Quick Oats: Cups to Grams
Quick Oats (also called instant oats) weighs 80 g per US cup — so a recipe in cups and a recipe in grams can be swapped either way. 100 g is 1 1/4 cups, and 2 cups is 160 g.
💡 Tip: Quick oats are rolled oats cut smaller and thinner, so they cook faster. They're not the same as sweetened instant oatmeal packets.
Grams to cups chart for quick oats
| Grams | Amount | Ounces |
|---|---|---|
| 50 | 5/8 cup | 1.76 |
| 100 | 1 1/4 cups | 3.53 |
| 150 | 1 7/8 cups | 5.29 |
| 180 | 2 1/4 cups | 6.35 |
| 200 | 2 1/2 cups | 7.05 |
| 250 | 3 1/8 cups | 8.82 |
| 300 | 3 3/4 cups | 10.6 |
| 400 | 5 cups | 14.1 |
| 500 | 6 1/4 cups | 17.6 |
| 750 | 9 3/8 cups | 26.5 |
| 1000 | 12 1/2 cups | 35.3 |
Quick oats vs rolled: same idea, faster cook
Quick oats are rolled oats cut smaller and pressed thinner, so they cook in a couple of minutes and give a softer, less chewy porridge. A cup weighs about 80 g. They swap 1:1 with rolled oats in most recipes, though baked goods will have a slightly finer texture.
No quick oats? Pulse rolled oats a few times in a blender or food processor to cut them down to size.
Cups to grams chart for quick oats
| Cups | Grams | Ounces |
|---|---|---|
| 1/4 | 20 | 0.71 |
| 1/3 | 26.7 | 0.94 |
| 1/2 | 40 | 1.41 |
| 3/4 | 60 | 2.12 |
| 1 | 80 | 2.82 |
| 1 1/2 | 120 | 4.23 |
| 2 | 160 | 5.64 |
| 3 | 240 | 8.47 |
| 4 | 320 | 11.3 |
For smaller amounts: a tablespoon of quick oats is about 5 g, and a teaspoon about 1.67 g.
Quick Oats against the other grains & legumes
At 80 g per cup, quick oats is the lightest of the 17 grains & legumes charted on this site. At the other end of the range, popcorn kernels weighs 225 g — 181% more for the very same cup.
That gap matters when you substitute by volume: use a cup of rolled oats where the recipe wanted quick oats and you have added about 10 g extra — 13% more than intended. Weighing instead of scooping removes the problem.
Quick Oats conversion questions
- How many grams is 1 cup of quick oats?
- 1 US cup of quick oats weighs about 80 grams, or 2.82 ounces.
- How many grams is 2 cups of quick oats?
- About 160 g, at roughly 80 g per cup.
- How many cups is 150g of quick oats?
- About 1⅞ cups of quick oats.
- Are quick oats and rolled oats interchangeable?
- Yes, 1:1 in most recipes. Quick oats cook faster and give a softer, less chewy result.
- Are quick oats the same as instant oats?
- Close — both are precut and quick-cooking, but instant oats are thinner still and often come pre-sweetened in flavored packets.
- Can I make quick oats from rolled oats?
- Yes. Pulse rolled oats a few times in a blender or processor to cut them smaller.
- How many cups is 100g of quick oats?
- About 1 1/4 cups — that is 100 divided by the 80 g a cup weighs.
- How many cups is 200g of quick oats?
- Just over or under 2 1/2 cups, depending how firmly you fill the cup. 200 g ÷ 80 g per cup = 2 1/2 cups.
- Why do my numbers differ slightly?
- Grain size and moisture vary by variety and age. Long thin grains stack with more air between them than short round ones, and older, drier stock weighs a little less per cup.