Search any food and see how it affects your kidneys — phosphorus, sodium and potassium, rated against CKD daily limits in seconds. 6,887 foods, USDA data, always free.
Each rating is the highest of phosphorus / sodium / potassium as a percentage of the CKD stage 3-4 daily limit. Data from USDA FoodData Central; thresholds follow KDIGO/KDOQI guidance.
Is there a kidney-friendly foods list?
Yes — the database covers 6,887 foods rated against CKD stage 3-4 daily limits for phosphorus (1,000 mg), sodium (2,000 mg) and potassium (2,000 mg). Each rating is computed from USDA FoodData Central data and shown as a transparent percentage of the daily limit.
How are foods rated?
Each food's phosphorus, sodium and potassium content is compared to the daily limits. The highest of the three percentages decides the tier: below 15% is kidney-friendly, 15-25% moderate, 25-30% limit, above 30% higher risk. Ratings are data-only; they are not medical advice.
What counts as a low potassium food?
A food is listed as low potassium when it contains under 300 mg per 100 g, i.e. below 15% of the 2,000 mg daily limit. Browse the Low Potassium Foods tag for the full list sorted by rating.