Cups of Rolled Oats (Old-Fashioned) to Grams Converter
1 US cup of old-fashioned rolled oats weighs 90 grams. Use this tool to calculate exact gram weights for cup quantities specified in US, Metric, or UK baking recipes. Reference source: USDA FoodData Central / King Arthur Baking.
Interactive Rolled Oats (Old-Fashioned) Cup Calculator
Rolled Oats (Old-Fashioned) Cups to Grams Conversion Table (1/8 Cup to 3 Cups)
Exact gram weights for common baking cup volumes calculated across US Legal (240 ml), US Customary (236.59 ml), and Metric (250 ml) cup standards.
| Cup Volume | US Legal Cup (240 ml) | US Customary (236.59 ml) | Metric Cup (250 ml) | Weight in Ounces (oz) |
|---|---|---|---|---|
| 1/8 cup | 11 g | 11 g | 12 g | 0.40 oz |
| 1/4 cup | 23 g | 22 g | 24 g | 0.79 oz |
| 1/3 cup | 30 g | 30 g | 31 g | 1.06 oz |
| 1/2 cup | 45 g | 44 g | 47 g | 1.59 oz |
| 2/3 cup | 60 g | 59 g | 63 g | 2.12 oz |
| 3/4 cup | 68 g | 67 g | 71 g | 2.38 oz |
| 1 cup | 90 g | 89 g | 94 g | 3.17 oz |
| 1 1/4 cups | 113 g | 111 g | 118 g | 3.97 oz |
| 1 1/2 cups | 135 g | 133 g | 141 g | 4.76 oz |
| 1 3/4 cups | 158 g | 155 g | 165 g | 5.56 oz |
| 2 cups | 180 g | 177 g | 188 g | 6.35 oz |
| 2 1/2 cups | 225 g | 222 g | 235 g | 7.94 oz |
| 3 cups | 270 g | 266 g | 282 g | 9.52 oz |
🔬 Why Weight Accuracy Matters for Rolled Oats (Old-Fashioned)
Flaked oat groats create large air gaps in measuring cups.
💡 Best Measuring Technique
- Scoop lightly without crushing oat flakes.
Frequently Asked Questions: Rolled Oats (Old-Fashioned) Cups to Grams
How many grams is 1 cup of Rolled Oats (Old-Fashioned)?
1 US Legal Cup (240 ml) of rolled oats (old-fashioned) weighs 90 grams. 1 US Customary Cup (236.59 ml) weighs approx 89 grams, and 1 Metric Cup (250 ml) weighs 94 grams.
How many grams is 1/2 cup of Rolled Oats (Old-Fashioned)?
1/2 US Legal Cup of rolled oats (old-fashioned) weighs 45 grams.
How do I convert cups of Rolled Oats (Old-Fashioned) to grams on a scale?
Multiply the number of cups in your recipe by 90g. For example, 1.5 cups × 90g = 135 grams.