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How Much Is 1.5 Cups of Oat Flour in Grams?

1.5 cups of oat flour weighs 138.00 g. This is based on oat flour having a density of 92g per cup. Because cups measure volume and grams measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 1.5 cups.

1.5 cups of oat flour
=
138.00g
Result using all cup standards info
138.00 g (US) 145.82 g (Metric Cup) 165.73 g (Imperial Cup)
1.5 cups of oat flour is also
138.00

Formula and Step-by-Step

cups × 92g/cup = grams
  1. Start with 1.5 cups of oat flour
  2. 1 cup of oat flour = 92g
  3. 1.5 × 92 = 138g

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

For the most consistent results, weigh oat flour on a kitchen scale. Volume measurements can vary by 20-30% depending on how the flour is scooped.

Oat Flour at Different Amounts

How oat flour scales across common cups measurements. Your amount (1.5 cups) is highlighted.

0.33 cups30.36 g0.5 cups46 g0.75 cups69 g1 cup92 g1.5 cups138 g2 cups184 g3 cups276 g4 cups368 g

For reference, 1.5 cups of oat flour (138g) is close in weight to a baseball (145g).

Other Amounts of Oat Flour

Cups US Grams Metric Cup Imperial Cup
0.25 cups 23.00 g 24.30 g 27.62 g
0.33 cups 30.36 g 32.08 g 36.46 g
0.5 cups 46.00 g 48.61 g 55.24 g
0.75 cups 69.00 g 72.91 g 82.87 g
1 cup 92.00 g 97.22 g 110.49 g
1.5 cups 138.00 g 145.82 g 165.73 g
2 cups 184.00 g 194.43 g 220.98 g
3 cups 276.00 g 291.65 g 331.46 g
4 cups 368.00 g 388.86 g 441.95 g
5 cups 460.00 g 486.08 g 552.44 g

Understanding the Units

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

What is a Gram?

Weighing ingredients in grams eliminates the variability of volume measurements. A cup of flour can weigh anywhere from 120g to 160g depending on how it was scooped, but 120g of flour is always 120g of flour.

Frequently Asked Questions

About 138.00 g, based on oat flour having a density of 92g per cup. The exact amount depends on how the ingredient is measured and the specific product.
Multiply the number of cups by 92 (grams per cup for oat flour). For 1.5 cups: 1.5 × 92 = 138.00 g.
For the most accurate results, weigh oat flour on a kitchen scale. If measuring by volume, sift or whisk first to break up clumps, then spoon into the measuring cup and level off. Do not scoop directly from the bag.
Yes, quite a bit. If you spoon the flour into your measuring cup and level it off, you will get about 92 grams per cup. If you dip directly into the flour bag and sweep level, the flour packs tighter and you can end up with 101.2 to 115 grams per cup instead. This conversion uses the spoon-and-level method, which is the standard most baking references follow.
Reverse the conversion: 138.00 g ÷ 92 = 1.5 cups. Or use the Grams to Cups converter.