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Know what's safe. Eat with confidence.

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.

6,887+
foods rated
12
categories
4
risk tiers
100%
free to use

Browse by category

Fruits346→Vegetables804→Grains & Starches778→Legumes & Nuts378→Dairy & Eggs263→Beverages278→Herbs & Spices60→Meat & Protein2,501→Snacks & Sweets408→Condiments & Oils436→Prepared Foods484→Dishes151→

How foods are rated

Kidney-friendly2,109 foods<15% of daily limitModerate2,624 foods15-25% of daily limitLimit608 foods25-30% of daily limitHigher risk1,546 foods>30% of daily limit

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.

Guides & patient education

CKD Diet Guidelines→ Kidney Failure Diet→ Stage 3 Diet Guide→ Stage 4 Diet Guide→ Dialysis Diet Guide→ Low Potassium Diet→

Latest from the blog

2026-08-21

Cruciferous Vegetables and CKD: Cauliflower, Broccoli and Cabbage, Rated on the Data

This week kidney dietitians in China published a widely shared recommendation: make cruciferous vegetables — cauliflower, broccoli, cabbage, kale and their re→2026-08-21

Five Colorful Vegetables for CKD: Bell Pepper, Blueberry, Red Cabbage, Zucchini, Cucumber

A kidney specialist in Taiwan made the rounds this week with a simple list: five colorful vegetables — bell pepper, blueberry, red cabbage, yellow zucchini an→2026-08-21

Boiling Vegetables Lowers Potassium: The Database Numbers Behind the Technique

The most repeated piece of cooking advice in kidney care is also the easiest to verify: boil vegetables, drain the water, and the potassium drops. This week b→2026-08-21

The Sodium in Prepared and Takeout Foods: 204 mg per 100 g on Average

Scanned across all 6,887 foods in the database, the prepared-foods category — frozen dinners, school-lunch items, and the ready-made end of the grocery store→2026-08-21

Processed Meats and CKD: Why Only 7% of Meat Foods Rate Friendly

Across all 6,887 foods in the database, the meat and protein category has one of the lowest friendly rates in the site: 7%. The reason is not the protein — le→View all blog articles→

Frequently asked questions

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.