Oat Flour — Cups to Grams Conversion
One cup of oat flour weighs 90g.
Oat Flour Cups to Grams Chart
| Cups | Grams |
|---|---|
| ¼ cup | 23g |
| ⅓ cup | 30g |
| ½ cup | 45g |
| ¾ cup | 68g |
| 1 cup | 90g |
| 1½ cups | 135g |
| 2 cups | 180g |
| 3 cups | 270g |
Source: King Arthur Baking ingredient weight chart · Measurement method: Spooned & levelled
Tablespoon & Teaspoon Weights
| Measure | Grams | Notes |
|---|---|---|
| 1 tbsp (US/UK — 15ml) | 5.6g | Standard in US, UK, Canada |
| 1 tbsp (Australian — 20ml) | 7.5g | One-third larger than US/UK |
| 1 tsp (5ml — universal) | 1.9g | Same worldwide |
About Oat Flour
Simply rolled oats ground fine, oat flour adds a mild, sweet, toasted flavour and tender crumb. Naturally gluten-free, though usually cross-contaminated during processing unless certified.
Why the Weight Per Cup Varies
Oat flour is lighter than wheat flour — 90g per cup — because irregular, fluffy ground-oat particles trap more air than fine wheat starch. It also resists compression slightly better than wheat flour when scooped.
Names in Different Countries
Sold simply as "oat flour"; easy to make at home by blending rolled oats.
Common Recipe Uses
Pancakes, muffins, quick breads, partial flour replacement (up to 25–30%) for moisture and flavour.
Substitutions
Replace up to 25–30% of plain flour without major changes. A full substitution needs a binder (egg, flaxseed) since it has no gluten. Homemade: blend rolled oats 30–60 seconds until fine.
Frequently Asked Questions
Yes — blend rolled oats for 30–60 seconds until a fine powder forms; 1 cup of oats yields roughly ¾–1 cup of oat flour.
Oats are naturally gluten-free, but look for certified gluten-free oat flour if cross-contamination matters for you.
Not without adjustment — no gluten means a full swap needs an added binder like egg or flaxseed gel.
5.6g for a US/UK tablespoon, or 7.5g Australian.
Recommended for accurate baking
A digital kitchen scale accurate to 1g removes all measurement guesswork. Affiliate links will appear here once approved for Amazon Associates.
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