Rolled Oats Cups to Grams Converter
Convert rolled oats between cups and grams instantly, either direction.
1 cup of rolled oats = 90g (old-fashioned rolled oats, spooned into the cup)
Type in either box — the other updates automatically.
How This Conversion Works
Grams = cups × 90 (the standard weight of 1 cup of old-fashioned rolled oats). Cups = grams ÷ 90.
Worked example
A recipe calls for 100g of rolled oats.
100 ÷ 90 = 1.1111 cups
Frequently Asked Questions
How many grams is a cup of rolled oats?
1 cup of old-fashioned rolled oats is 90 grams.
What should I know about measuring rolled oats?
This conversion is for old-fashioned rolled oats, and this conversion is for old-fashioned rolled oats — quick oats are cut smaller and pack more densely, so they weigh somewhat more per cup, and steel-cut oats are denser still.
Should I use a kitchen scale instead of cups?
For baking specifically, yes if precision matters — weight doesn't vary with how tightly an ingredient is packed, so it's more consistent than volume measurement. This converter helps translate a cup-based recipe to weight, or a weight-based recipe back to cups.
Rolled Oats Conversion Chart
Every value below uses 1 cup of rolled oats = 90g (old-fashioned rolled oats, spooned into the cup). Cups are rounded to two decimals; 0.33 is a third of a cup, 0.67 is two-thirds.
| Grams of rolled oats | Cups |
|---|---|
| 50 grams | 0.56 cups |
| 100 grams | 1.11 cups |
| 150 grams | 1.67 cups |
| 200 grams | 2.22 cups |
| 250 grams | 2.78 cups |
| 300 grams | 3.33 cups |
| 400 grams | 4.44 cups |
| 500 grams | 5.56 cups |
| Cups of rolled oats | Grams |
|---|---|
| 1/4 cup | 22.5 g |
| 1/3 cup | 30 g |
| 1/2 cup | 45 g |
| 2/3 cup | 60 g |
| 3/4 cup | 67.5 g |
| 1 cup | 90 g |
| 1 1/2 cups | 135 g |
| 2 cups | 180 g |
| 3 cups | 270 g |