Is parsley high in oxalate?
No. Low, 5.4 mg per 1 tbsp chopped
Range <1 to 11 mg across 3 studies, 4 g serving
Parsley is low in oxalate: about 5.4 mg per 1 tbsp chopped, which is 11% 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
Why sources disagree on parsley
The 3 studies here run from <1 to 11 mg per 1 tbsp chopped, 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 4 g serving (1 tbsp chopped). 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 |
|---|---|---|---|
| 0 mg soluble only* | 0.5 mg | Raw (n=8) | Santamaria P., Elia A., Serio F., Todaro E, 1999via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| <1 mg | 23.68 mg | Raw | Harvard T.H, 2023 |
| 3 mg soluble only* | 76 mg | Not stated (n=1) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| 5.4 mg | 136 mg | Not stated (n=2) | Hönow R., Hesse A, 2002via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
| 11 mg | 270.7 mg | Raw | Kim D.-J., Kim H., Kim M., Lee J, 2007via Foods 2023;12:3201, Table 5 (CC BY 4.0) |
* The study measured soluble oxalate only, which understates the total, so it's shown but doesn't set the grade.
By Oliver Silen · Data checked November 2, 2026 · Not medical advice