Oat flour: Cups to Grams
One US cup of oat flour is about 92 g (flour & dry); a tablespoon is about 5.75 g and 100 g is about 1.09 cups. Convert any amount below.
Source basis: King Arthur Baking lists 1 US cup of oat flour at 92 g. Source checked 14 August 2026; cup-to-weight results remain approximate because packing and product density vary.
Weight uses oat flour's real density. Volume↔volume and weight↔weight are exact for any ingredient; cup→gram uses a cited reference weight (packing and cup size vary by ±5%).
Product form: This page uses oat flour. A differently cut, packed, drained, cooked, or otherwise prepared form can have a different cup weight.
Oat flour — volume to weight
Common cup and spoon amounts of oat flour, converted to grams, ounces and millilitres.
| Amount | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 tsp | 1.92 g | 0.068 oz | 4.93 ml |
| 1 tbsp | 5.75 g | 0.203 oz | 14.8 ml |
| ¼ cup | 23 g | 0.811 oz | 59.1 ml |
| ⅓ cup | 30.7 g | 1.08 oz | 78.9 ml |
| ½ cup | 46 g | 1.62 oz | 118 ml |
| ⅔ cup | 61.3 g | 2.16 oz | 158 ml |
| ¾ cup | 69 g | 2.43 oz | 177 ml |
| 1 cup | 92 g | 3.25 oz | 237 ml |
| 2 cups | 184 g | 6.49 oz | 473 ml |
Oat flour — weight to cups
Weigh oat flour on a scale? Here is what each weight is in cups and tablespoons.
| Grams | Cups | Tablespoons | Ounces |
|---|---|---|---|
| 10 g | 0.109 | 1.74 | 0.353 oz |
| 25 g | 0.272 | 4.35 | 0.882 oz |
| 50 g | 0.543 | 8.7 | 1.76 oz |
| 100 g | 1.09 | 17.4 | 3.53 oz |
| 150 g | 1.63 | 26.1 | 5.29 oz |
| 200 g | 2.17 | 34.8 | 7.05 oz |
| 250 g | 2.72 | 43.5 | 8.82 oz |
| 500 g | 5.43 | 87 | 17.6 oz |
| 1000 g | 10.9 | 174 | 35.3 oz |
Why weigh oat flour instead of measuring cups?
A cup measures volume, but recipes really care about how much oat flour you add by weight. One US cup of oat flour is taken as 92 g here, cited from King Arthur Baking for the exact chart form “oat flour”, and every conversion on this page routes through that figure. Volume-to-volume and weight-to-weight steps are exact, but the cup→gram crossing depends on product form and how the oat flour is packed, so a kitchen scale is the reliable way to hit the same result every time.
FAQ
How many grams are in a cup of oat flour?
One US cup of oat flour weighs about 92 g (source: King Arthur Baking; chart entry: 1 US cup of oat flour). Because a cup measures volume, the exact weight shifts a little with how you fill it, so treat this as ±5% and weigh for precision.
How many grams are in a tablespoon of oat flour?
One tablespoon of oat flour is about 5.75 g, and one teaspoon about 1.92 g, since a US cup is exactly 16 tablespoons (48 teaspoons).
How much is 100 g of oat flour in cups?
100 g of oat flour is about 1.09 cups. Use the converter above for any other weight — it works in both directions.
Is the cup-to-gram figure for oat flour exact?
The cup weight is a cited reference (King Arthur Baking); volume↔volume and weight↔weight conversions on this page are exact, but the cup→gram step depends on packing, humidity and brand, so it is best treated as ±5%. A kitchen scale removes the guesswork.
Other ingredients
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