Are olives high in oxalate?
B
No. Low, 6.1 mg per 5 large olives
Range 2.2 to 7.3 mg across 2 studies, 16 g serving
0 mg50 mg = a day60 mg+
Olives are low in oxalate: about 6.1 mg per 5 large olives, which is 12% of the 50 mg a day many stone clinics aim for.
Where this number comes from
Each row is one published measurement, converted to a 16 g serving (5 large olives). 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 |
|---|---|---|---|
| 2.2 mg | 13.9 mg | Black, canned (n=3) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| 6.1 mg | 37.88 mg | Black, canned | Harvard T.H, 2023 |
| 7.3 mg | 45.7 mg | Green, canned (n=2) | 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