How to measure rolled oats
Quick oats are cut smaller and settle a little tighter, while steel-cut oats are dense pieces of grain and weigh much more per cup. That is why recipes give different cup amounts for each kind. For overnight oats and granola, a scale makes the ratio of oats to liquid repeatable from batch to batch.
Source: 89 grams per US cup is the weight per cup used by US baking charts such as King Arthur Baking’s ingredient weight chart. A US cup is about 237 milliliters.
Rolled oats: cups to grams chart
| Cups | Grams | Ounces |
|---|---|---|
| 1/8 cup | 11 g | 0.39 oz |
| 1/4 cup | 22 g | 0.78 oz |
| 1/3 cup | 30 g | 1.05 oz |
| 1/2 cup | 45 g | 1.57 oz |
| 2/3 cup | 59 g | 2.09 oz |
| 3/4 cup | 67 g | 2.35 oz |
| 1 cup | 89 g | 3.14 oz |
| 1 1/2 cups | 134 g | 4.71 oz |
| 2 cups | 178 g | 6.28 oz |
| 3 cups | 267 g | 9.42 oz |
| 4 cups | 356 g | 12.6 oz |
Tablespoons and teaspoons of rolled oats
Three teaspoons make a tablespoon and 16 tablespoons make a cup, so the spoon weights follow straight from the 89 grams per cup. Use level spoons, not heaped ones.
| Spoons | Grams |
|---|---|
| 1/4 tsp | 0.5 g |
| 1/2 tsp | 0.9 g |
| 1 tsp | 1.9 g |
| 1 tbsp | 5.6 g |
| 2 tbsp | 11 g |
| 3 tbsp | 17 g |
| 4 tbsp | 22 g |
Grams of rolled oats to cups
Going the other way, divide the grams by 89. A cup of rolled oats weighs 148 grams less than a cup of water, which is 237 grams.
| Grams | Cups | In the kitchen |
|---|---|---|
| 25 g | 0.28 cup | just over 1/4 cup |
| 50 g | 0.56 cup | just over 1/2 cup |
| 100 g | 1.12 cups | about 1 1/8 cups |
| 150 g | 1.69 cups | just over 1 2/3 cups |
| 200 g | 2.25 cups | about 2 1/4 cups |
| 250 g | 2.81 cups | just over 2 3/4 cups |
| 300 g | 3.37 cups | about 3 3/8 cups |
| 400 g | 4.49 cups | about 4 1/2 cups |
| 500 g | 5.62 cups | about 5 5/8 cups |
| 1,000 g | 11.24 cups | just under 11 1/4 cups |
Other pantry staples per cup
- Cocoa powder: 84 grams per cup
- White rice (uncooked): 185 grams per cup
- Chocolate chips: 170 grams per cup
- Peanut butter: 258 grams per cup
- Cornstarch: 112 grams per cup
- Table salt: 292 grams per cup
- Chopped walnuts: 113 grams per cup
For every ingredient in one place, open the cups to grams converter. The grams to ounces converter helps if your scale shows ounces, and the recipe scaler resizes the rest of the recipe.
Frequently asked questions
How many grams is 1/2 cup of rolled oats?
About 45 grams. A full cup is about 89 grams and 1/4 cup about 22 grams.
How many cups is 100 grams of rolled oats?
About 1.12 cups, about 1 1/8 cups. Divide the grams by 89 to get cups.
How many grams are in a tablespoon of rolled oats?
About 5.6 grams in a tablespoon and 1.9 grams in a teaspoon, measured level.
How much liquid do I need for a cup of rolled oats?
For stovetop oatmeal, about 2 cups of water or milk per cup of rolled oats gives a creamy bowl. Use less liquid if you like it thick.