Are whole wheat crackers high in oxalate?
C
Moderately. Moderate, 15 mg per 6 crackers
One study at 15 mg, 28 g serving
0 mg50 mg = a day60 mg+
Lower-oxalate swap: Crackers, grade B, about 5.1 mg per 5 crackers.
Whole wheat crackers have a moderate amount of oxalate: about 15 mg per 6 crackers, which is 30% of the 50 mg a day many stone clinics aim for, or 15% 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 28 g serving (6 crackers). 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 |
|---|---|---|---|
| 15 mg | 53.57 mg | Whole wheat | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice