Is banana high in oxalate?
B
No. Low, 9 mg per 1 medium banana
Range 8 to 10 mg across 2 studies, 118 g serving
0 mg50 mg = a day60 mg+
Banana is low in oxalate: about 9 mg per 1 medium banana, which is 18% of the 50 mg a day many stone clinics aim for, or 9% of the 100 mg others allow.
50 or 100 mg a day: which target is yours
Why sources disagree on banana
The 2 studies here run from 8 to 10 mg per 1 medium banana, measured between 2002 and 2023. Variety, growing conditions and lab method all move the number.
Where this number comes from
Each row is one published measurement, converted to a 118 g serving (1 medium banana). 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 |
|---|---|---|---|
| 8 mg | 6.8 mg | Raw (n=7) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| 10 mg | 8.73 mg | Raw | Harvard T.H, 2023 |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice