Are crackers high in oxalate?
B
No. Low, 5.1 mg per 5 crackers
One study at 5.1 mg, 16 g serving
0 mg50 mg = a day60 mg+
Crackers are low in oxalate: about 5.1 mg per 5 crackers, which is 10% of the 50 mg a day many stone clinics aim for, or 5% 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 16 g serving (5 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 |
|---|---|---|---|
| 5.1 mg | 31.87 mg | Refined grain | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice