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How many cups is 1 ounce of rolled oats?

1 oz = 0.31 cup

One level US cup of rolled oats weighs 90 g (3.2 oz). A tablespoon is 5.6 g. Per 100 g: 379 calories and 13.2 g protein.

Your amount

0.31 cup1 ounce
107Calories
3.7 gProtein

Conversion chart

Rolled Oats: ounces to cups
ouncescupsCaloriesProtein
1 oz0.31 cup1073.7 g
2 oz0.63 cup2157.5 g
4 oz1.3 cup43015 g
8 oz2.5 cup86029.9 g
16 oz5 cup1,71959.9 g

How to measure

Fluff it, spoon it into the cup, and sweep the top flat with the back of a knife. Scooping straight from the bag packs it down and can add 20 to 30% extra.

Pour loosely into the cup and level. Do not press down.

Common questions

How many cups is 1 ounce of rolled oats?

1 ounce of rolled oats = 0.31 cup. Pour loosely into the cup and level. Do not press down.

Is this a level or heaped ounce?

Level. Heaped spoons and packed cups can weigh 20 to 30% more.

Why does my package say something different?

Brands grind and pack differently. For baking, a kitchen scale is always more accurate than cups.