar potassium concentration per 100 g, but the moisture and added ingredients change the exact value. This tool is best used for whole, plain cashews.
What if I eat 200 g of cashews? Raw cashews would give you about 1,320 mg of potassium — around 28% of the Daily Value. Keep portion size in mind, since 200 g also supplies a large number of calories.
Why do I need potassium? Potassium supports nerve signaling, muscle contraction, and fluid balance. The National Institutes of Health recommend most adults aim for about 2,600–3,400 mg per day from food, though the FDA's Daily Value label uses 4,700 mg as a reference for general guidance.