1 Cup of Oat Flour in Grams

1 cup of oat flour weighs about 92 grams (3.25 oz).

US cup (236.6 ml). Source: King Arthur Baking Ingredient Weight Chart.

Tablespoons
16 tbsp
Teaspoons
48 tsp
Milliliters
236.6 ml
Grams
92 g
Ounces (weight)
3.245 oz

Based on about 92 g per US cup of oat flour. Real weights vary with brand and how the cup is filled.

Oat Flour: cups to grams chart

CupsGramsOuncesMilliliters
1/8 cup12 g0.41 oz30 ml
1/4 cup23 g0.81 oz59 ml
1/3 cup31 g1.08 oz79 ml
1/2 cup46 g1.62 oz118 ml
2/3 cup61 g2.16 oz158 ml
3/4 cup69 g2.43 oz177 ml
1 cup92 g3.25 oz237 ml
1 1/2 cups138 g4.87 oz355 ml
2 cups184 g6.49 oz473 ml
3 cups276 g9.74 oz710 ml
4 cups368 g13 oz946 ml

Oat Flour: grams to cups

Many recipes outside the US list weights. Divide the grams by 92 (the typical weight of one cup) to get cups. A tablespoon is 1/16 cup, about 5.8 g, and a teaspoon is 1/3 tablespoon, about 1.9 g.

GramsCups (decimal)Cups (nearest 1/8)Tablespoons
50 g0.5431/28.696
100 g1.0871 1/817.39
125 g1.3591 3/821.74
200 g2.1742 1/834.78
250 g2.7172 3/443.48
300 g3.2613 1/452.17
500 g5.4355 3/886.96

How oat flour compares with similar ingredients

Cup weights of nearby ingredients on this site, so you can see whether a swap changes the amount you weigh out. The last column is the difference from oat flour per cup.

Ingredient1 cupDifference
oat flour (this page)92 g—
white rice flour142 g+50 g
semolina flour163 g+71 g
cornmeal138 g+46 g
cornstarch112 g+20 g

Measuring oat flour by cup and by weight

Oat flour weighs about 92 g per cup, lighter than wheat flour. You can make it by blitzing rolled oats in a blender until powdery, but the result depends on how long you blend, so a cup of homemade oat flour can weigh a bit more or less than the store-bought figure. It is naturally low in gluten, which is why oat-flour muffins are tender but crumbly.

Need a different ingredient? Browse all cups-to-grams conversions, or use the plain cooking converter and cups to ml converter for water-like liquids.

Helpful answers

Frequently asked questions

How many grams are in 1 cup of oat flour?
About 92 g (3.25 oz). This is a typical value from the King Arthur Baking Ingredient Weight Chart; your own cup may differ by several grams depending on brand and how it is measured.
How many grams are in 1/2 cup of oat flour?
About 46 g (1.62 oz). For 1/4 cup it is about 23 g, and for 1/3 cup about 31 g.
How many grams are in 1 tablespoon of oat flour?
About 5.8 g, since a US cup holds 16 tablespoons. A teaspoon is roughly 1.9 g.
How many cups is 100 grams of oat flour?
About 1.087 cup, using 92 g per cup. Written the way recipes do, 250 g is about 2 3/4 cups and 500 g is about 5 3/8 cups.
Is 1 cup of oat flour heavier than 1 cup of white rice flour?
No. At the typical values on this site, 1 cup of oat flour is 92 g and 1 cup of white rice flour is 142 g, a difference of 50 g per cup.
How many grams of rolled oats make 1 cup of oat flour?
Roughly 1¼ cups of rolled oats (about 140 g) blend down to around 1 cup of oat flour, though the exact yield depends on how finely you grind it.