Oat flour, Cups to Grams & Grams to Cups
1 cup of oat flour = 120 grams · 100g = 0.83 cups
Oat flour is nothing more than rolled or quick oats ground to a powder, and you can make it yourself in a blender. It is light and fluffy, around 120g per cup, and being gluten-free it produces tender but crumbly bakes. Roughly 1¼ cups of rolled oats blend down into 1 cup of oat flour.
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Oat flour cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 15 g | 0.53 oz | 2 |
| 1/4 | 30 g | 1.06 oz | 4 |
| 1/3 | 40 g | 1.41 oz | 5.33 |
| 1/2 | 60 g | 2.12 oz | 8 |
| 2/3 | 80 g | 2.82 oz | 10.7 |
| 3/4 | 90 g | 3.17 oz | 12 |
| 1 | 120 g | 4.23 oz | 16 |
| 1 1/2 | 180 g | 6.35 oz | 24 |
| 2 | 240 g | 8.47 oz | 32 |
| 3 | 360 g | 12.7 oz | 48 |
Oat flour grams to cups table
Working the other way? Here's how many cups common gram weights of oat flour come to, handy when a recipe lists oat flour in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.21 | 0.88 oz | 3.33 |
| 50 g | 0.42 | 1.76 oz | 6.67 |
| 75 g | 0.62 | 2.65 oz | 10 |
| 100 g | 0.83 | 3.53 oz | 13.3 |
| 125 g | 1.04 | 4.41 oz | 16.7 |
| 150 g | 1.25 | 5.29 oz | 20 |
| 175 g | 1.46 | 6.17 oz | 23.3 |
| 200 g | 1.67 | 7.05 oz | 26.7 |
| 225 g | 1.88 | 7.94 oz | 30 |
| 250 g | 2.08 | 8.82 oz | 33.3 |
| 300 g | 2.5 | 10.6 oz | 40 |
| 350 g | 2.92 | 12.3 oz | 46.7 |
| 400 g | 3.33 | 14.1 oz | 53.3 |
| 500 g | 4.17 | 17.6 oz | 66.7 |
Oat flour: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of oat flour weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of oat flour in each:
| Cup standard | Size | 1 cup oat flour | Used in |
|---|---|---|---|
| US cup | 237 ml | 120 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 127 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 144 g | Older British recipes |
| Japanese cup | 200 ml | 101 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Oat flour in grams
- ⅛ cup oat flour = 15g
- ¼ cup oat flour = 30g
- ⅓ cup oat flour = 40g
- ½ cup oat flour = 60g
- ⅔ cup oat flour = 80g
- ¾ cup oat flour = 90g
- 1 cup oat flour = 120g
- 2 cups oat flour = 240g
How many cups is 100g, 200g or 300g of oat flour?
Because one cup of oat flour weighs about 120 grams, you can convert any weight to cups by dividing by 120. So 100g of oat flour is about 0.83 cups, 200g is about 1.67 cups, 250g is about 2.08 cups, and 300g is about 2.5 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure oat flour accurately
For the most reliable baking results, weigh oat flour on a kitchen scale rather than scooping by volume. One US cup of oat flour weighs about 120 grams (4.23 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts oat flour and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: If you grind your own, let the flour settle before measuring, and add a binder like egg or xanthan gum since oat flour has no gluten to hold a bake together.
Oat flour conversions: common questions
How many grams are in a cup of oat flour?
One US cup of oat flour weighs approximately 120 grams (4.23 oz).
How many grams in half a cup of oat flour?
Half a cup (½ cup) of oat flour weighs approximately 60 grams.
How many grams in a quarter cup of oat flour?
A quarter cup (¼ cup) of oat flour weighs approximately 30 grams.
How do I convert oat flour from cups to grams?
Multiply the number of cups by 120. For example, 2 cups of oat flour = 240 grams, and ¾ cup = 90 grams.
How many cups is 100g of oat flour?
100 grams of oat flour is about 0.83 cups. 200g is about 1.67 cups and 300g is about 2.5 cups, since 1 cup weighs 120 grams.
How many grams in a metric (Australian) cup of oat flour?
One 250 ml metric cup of oat flour, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 127 grams, compared with 120 grams for a 236.6 ml US cup.