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How Many Grams in 1 Cup of Oats?

1 cup of old-fashioned rolled oats weighs 90 grams. Quick oats weigh ~100 grams.

Direct Answer:

1 US Cup of Rolled Oats (Old Fashioned) = 90 grams (3.17 oz)

Tablespoons: 16 tbsp Teaspoons: 48 tsp Measurement Condition: Dry flakes, uncompressed Bulk Density: 0.375 g/mL

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1 cups (1)

1 grams of Rolled Oats (Old Fashioned) equals approximately 1 cups (US Legal Cup (Nutrition)).

16.0 Tablespoons
48.0 Teaspoons
240.0 mL Volume (mL)
3.17 oz Ounces (Weight)

1 Cup of Rolled Oats Across International Cup Standards

Compare the weight of 1 cup across US Legal, US Customary, Metric, and UK Imperial cups.

Item / Measurement Weight Cups (US Standard) Tablespoons Teaspoons
US Legal Cup (Nutrition) (240 mL) 90g 1 cup (1.0 cups) 16.0 tbsp 48.0 tsp
US Customary Cup (236.588 mL) 89g 1 cup (1.0 cups) 16.0 tbsp 48.0 tsp
Metric Cup (250 mL) 94g 1 cup (1.0 cups) 16.0 tbsp 48.0 tsp
UK Imperial Cup (284.131 mL) 107g 1 cup (1.0 cups) 16.0 tbsp 48.0 tsp

Measurement & Technique Guide for Rolled Oats (Old Fashioned)

Steamed and rolled whole oat groats. Quick oats weigh slightly more per cup (~100g) due to smaller flake size.

Chef's Culinary Tip:

Because oat flakes create large air pockets in a measuring cup, weighing is crucial when making granola or oatmeal cookies.