🟢 Safe
Oxalate <25 mg/serving
🟡 Caution
Oxalate 25-99 mg/serving
🔴 Avoid
Oxalate ≥100 mg/serving
🟢

Flour, Chestnut

🟢 Low Oxalate — Low Oxalate
10 mg oxalate / serving
Serving: 1/4 cup (21 g) | Per 100 g: 49 mg
✓ Lab-Verified Data Oxalate values from Harvard T.H. Chan SPH Oxalate Database (2024), measured via ion chromatography. This site is a dietary reference tool, not a medical resource.

📊 Nutrition at a Glance

10 mg
Oxalate / serving
Low Oxalate
0 mg
Sodium / 100g
Low Na
5.3 g
Protein / 100g
Tier 1
55 mg
Calcium / 100g
Tier 1

Flavor variants in a product family share the base profile, and the oxalate table follows the base more than the flavoring. Chestnut Flour measures 10 mg per serving, in the middle of the family range. The useful reading is the family spread: if the range is narrow, flavor choice is free; if it is wide, the flavor with the lower measured value is the easy win. Related forms in this family: Tapioca Flour Flour (9 mg), Cornmeal Flour (10 mg), Oat Flour (8 mg).

📏 Oxalate by Serving Size

ServingWeightOxalateVerdict
1/4 cup21 g10 mg Low Oxalate
2 x 1/4 cup42 g20 mg Low Oxalate
½ x 1/4 cup10 g5 mg Low Oxalate

🏷️ Tags

Nuts & Seeds 🟢 Oxalate Safe Low Oxalate Plant-Based

🟢 See all Nuts & Seeds rated Safe for kidney stones →

🔗 Related Foods

❓ Frequently Asked Questions

Is Flour safe for kidney stones?

Yep, you're good. Flour clocks in at 10 mg oxalate per 1/4 cup — way under the 25 mg cutoff. Eat it without the stress. Measured by Harvard, not guessed.

What's the oxalate content of Flour?

The lab result: 10 mg per 1/4 cup (21g serving). That's 49 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.

Is Flour low or high oxalate?

It's low. 10 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 much sodium does Flour have?

Low sodium: 0 mg/100g. That's a non-issue for kidney stones. Just don't undo it by drowning it in salt during cooking.

🔍 Explore More About This Food

📚 Data Sources

Oxalate: Harvard T.H. Chan School of Public Health (2024) via OHF. Nutrition: USDA FoodData Central (SR Legacy 2018 & Foundation Foods).

📖 Key Scientific References

Taylor EN, Curhan GC. Oxalate intake and the risk for nephrolithiasis. J Am Soc Nephrol. 2007;18(7):2198-2204. PMID: 17538185
Borghi L, Schianchi T, Meschi T, et al. Comparison of two diets for the prevention of recurrent stones in idiopathic hypercalciuria. N Engl J Med. 2002;346(2):77-84. DOI: 10.1056/NEJMoa010369
Fink HA, Akornor JW, Garimella PS, et al. Diet, fluid, or supplements for secondary prevention of nephrolithiasis. Eur Urol. 2009;56(1):72-80. DOI: 10.1016/j.eururo.2009.03.031
Ferraro PM, Taylor EN, Gambaro G, Curhan GC. Dietary and lifestyle factors for primary prevention of nephrolithiasis. BMC Nephrol. 2020;21(1):267. PMID: 32652950
Pearle MS, Goldfarb DS, Assimos DG, et al. Medical management of kidney stones: AUA guideline. J Urol. 2014;192(2):316-324. DOI: 10.1016/j.juro.2014.05.006
Liebman M, Costa G. Effects of calcium and magnesium on urinary oxalate excretion after oxalate loads. J Urol. 2000;163(5):1565-1569. PMID: 10751889
Holmes RP, Assimos DG. The impact of dietary oxalate on kidney stone formation. Urol Res. 2004;32(5):311-316. DOI: 10.1007/s00240-004-0437-3
Lin BB, Lin ME, Huang RH, et al. Dietary treatment and fluid intake for prevention of recurrent calcium stones. PLoS One. 2021;16(4):e0250257. PMID: 33872340
This is dietary reference information, NOT medical advice. Talk to your doctor or a registered dietitian before changing your diet. Oxalate tolerance varies by person, stone type, and medication.