Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
How the form changes the number: preparation is the real variable across this family. Boiling leaches a meaningful share of soluble oxalate into the cooking water — commonly 30-50% for plant foods — while raw and dry-heat forms keep essentially all of it, so the same base food can land in different brackets depending on how it is cooked. This page tracks String Beans at 8 mg per serving, in the middle of the family range. Related forms in this family: Mung Beans (3 mg), Lima or Butter Beans (10 mg), Beans Green (15 mg).
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1/2 cup | 65 g | 8 mg | Low Oxalate |
| 2 x 1/2 cup | 130 g | 16 mg | Low Oxalate |
| ½ x 1/2 cup | 32 g | 4 mg | Low Oxalate |
🏷️ Tags
🟢 See all Legumes rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid Beans if I have kidney stones?
It's fine. Beans has 8 mg of oxalate per 1/2 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 Beans?
One 1/2 cup of Beans = 8 mg oxalate. Scale it up to 100g and you're at 12 mg. Direct measurement from Harvard, 2024. About as reliable as food data gets.
Is Beans high in oxalates?
Definitely low. 8 mg oxalate per 1/2 cup. That's the green zone. No restrictions needed for this food.
What are the best low-oxalate alternatives to Beans?
Plenty of options. Scroll down to Related Foods — every 🟢 green item there is a lower-oxalate alternative to Beans. Same food group, way less oxalate.
How reliable is the data for Beans?
The oxalate number for Beans — 8 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.