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 |
|---|---|---|---|
| 1/4 cup | 37 g | 6 mg | Safe |
| 2 x 1/4 cup | 74 g | 12 mg | Safe |
| ½ x 1/4 cup | 18 g | 3 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?
It's fine. Grapes has 6 mg of oxalate per 1/4 cup. That's low enough that kidney stone patients don't really need to worry about it. Harvard did the measuring, not us.
How much oxalate is in Grapes?
6 mg — that's the oxalate in a standard 1/4 cup of Grapes. For the 100g comparison freaks: 9 mg. Source is Harvard's 2024 food analysis project.
Is Grapes high in oxalates?
It's low. 6 mg per 1/4 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?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Grapes. Grab one of those and you dodge the oxalate while keeping similar flavors.
How much sodium does Grapes have?
7 mg sodium per 100g in Grapes. Well under the 460 mg threshold. One less thing on your kidney stone checklist.