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How many grams is one cup of rolled oats?

1 cup of rolled oats ≈ 90 g

Because one US cup of rolled oats weighs about 90 grams, one cup of it is roughly 90 grams. Rolled oats are flaky and light — never press them down into the cup.

Recipes that list rolled oats in cups assume an average density. The figure above is a sensible typical value; if your recipe is sensitive, weigh on a kitchen scale — see our methodology.

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Rolled oats conversion chart

Rolled oats — cups to grams
Cups	Grams	Ounces	Tablespoons
⅛ cup	11.25 g	0.397 oz	2
¼ cup	22.5 g	0.794 oz	4
⅓ cup	30 g	1.06 oz	5.33
½ cup	45 g	1.59 oz	8
⅔ cup	60 g	2.12 oz	10.67
¾ cup	67.5 g	2.38 oz	12
1 cup	90 g	3.17 oz	16
1¼ cups	112.5 g	3.97 oz	20
1½ cups	135 g	4.76 oz	24
2 cups	180 g	6.35 oz	32
3 cups	270 g	9.52 oz	48

Other rolled oats conversions

100 g to cups 200 g to cups 250 g to cups 500 g to cups ¼ cup to grams ½ cup to grams 2 cups to grams

← Rolled oats converter All ingredients Cups to grams chart

* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.