Are kumquats high in oxalate?
A
No. Very low, 3.3 mg per 5 kumquats
One study at 3.3 mg, 95 g serving
0 mg50 mg = a day60 mg+
Kumquats are low in oxalate: about 3.3 mg per 5 kumquats, which is 7% of the 50 mg a day many stone clinics aim for, or 3% 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 95 g serving (5 kumquats). 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 |
|---|---|---|---|
| 3.3 mg | 3.5 mg | Raw (n=1) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
By Oliver Silen · Data checked November 2, 2026 · Not medical advice