Rolled vs. Quick Oats: Can I swap them?

By weight? Yes. By volume? No. Quick oats are cut smaller and pack tighter, so 1 cup of quick oats weighs MORE than 1 cup of rolled oats. Always swap by grams (e.g., 100g for 100g).

Rolled Oats (Old Fashioned): How Many Grams in a Cup?

By Fidamen-Chefsolver Team | Reviewed by Ugo Candido | Updated July 14, 2026

Convert rolled oats from cups to grams accurately. Learn why a cup can vary from 90g to 120g, view our full reference table, and see how to swap with quick oats.

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Ingredient

US cup = 236.588 mL
1 tbsp = 14.787 mL
1 tsp = 4.929 mL

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Based on the measured density of Rolled Oats (Old Fashioned) (0.38 g/mL). Values rounded; real weight varies by brand, packing and temperature. Full sources in the tool on ChefSolver.

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Reference table

Rolled Oats (Old Fashioned) — cups to grams
Cups	g
1/8 cup	11
1/4 cup	22
1/3 cup	30
1/2 cup	45
2/3 cup	60
3/4 cup	67
1 cup	90
1 1/2 cups	135
2 cups	180

FAQ

Rolled vs. Quick Oats: Can I swap them?: By weight? Yes. By volume? No. Quick oats are cut smaller and pack tighter, so 1 cup of quick oats weighs MORE than 1 cup of rolled oats. Always swap by grams (e.g., 100g for 100g).

Rolled Oats (Old Fashioned): How Many Grams in a Cup?

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