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Rolled oats in grams
One cup of rolled oats weighs 81 g, one decilitre 34 g, one tablespoon 5.1 g and one teaspoon 1.7 g. Reverse conversions for 100 g, 250 g and 500 g, plus a recipe scaler.
Volume to grams
| Measure | Grams |
|---|---|
| 1 US cup | 81 g |
| 1 dl (100 ml) | 34 g |
| 1 tablespoon | 5.1 g |
| 1 teaspoon | 1.7 g |
| ½ cup | 41 g |
| 1/3 cup | 27 g |
| ¼ cup | 20 g |
Grams to volume
| Weight | Cups | dl | Tablespoons | Teaspoons |
|---|---|---|---|---|
| 100 g | 1.23 cups | 2.92 dl | 19.8 tbsp | 59 tsp |
| 250 g | 3.09 cups | 7.30 dl | 49.4 tbsp | 148 tsp |
| 500 g | 6.17 cups | 14.60 dl | 98.8 tbsp | 296 tsp |
| 1000 g | 12.35 cups | 29.21 dl | 197.5 tbsp | 593 tsp |
Convert any amount
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About this figure
This weight comes from the USDA household measure. It assumes a level measure filled by the scoop-and-sweep method at room temperature. A heaped spoon, a packed cup or a humid kitchen changes the real weight — the difference is why every serious baking book asks for a scale.
Source: King Arthur Baking — ingredient weight chart · USDA FoodData Central — household measures · checked 2026-09-03
Frequently asked questions
How many grams is 1 dl of rolled oats?
34 g per decilitre (81 g per US cup × 100 ÷ 236.588).
How many grams is 1 cup of rolled oats?
81 g per level US cup, from the USDA household measure.
How many grams is a tablespoon of rolled oats?
About 5.1 g — one sixteenth of the cup weight. Level spoon, not heaped.
Is the rolled oats weight exact?
No — it is a published reference for level measures at room temperature. How you fill the measure and the ingredient's moisture change the real weight.
What it is worth nutritionally
See Rolled oats nutrition: 389 kcal per 100 g, 16.9 g protein, 66.3 g carbs and 6.9 g fat.
Water
237 g per cup · 100 g per dl
Milk (whole)
244 g per cup · 103 g per dl
Heavy cream
238 g per cup · 101 g per dl
Yogurt (plain)
245 g per cup · 104 g per dl
Sour cream
230 g per cup · 97 g per dl
Buttermilk
245 g per cup · 104 g per dl
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