Oat Flour: How Many Grams in a Tablespoon?
Oat flour is ground rolled oats with a density of 0.42 g/mL — about 20% lighter than all-purpose flour. Because it contains no gluten network, a loosely spooned cup and a tapped cup can differ by 15–20 g, making volume measurements unreliable. Always weigh oat flour for consistent texture in pancakes, quick breads, and cookies.
Quick convert
- US cup = 236.588 mL
- 1 tbsp = 14.787 mL
- 1 tsp = 4.929 mL
Reference table
| tbsp | g |
|---|---|
| 1 | 6 |
| 2 | 12 |
| 3 | 19 |
| 4 | 25 |
| 5 | 31 |
| 6 | 37 |
| 7 | 43 |
| 8 | 50 |
| 9 | 56 |
| 10 | 62 |
| 11 | 68 |
| 12 | 75 |
| 13 | 81 |
| 14 | 87 |
| 15 | 93 |
| 20 | 124 |
| 25 | 155 |
| 30 | 186 |
Use in pancakes, muffins, cookies, and as a partial wheat-flour substitute. Replace up to 25% of AP flour by weight without texture loss.
Certified gluten-free oat flour is available for celiac consumers; regular oat flour may be cross-contaminated.
FAQ
- Can I substitute oat flour 1:1 for all-purpose flour?
- Not directly by volume: 1 cup oat flour weighs ~99g vs ~125g for AP. By weight, oat flour can replace 25–50% of AP flour in most quick-bread recipes; for full substitution, you need extra eggs or binders for structure.
- Is 1 cup of oat flour the same weight as 1 cup of rolled oats?
- No. 1 cup rolled oats weighs ~90g; 1 cup oat flour weighs ~99g because milling reduces air pockets. By weight they're close enough for most recipes.