How many grams in a cup of rolled oats?

The short answer first, then a table for every common measure and how to fill your cup so the numbers match.

Quick answer

1 US cup of rolled oats weighs about

81 g
Metric cup (250 mL)86 g
1 tablespoon5.1 g
1 teaspoon1.7 g

Cups of rolled oats to grams

CupsUS cupMetric cup
¼ cup20 g21 g
⅓ cup27 g29 g
½ cup41 g43 g
⅔ cup54 g57 g
¾ cup61 g64 g
1 cup81 g86 g
2 cups162 g171 g

Grams of rolled oats to cups

100 g1 ¼ cups
250 g3 ⅛ cups
500 g6.17 cups

US cups.

Measure it right

  1. 1Pour or scoopPour it into the cup, or scoop gently.
  2. 2Don’t shakeShaking settles it and adds weight.
  3. 3Level the topSweep a flat knife across the rim.

Regular or quick oats, dry.

Nutrition

PerCaloriesProteinCarbsFat
1 US cup30710.7 g54.8 g5.3 g
100 g37913.2 g67.7 g6.5 g
See calories and macros →

Common questions

Which cup size does my recipe use?

US recipes use 236.6 mL. Many Arab, UK and Australian recipes use a 250 mL metric cup, which holds about 86 g of rolled oats.

Is it better to weigh rolled oats?

Yes. A cup can hold more or less depending on how you fill it. A kitchen scale gives the same result every time.

Anything special about measuring rolled oats?

Regular or quick oats, dry.

Source: USDA FoodData Central, SR Legacy #173904 (1 cup = 81 g). Values are approximate.