Is winter squash high in oxalate?
A
No. Very low, 4 mg per 1/2 cup cooked
One study at 4 mg, 103 g serving
0 mg50 mg = a day60 mg+
Winter squash is low in oxalate: about 4 mg per 1/2 cup cooked, which is 8% of the 50 mg a day many stone clinics aim for, or 4% of the 100 mg others allow.
50 or 100 mg a day: which target is yours
Where this number comes from
Each row is one published measurement, converted to a 103 g serving (1/2 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 |
|---|---|---|---|
| 4 mg | 3.88 mg | Baked | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice