One-Third Cup of Steel-Cut Oats in Grams
1/3 cup of steel-cut oats weighs 53.33g (1.88 oz, 80ml) according to USDA FoodData Central (1 cup steel-cut oats = 160g, spooned and leveled method). 1/3 cup = 0.3333 of a full cup (240ml). See the full conversion table below for all amounts from 1 tablespoon to 3 cups.
Steel-Cut Oats Cup-to-Gram Conversion Table
Full range from 1 tablespoon to 3 cups. The highlighted row shows 1/3 cup.
| Amount | Grams |
|---|---|
| 1 tbsp | 10g |
| 2 tbsp | 20g |
| 1/8 cup | 20g |
| 1/4 cup | 40g |
| 1/3 cupthis page | 53.33g |
| 1/2 cup | 80g |
| 2/3 cup | 106.67g |
| 3/4 cup | 120g |
| 1 cup | 160g |
| 1 1/4 cups | 200g |
| 1 1/2 cups | 240g |
| 1 3/4 cups | 280g |
| 2 cups | 320g |
| 2 1/2 cups | 400g |
| 3 cups | 480g |
Source: USDA FoodData Central (FDC ID: 173904). 1 US cup = 240ml. Values use spooned-and-leveled method.
1/3 Cup of Different Ingredients — Weight Comparison
1/3 cup of different ingredients varies widely in weight because each has a different density. This matters when substituting ingredients in recipes.
| Ingredient | 1/3 Cup (g) |
|---|---|
| Rolled Oats | 30g |
| Oat Flour | 30.67g |
| Steel-Cut Oatscurrent | 53.33g |
All values use USDA FoodData Central spooned-and-leveled method. Click any ingredient to see its full conversion table.
Measuring Steel-Cut Oats Accurately
Why weight matters: 1/3 cup of steel-cut oats can weigh anywhere from 45g to 64g depending on how you measure it. The USDA standard is 53.33g (spooned and leveled). Scooping directly from the container can add 10–20% extra weight, which affects recipe results — especially in baking.
About steel-cut oats density: Steel-cut oats: 1 cup = 160g — significantly denser than rolled oats (90g/cup). Cut from whole oat groats by steel blades, not rolled. Takes 20-30 minutes to cook. Chewier texture with lower glycemic index than rolled oats. Also called Irish oats or pinhead oats.
About 1/3 Cup as a Measurement
1/3 cup = 5 tablespoons + 1 teaspoon = 80ml. This unusual fraction appears in recipes that scale for 2 servings from a 3-serving base. It cannot be made from combining standard 1/4 and 1/8 cup measures without error.
One-third cup is common in yogurt parfait recipes, small-batch granola bars, and single-layer cake recipes scaled for 2 servings. It is exactly 80ml in metric volume.
Frequently Asked Questions
How many grams is 1/3 cup of steel-cut oats?
1/3 cup of steel-cut oats weighs 53.33 grams (1.88 oz, 80ml). Based on USDA FoodData Central: 1 cup steel-cut oats = 160g, so 1/3 cup = 160 × 0.333 = 53.33g.
Is 1/3 cup of steel-cut oats the same weight every time?
The weight can vary slightly depending on measuring technique. Spooned and leveled gives 53.33g. Scooped (packed) can be 10–20% heavier. Sifted gives a lighter weight. The USDA standard (spooned and leveled) of 53.33g is the most reliable baseline for recipes.
How do I accurately measure 1/3 cup of steel-cut oats?
For accuracy, use a kitchen scale and weigh 53.33g of steel-cut oats. If using measuring cups, spoon the steel-cut oats lightly into a 1/3 Cup measuring cup and level off the top with a straight edge. Avoid scooping directly from the container, which compacts the ingredient and adds extra weight.
How does 1/3 cup of steel-cut oats compare to other ingredients?
1/3 cup of different ingredients varies significantly: Rolled Oats = 30g, Oat Flour = 30.67g, Steel-Cut Oats = 53.33g. This is because each ingredient has a different density.