Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
Cucumbers are one of the safest foods in existence for kidney stone patients. Under 5 mg oxalate per cup, and they're 96% water — so they actively contribute to your hydration while adding almost nothing to your oxalate load. They're cheap, require no cooking, and work in salads, sandwiches, or as a standalone snack. If you're looking for a vegetable with literally zero downsides for kidney stones, cucumbers are it. The only possible concern is eating them with high-sodium dips or dressings, which is a sodium issue — not an oxalate issue. Cucumbers themselves are blameless.
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 cup, sliced | 120 g | 5 mg | Safe |
| 2 x 1 cup, sliced | 240 g | 10 mg | Safe |
| ½ x 1 cup, sliced | 60 g | 2.5 mg | Safe |
🏷️ Tags
🟢 See all Vegetables rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Can I eat Cucumbers with kidney stones?
Don't overthink this one. Cucumbers has 5 mg oxalate per 1 cup, sliced. That's solidly safe territory for kidney stones. The number is from Harvard's latest lab work.
What's the oxalate content of Cucumbers?
The lab result: 5 mg per 1 cup, sliced (120g serving). That's 4 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is Cucumbers high in oxalates?
Definitely low. 5 mg oxalate per 1 cup, sliced. That's the green zone. No restrictions needed for this food.
What can I eat instead of Cucumbers?
Plenty of options. Scroll down to Related Foods — every 🟢 green item there is a lower-oxalate alternative to Cucumbers. Same food group, way less oxalate.
How reliable is the data for Cucumbers?
Oxalate: very reliable (Harvard 2024 lab measurement). Other nutrients: still being matched to USDA data. The oxalate figure is what matters for a kidney stone decision, and that one's solid.