How Much Oxalate Is in Soy milk (Unsweetened)?
mg oxalate
per serving
Serving: 1 cup (243 g)
Verdict: 🟢 Safe
Per 100g: 0.8 mg
Data: Harvard T.H. Chan SPH (2024)
In practical terms, Soy milk (Unsweetened) is a low-risk food for kidney stone patients. Its 2 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.
Among dairy & eggs, Soy milk (Unsweetened) sits 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 Soy milk (Unsweetened) is 40% below the category norm. Within its specific category, Soy milk (Unsweetened) 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.
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, Soy milk (Unsweetened) measures 2 mg per 1 cup, 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 Soy milk (Unsweetened), the measured oxalate value is 2 mg per 1 cup (Safe).
How does this compare to other foods?
The ratings split at 25 mg (Safe) and 100 mg (Avoid), with 25-99 mg in the Caution band. For context against similar foods, the category pages on OxalateWatch rank every item in that group by oxalate. Applied to Soy milk (Unsweetened): 2 mg oxalate per 1 cup — Safe per Harvard (2024).