Baking conversions
Rolled Oats: cups to grams
Rolled oats are flat flakes with a lot of air between them, so a cup is light for its bulk.
Rolled Oats cups to grams
| Cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 11 g | 0.4 oz |
| ¼ cup | 23 g | 0.79 oz |
| ⅓ cup | 30 g | 1.06 oz |
| ½ cup | 45 g | 1.59 oz |
| ⅔ cup | 60 g | 2.12 oz |
| ¾ cup | 68 g | 2.38 oz |
| 1 cup | 90 g | 3.17 oz |
| 1½ cups | 135 g | 4.76 oz |
| 2 cups | 180 g | 6.35 oz |
| 3 cups | 270 g | 9.52 oz |
| 4 cups | 360 g | 12.7 oz |
Rolled Oats grams to cups
| Grams | Cups | Tbsp |
|---|---|---|
| 25 g | 0.28 | 4.4 |
| 50 g | 0.56 | 8.9 |
| 100 g | 1.11 | 17.8 |
| 125 g | 1.39 | 22.2 |
| 150 g | 1.67 | 26.7 |
| 200 g | 2.22 | 35.6 |
| 250 g | 2.78 | 44.4 |
| 300 g | 3.33 | 53.3 |
| 400 g | 4.44 | 71.1 |
| 500 g | 5.56 | 88.9 |
Cup standards compared
Convert cooking volumes
The charts above cover weight. If you also need to move between cups, decilitres, millilitres and spoons, this converts any volume:
1 cup (US) in every unit
A US cup is 236.6 ml, a metric cup is 250 ml and a UK tablespoon is larger than a US one — so the system your recipe was written in matters. Pick the matching unit rather than assuming.
Questions
How many grams is 1 cup of rolled oats?
One US cup of rolled oats weighs 90 grams. That works out to a density of about 0.38 g per mL.
How many cups is 100 g of rolled oats?
100 g of rolled oats is about 1.11 cups, or roughly 17.8 tablespoons.
Why can’t I convert cups to grams directly?
A cup measures volume and a gram measures weight, so the conversion depends entirely on the ingredient. A cup of rolled oats is 90 g, but a cup of honey is 340 g and a cup of cocoa powder is only 84 g.
Does the cup size matter?
Yes. A US customary cup is 236.59 mL, a US legal cup is 240 mL and a metric cup is 250 mL. Using a metric cup for rolled oats gives 95 g instead of 90 g — about 6 percent more.