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How Much Oxalate Is in Butter (Salted)?

Per serving, Butter (Salted) comes in at 0 mg of oxalate — and 0 mg per 100g when scaled. Both figures are from Harvard T.H. Chan SPH's 2024 laboratory analysis, the reference standard for oxalate content. With the 25 mg per serving line in mind, that places Butter (Salted) in the Safe group for kidney stone diets.
✓ Lab-Verified Data Based on Harvard T.H. Chan SPH oxalate data (2024) and NKF/AUA dietary guidelines.
0
mg oxalate
per serving
Food: Butter, salted
Serving: 1 tbsp (14 g)
Verdict: 🟢 Safe
Per 100g: 0 mg
Data: Harvard T.H. Chan SPH (2024)
🔄 Lower-Oxalate Alternatives
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💡 What This Means for Your Diet

In practical terms, Butter (Salted) is a low-risk food for kidney stone patients. Its 0 mg oxalate per serving stays under the 25 mg line, so it can appear in your regular rotation without extra calculation. As always, staying hydrated and getting dietary calcium supports stone prevention.

📊 How Butter (Salted) Compares

Among dairy & eggs, Butter (Salted) sits well below the category average of 3 mg. For context, 87 out of 91 dairy & eggs (95%) are rated 🟢 Safe (under 25 mg oxalate/serving). The average dairy & eggs in our database has 3 mg oxalate per serving — which means Butter (Salted) is 100% below the category norm. Within its specific category, Butter (Salted) ranks among the lower-oxalate options. This context matters because two 'Safe' foods can have very different oxalate levels — one might have 5 mg while another has 24 mg. Both are Safe, but the first gives you more dietary flexibility. Browse all dairy & eggs rated Safe to compare within the same verdict level.

❓ Related Questions

Why does oxalate per 100g matter?

Normalizing to 100 grams removes serving-size differences, so you can judge which food is genuinely denser in oxalate. It matters most when you eat a bigger or smaller portion than the listed serving. For context, Butter (Salted) measures 0 mg per 1 tbsp, rated Safe.

How accurate is the oxalate measurement?

Harvard's 2024 analysis used ion chromatography — the gold standard for oxalate measurement. These are direct lab values, not estimates or database calculations. Variability exists between samples, but this is the most reliable reference available. For Butter (Salted), the measured oxalate value is 0 mg per 1 tbsp (Safe).

How does this compare to other foods?

Foods under 25 mg per serving are rated Safe. Foods between 25-99 mg are Caution. 100+ mg is Avoid. Check the food's category page on OxalateWatch to see how it compares to similar foods. For context, Butter (Salted) measures 0 mg per 1 tbsp, rated Safe.

Butter (Salted) full page 🟢 Safe foods Safe foods
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.