Are pecans high in oxalate?

Moderately. Moderate, 16 mg per 1 oz (about 19 halves)

Range 16 to 16 mg across 1 study, 28 g serving

0 mg50 mg = a day60 mg+

Lower-oxalate swap: Pistachios, grade B, about 9 mg per 1 oz (about 49 nuts).

Pecans have a moderate amount of oxalate: about 16 mg per 1 oz (about 19 halves), which is 32% 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 28 g serving (1 oz (about 19 halves)). 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
16 mg	55.4 mg	oil roasted, unsalted	Harvard T.H, 2023
16 mg	56.07 mg	Oil roasted	Harvard T.H, 2023

By Oliver Silen · Data checked November 2, 2026 · Not medical advice

Other nuts and seeds, lowest first

A Coconut <1 mg per 1 tbsp dried A Flaxseed <1 mg per 1 tbsp ground A Sunflower seeds 2.9 mg per 1/4 cup B Pistachios 9 mg per 1 oz (about 49 nuts) C Walnuts 12 mg per 1 oz (about 14 halves) C Peanut butter 19 mg per 1 tbsp

All nuts and seeds on one chart