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 | 36 g | 19 mg | Safe |
| 2 x 1/4 cup | 72 g | 38 mg | Caution |
| ½ x 1/4 cup | 18 g | 9.5 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 Flour if I have kidney stones?
It's fine. Flour has 19 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 Flour?
One 1/4 cup of Flour = 19 mg oxalate. Scale it up to 100g and you're at 54 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.
Is Flour low or high oxalate?
It's low. 19 mg per 1/4 cup is well under the 25 mg danger line. Flour is not the food you need to worry about.
What can I eat instead of Flour?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Flour. Grab one of those and you dodge the oxalate while keeping similar flavors.
How reliable is the data for Flour?
The oxalate number for Flour — 19 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.