Potato vs Cucumber: Which Is Better for Kidneys?

Q: Which has more potassium, potato or cucumber?

Per 100 g, potato contains 425 mg and cucumber contains 147 mg of potassium.

Q: Is potato or cucumber better for kidney disease?

Based on CKD stage 3-4 daily limits, potato is rated moderate 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 21% for potato. See each food page for the full mineral profile.

Looking at the three rated minerals, Potato lands in the Moderate tier and Cucumber in the Kidney-friendly tier. The biggest gap is Potassium — Cucumber sits at 7% of the daily limit versus 21% for Potato.

Potato
Moderate Cucumber
Kidney-friendly

Phosphorus

70 mg

24 mg

Sodium

42 mg

2 mg

<1%

Potassium

425 mg

21%

147 mg

See Potato details See Cucumber details

Frequently asked questions

Which has more potassium, potato or cucumber?

Per 100 g, potato contains 425 mg and cucumber contains 147 mg of potassium.

Is potato or cucumber better for kidney disease?

Based on CKD stage 3-4 daily limits, potato is rated moderate 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 21% for potato. See each food page for the full mineral profile.