Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 cup | 151 g | 1 mg | Safe |
| 2 x 1 cup | 302 g | 2 mg | Safe |
| ½ x 1 cup | 75 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Fruits rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid Grapes if I have kidney stones?
No red flags here. Just 1 mg per 1 cup — well below the 25 mg danger line. You can keep Grapes in your regular rotation. Data comes from Harvard (2024).
How much oxalate is in Grapes?
The lab result: 1 mg per 1 cup (151g serving). That's 0 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is Grapes high in oxalates?
It's low. 1 mg per 1 cup is well under the 25 mg danger line. Grapes is not the food you need to worry about.
What are the best low-oxalate alternatives to Grapes?
Don't give up the whole category — just pick a safer member of it. The green foods in the related section all work as substitutes for Grapes with a fraction of the oxalate.
How reliable is the data for Grapes?
The 1 mg oxalate figure is direct from Harvard's lab — measured, not estimated. The sodium/protein/calcium numbers aren't fully matched yet. When they are, we'll update.