Is grapefruit high in oxalate?

Moderately. Moderate, 13 mg per 1/2 grapefruit

Range 13 to 13 mg across 1 study, 123 g serving

0 mg50 mg = a day60 mg+

Grapefruit has a moderate amount of oxalate: about 13 mg per 1/2 grapefruit, which is 26% 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 123 g serving (1/2 grapefruit). 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
13 mg	10.73 mg	Raw	Harvard T.H, 2023

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

Other fruits, lowest first

A Passion fruit <1 mg per 1 fruit A Watermelon <1 mg per 1 cup diced A Dried cranberries <1 mg per 1/4 cup A Plum <1 mg per 1 plum A Apricot 1.3 mg per 1 apricot A Mango 1.5 mg per 1 cup sliced

All fruits on one chart