Cups to Grams / Ingredients / Rolled oats
1 Cup Rolled Oats in Grams (81 g)
1 cup of rolled oats weighs 81 g (2.86 oz), according to USDA FoodData Central. That makes 1 tablespoon 5.1 g and 1 teaspoon 1.7 g.
Rolled oats1 cup
81g
- Ounces
- 2.86 oz
- 1 tbsp
- 5.1 g
- 1 tsp
- 1.7 g
- Source
- USDA FDC #173904
Convert another amount of rolled oats in the calculator, including grams back to cups.
Rolled oats cups to grams chart
| Amount | Grams | Ounces |
|---|---|---|
| 1/8 cup | 10.1 g | 0.36 oz |
| 1/4 cup | 20.3 g | 0.71 oz |
| 1/3 cup | 27 g | 0.95 oz |
| 1/2 cup | 40.5 g | 1.43 oz |
| 2/3 cup | 54 g | 1.9 oz |
| 3/4 cup | 60.8 g | 2.14 oz |
| 1 cup | 81 g | 2.86 oz |
| 1 1/2 cups | 122 g | 4.29 oz |
| 2 cups | 162 g | 5.71 oz |
| 3 cups | 243 g | 8.57 oz |
| 1 tbsp | 5.1 g | 0.18 oz |
| 2 tbsp | 10.1 g | 0.36 oz |
| 1 tsp | 1.7 g | 0.06 oz |
| 1/2 tsp | 0.8 g | 0.03 oz |
Each row is USDA’s 1-cup weight (81 g) times the amount. A tablespoon is 1/16 cup and a teaspoon is 1/48 cup, so 1 tbsp = 81 ÷ 16 = 5.1 g. Ounces are grams ÷ 28.3495.
Rolled oats grams to cups
| Weight | Cups | Closest measure |
|---|---|---|
| 25 g | 0.31 | 1/4 cup + 2 3/4 tsp |
| 50 g | 0.62 | 1/2 cup + 1 tbsp + 2 3/4 tsp |
| 100 g | 1.23 | 1 cup + 3 tbsp + 2 1/4 tsp |
| 200 g | 2.47 | 2 1/3 cups + 2 tbsp + 1/2 tsp |
| 250 g | 3.09 | 3 cups + 1 tbsp + 1 1/4 tsp |
| 500 g | 6.17 | 6 cups + 2 tbsp + 2 1/4 tsp |
Cups = grams ÷ 81. The last column rounds to the nearest 1/4 teaspoon using a standard set of cups and spoons.
What USDA lists for rolled oats
| USDA portion | Grams | Ounces |
|---|---|---|
| 1 cup | 81 g | 2.86 oz |
| 1/3 cup | 27 g | 0.95 oz |
Source: USDA FoodData Central, SR Legacy, FDC ID 173904: “Cereals, oats, regular and quick, not fortified, dry”, published 4/1/2019. Portion used for this page: “1 cup” = 81 g. Cups to spoons: USDA ARS measure equivalents (1 cup = 16 tbsp = 48 tsp).
Measuring rolled oats by the cup
Spoon or pour into a dry measuring cup and strike off the excess with a straight edge, as NIST suggests. Shaking or tapping the cup settles it and adds weight.