Grains, Rice & Legumes
Convert grams of rolled oats to cups
One gram of rolled oats weighs about 0.011 cup, and half a gram comes to roughly 0.0056 cup. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 g of rolled oats =
0.011 cup
About 0 cup in recipe notation
- ml
- 2.63
- tbsp
- 0.178
Rolled Oats: 90 g per US cup · USDA FoodData Central. Old-fashioned rolled oats. Quick oats are cut smaller and measure closer to 100 g per cup.
Full rolled oats chart →Rolled Oats at a glance
Every number on this page comes from a single figure: 90 grams per US cup (USDA FoodData Central).
- 1 cup
- 90 g
- 1 tablespoon
- 5.63 g
- 1 teaspoon
- 1.88 g
- 1 cup in ounces
- 3.17 oz
- 100 g in cups
- 1.11 cups
- Density
- 0.38 g/ml
grams to cups chart for rolled oats
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Grams | Cups (US) | Tablespoons (US) | Millilitres |
|---|---|---|---|
| 10 g | 0.111 cup | 1.78 tbsp | 26.3 ml |
| 25 g | 0.278 cup | 4.44 tbsp | 65.7 ml |
| 50 g | 0.556 cup | 8.89 tbsp | 131 ml |
| 75 g | 0.833 cup | 13.3 tbsp | 197 ml |
| 100 g | 1.11 cup | 17.8 tbsp | 263 ml |
| 125 g | 1.39 cup | 22.2 tbsp | 329 ml |
| 150 g | 1.67 cup | 26.7 tbsp | 394 ml |
| 200 g | 2.22 cup | 35.6 tbsp | 526 ml |
| 250 g | 2.78 cup | 44.4 tbsp | 657 ml |
| 500 g | 5.56 cup | 88.9 tbsp | 1314 ml |
| 1000 g | 11.1 cup | 178 tbsp | 2629 ml |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat rolled oats as 90 g per US customary cup, which works out to 0.380 g/ml. From there:
- Your grams figure is converted into millilitres or grams using standard unit sizes (g = 1 g).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 1 1/8 cups.
Measuring rolled oats accurately
Old-fashioned rolled oats. Quick oats are cut smaller and measure closer to 100 g per cup.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many cups are in 1 gram of rolled oats?
1 gram of rolled oats is 0.011 cup. This is based on a density of 90 g per US cup.
How many cups are in 2 grams of rolled oats?
2 grams of rolled oats is 0.022 cup, and 0.0056 cup for half a gram.
How much is 100 g of rolled oats in cups?
100 g of rolled oats is about 1 1/8 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for rolled oats?
Old-fashioned rolled oats. Quick oats are cut smaller and measure closer to 100 g per cup.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.