1 cup Oats to Grams
1 cup of rolled oats is a common oatmeal, cookie, and granola amount.
Quick Answer
1 cup of oats equals:
Rolled oats are light and flaky, so they weigh much less per cup than flour or sugar.
Cups to Grams Converter
Quick select
1 cup of Oats is about 90 grams, using a 236.588 millilitre cup.
See the full 1 cup to grams guide →
US customary cup (236.588ml) · 90g per cup
Dedicated conversion guides use the default US customary cup.
Applies to this page only — the database value (90g per US cup) is unchanged.
Quick conversions:
How This Conversion Works
The formula is cups times grams per cup. For oats, 1 cup x 90g per cup = 90g.
To compare this amount across other ingredients, see 1 cup to grams.
More Oats Cup Conversions
Frequently Asked Questions
How many grams is 1 cup of oats?
1 cup of oats weighs about 90 grams, using 90g per cup.
How many grams are in 1 cup of oats?
One US cup of oats weighs about 90 grams.
Should I weigh oats instead of using cups?
For baking, weighing is more consistent. Cup measures are useful when you do not have a scale, but density and measuring technique can change the result.