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 | 176 g | 1 mg | Safe |
| 2 x 1 cup | 352 g | 2 mg | Safe |
| ½ x 1 cup | 88 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Grains & Pasta rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid Udon noodles if I have kidney stones?
It's fine. Udon noodles has 1 mg of oxalate per 1 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 Udon noodles?
1 mg — that's the oxalate in a standard 1 cup of Udon noodles. For the 100g comparison freaks: 0 mg. Source is Harvard's 2024 food analysis project.
Is Udon noodles a high-oxalate food?
Low. 1 mg per 1 cup puts Udon noodles firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What can I eat instead of Udon noodles?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Udon noodles. Grab one of those and you dodge the oxalate while keeping similar flavors.
How reliable is the data for Udon noodles?
The oxalate number for Udon noodles — 1 mg per serving — is from Harvard's 2024 lab analysis. That part is solid. The USDA nutrition data (sodium, protein, calcium) is still being matched — we'll update when it's available.