Old-Fashioned Or Quick Oats Grams to Cups Converter
One US cup of old-fashioned or quick oats weighs about 89 g, so 200 g of it is 2 1/4 cups.
By Alex Morgan, Founder and Editor. Weights checked 31 Oct 2026.
Use the converter to change grams to cups or cups to grams for old-fashioned or quick oats. Weights come from the King Arthur Baking ingredient weight chart, checked 31 Oct 2026.
- 1 cup
- 89 g
- 1/2 cup
- 45 g
- 1/4 cup
- 22 g
- 1 tablespoon
- 5.6 g
How to convert grams to cups for old-fashioned or quick oats
Three steps, using 89 g per cup.
- 1Find the weight of one cup
One US cup of old-fashioned or quick oats is 89 g.
- 2Divide your grams by 89
Cups = grams ÷ 89. For cups to grams, multiply the cups by 89 instead.
- 3Turn the decimal into a kitchen measure
Round to a measure you can scoop, such as 1/4, 1/3, 1/2 or 3/4 cup, with spoons for the rest.
Worked example
Old-Fashioned Or Quick Oats Weight Per Cup, Tablespoon And Teaspoon
The same ingredient from a full cup down to a teaspoon, in grams.
Old-Fashioned Or Quick Oats Compared With Other Common Ingredients
Grams in one US cup. Heavier ingredients pack more weight into the same cup.
Old-Fashioned Or Quick Oats grams to cups chart
Each row converts grams of old-fashioned or quick oats to cups using 89 g per cup.
| Grams | Cups (kitchen measure) | Cups (decimal) | Tablespoons |
|---|---|---|---|
| 25 g | 1/4 cup + 1/2 tbsp | 0.28 | 4.49 |
| 50 g | 1/2 cup + 1 tbsp | 0.56 | 8.99 |
| 75 g | 3/4 cup + 1 1/2 tbsp | 0.84 | 13.48 |
| 100 g | 1 1/8 cups | 1.12 | 17.98 |
| 125 g | 1 3/8 cups | 1.4 | 22.47 |
| 150 g | 1 2/3 cups | 1.69 | 26.97 |
| 175 g | 2 cups | 1.97 | 31.46 |
| 200 g | 2 1/4 cups | 2.25 | 35.96 |
| 250 g | 2 3/4 cups | 2.81 | 44.94 |
| 300 g | 3 3/8 cups | 3.37 | 53.93 |
| 400 g | 4 1/2 cups | 4.49 | 71.91 |
| 500 g | 5 5/8 cups | 5.62 | 89.89 |
Old-Fashioned Or Quick Oats cups to grams chart
How many grams of old-fashioned or quick oats are in common cup and spoon measures.
| Measure | 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 |
| 1 tablespoon | 5.6 g | 0.2 oz |
| 1 teaspoon | 1.9 g | 0.07 oz |
How many grams are in a cup of old-fashioned or quick oats?
A US cup (236.6 ml) of old-fashioned or quick oats weighs about 89 g (listed per 1 cup). That is about 3.14 oz, or 5.6 g per tablespoon.
Weights are averages from the King Arthur Baking ingredient weight chart, last checked 31 Oct 2026. They shift a little with brand, humidity and how the cup is filled, so weigh your ingredients when accuracy matters.
Other grains and rice: grams per cup
| Ingredient | 1 cup | 1/2 cup |
|---|---|---|
| Rolled Oats (King Arthur) | 113 g | 57 g |
| Long-Grain Rice (Dry) | 198 g | 99 g |
| Quinoa (Whole) | 177 g | 89 g |
Facts and tips for measuring old-fashioned or quick oats
Key figures
- Weight of 1 cup
- 89 g
- Weight of 1 tablespoon
- 5.6 g
- Ounces in 1 cup
- 3.14 oz
- A cup compared with flour
- 26% lighter than flour
- Rank by weight per cup
- 46th heaviest of 51
Measuring tips
- Measure grains the way the recipe lists them, because dry and cooked grains do not weigh the same per cup.
- Weigh in grams on a kitchen scale for the most accurate result, and set the scale to zero (tare) with the bowl on it.
- This site uses the US cup of 236.6 ml. A metric cup is 250 ml, so recipes from the UK, Australia or New Zealand can differ.
- Check whether the recipe means the ingredient sifted, packed, melted or cooked, because that changes the weight per cup.
Frequently Asked Questions (FAQs)
Quick answers: Grams to cups for old-fashioned or quick oats
How many grams are in 1 cup of old-fashioned or quick oats?
One US cup of old-fashioned or quick oats weighs about 89 g, according to the King Arthur Baking ingredient weight chart (listed per 1 cup). Brand and how you fill the cup can shift this by a few grams.
How many cups is 100 grams of old-fashioned or quick oats?
100 g of old-fashioned or quick oats is 1.12 cups, which is about 1 1/8 cups.
How many grams is half a cup of old-fashioned or quick oats?
Half a cup of old-fashioned or quick oats is about 45 g.
Why does grams to cups depend on the ingredient?
Grams measure weight and cups measure volume. A cup holds different weights of different ingredients, so each one needs its own grams per cup.
Alex Morgan
Alex Morgan is the Founder & editor of GramsToCups.recipes, helping home cooks and bakers convert grams to cups and cups to grams with ease. He focuses on simple, accurate ingredient conversions and practical kitchen measurement guides to make cooking and baking easier. About the site