Is ketchup high in oxalate?

No. Very low, 1.5 mg per 1 tbsp

Range 1.5 to 1.5 mg across 1 study, 17 g serving

0 mg50 mg = a day60 mg+

Ketchup is low in oxalate: about 1.5 mg per 1 tbsp, which is 3% 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 17 g serving (1 tbsp). 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
1.5 mg	8.82 mg	Ketchup	Harvard T.H, 2023

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

Other sauces and condiments, lowest first

A Mayonnaise 0 mg per 1 tbsp A Sugar 0 mg per 1 tsp A Italian dressing <1 mg per 1 1/2 tbsp A Jam <1 mg per 1 tbsp A Pancake syrup <1 mg per 1 tbsp A Mustard <1 mg per 1 tsp

All sauces and condiments on one chart