Cooking unit converter
Rolled oats cups to grams converter
Use this rolled oats cups to grams converter when a recipe gives volume but you want the repeatability of a kitchen scale. The page is pre-filled with rolled oats and uses 89 grams per US cup as the working density, so cup, tablespoon, teaspoon, milliliter, fluid ounce, and gram conversions stay tied to the ingredient instead of a generic liquid assumption. Rolled oats leave air gaps in a cup, so they weigh far less than flour or sugar at the same volume. It is most useful for oatmeal, granola, cookies, bars, crumble toppings, and breakfast batch prep, especially when scaling a recipe up or down before mixing.
Quick conversion table
| US cup | Gram |
|---|---|
| 1 cup | 89 g |
| 5 cup | 445 g |
| 10 cup | 890 g |
| 25 cup | 2,225 g |
| 50 cup | 4,450 g |
| 100 cup | 8,900 g |
Rolled oats conversion data
- Grams per cup
- 89 g
- Grams per tablespoon
- 5.56 g
- Grams per teaspoon
- 1.85 g
- Best for
- oatmeal, granola, cookies, bars, crumble toppings, and breakfast batch prep
- Measuring note
- Rolled oats leave air gaps in a cup, so they weigh far less than flour or sugar at the same volume.
- Source
- King Arthur Baking Ingredient Weight Chart, accessed 2026-05-06
Useful notes
Why ingredient matters
A cup of flour and a cup of butter do not weigh the same. Pick an ingredient when converting to or from grams.
Common kitchen units
Cups, tablespoons, teaspoons, milliliters, fluid ounces, and grams are kept in one fast form.
Frequently asked questions
How many grams are in 1 cup of rolled oats?
This page uses 89 grams for 1 US cup of rolled oats. Cup weights can vary by brand, grind, moisture, and packing method, so weigh the ingredient when precision matters.
Can I convert rolled oats tablespoons and teaspoons to grams here?
Yes. Choose tablespoons or teaspoons in the unit menu and keep rolled oats selected as the ingredient. The calculator uses the same ingredient density for the smaller volume units.
Why is rolled oats different from water in a cooking converter?
Rolled oats has its own density, so a cup does not weigh the same as a cup of water. That is why this page keeps a dedicated ingredient setting instead of using one universal cups-to-grams factor.
What measuring note should I remember for rolled oats?
Rolled oats leave air gaps in a cup, so they weigh far less than flour or sugar at the same volume.