Is pasta high in oxalate?
Yes. High, 30 mg per 1 cup cooked
Range 17 to 42 mg across 2 studies, 140 g serving
Pasta is high in oxalate: about 30 mg per 1 cup cooked, which is 60% of the 50 mg a day many stone clinics aim for, or 30% of the 100 mg others allow.
If your doctor has put you on a low-oxalate diet, eat it with something high in calcium, like milk, yogurt or cheese. Calcium in the same meal binds oxalate in the gut, so less of it reaches your urine. How much calcium, and what if you don't eat dairy.
50 or 100 mg a day: which target is yours
Why sources disagree on pasta
The 2 studies here run from 17 to 42 mg per 1 cup cooked, measured between 2009 and 2023. They tested 2 preparations, and growing conditions, variety and lab method all move the number.
Where this number comes from
Each row is one published measurement, converted to a 140 g serving (1 cup cooked). The grade and the range use the rows prepared the way the serving is eaten, and take the middle. How the grades work.
| Per serving | Per 100 g | Preparation | Source |
|---|---|---|---|
| 17 mg | 11.79 mg | Spaghetti, cooked | Harvard T.H, 2023 |
| 42 mg | 30 mg | most products, as eaten (wet weight) | Liebman M, Okombo J, 2009 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice