Tomato vs Cucumber: Which Is Better for Kidneys?

Q: Which has more potassium, tomato or cucumber?

Per 100 g, tomato contains 3427 mg and cucumber contains 147 mg of potassium.

Q: Is tomato or cucumber better for kidney disease?

Based on CKD stage 3-4 daily limits, tomato is rated higher risk and cucumber is rated kidney-friendly. Ratings reflect mineral load per 100 g only — individual advice should come from your healthcare team.

Q: What is the main difference for a CKD diet?

The largest difference is potassium: cucumber sits at 7% of the daily limit versus 171% for tomato. See each food page for the full mineral profile.

For a kidney-friendly diet the question is mineral load: Tomato is Higher risk, Cucumber is Kidney-friendly. If you are choosing between them, Cucumber leaves more room in the daily allowance — the Potassium gap is 7% versus 171%.

Tomato
Higher risk Cucumber
Kidney-friendly

Phosphorus

356 mg

36%

24 mg

Sodium

107 mg

2 mg

<1%

Potassium

3427 mg

171%

147 mg

See Tomato details See Cucumber details

Frequently asked questions

Which has more potassium, tomato or cucumber?

Per 100 g, tomato contains 3427 mg and cucumber contains 147 mg of potassium.

Is tomato or cucumber better for kidney disease?

Based on CKD stage 3-4 daily limits, tomato is rated higher risk and cucumber is rated kidney-friendly. Ratings reflect mineral load per 100 g only — individual advice should come from your healthcare team.

What is the main difference for a CKD diet?

The largest difference is potassium: cucumber sits at 7% of the daily limit versus 171% for tomato. See each food page for the full mineral profile.