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 oz | 28 g | 1 mg | Safe |
| 2 x 1 oz | 56 g | 2 mg | Safe |
| ½ x 1 oz | 14 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Nuts & Seeds rated Safe for kidney stones →
⚖️ Compare this food: · vs Nuts · vs Pine nuts →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid Chestnuts if I have kidney stones?
It's fine. Chestnuts has 1 mg of oxalate per 1 oz. 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 Chestnuts?
One 1 oz of Chestnuts = 1 mg oxalate. Scale it up to 100g and you're at 0 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.
Is Chestnuts a high-oxalate food?
It's low. 1 mg per 1 oz is well under the 25 mg danger line. Chestnuts is not the food you need to worry about.
What are the best low-oxalate alternatives to Chestnuts?
Look at the 'Safe Alternatives' section right below this FAQ. Those foods are all under 25 mg oxalate per serving and in the same category as Chestnuts. Pick from those.
How reliable is the data for Chestnuts?
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.