Convert Rolled Oats from Cup (US)

How much is 1 US cup of rolled oats?

1 US cup of rolled oats (oatmeal) is 86.4 grams, about 3.04 ounces. 0.5 US cups of rolled oats is 43.2 grams and 2 US cups is 172.8 grams. Use the converter below for any amount.

Rolled oats are whole oat groats that have been steamed and flattened into flakes (quicker to prepare than steel-cut oats, which are coarsely chopped and take 20–30 minutes to cook) and chewier in texture than quick oats (which are rolled thinner for a 1–2 minute cook time). One metric cup (250 ml) of rolled oats weighs approximately 90 grams or 3.17 ounces. They are widely used in porridge, granola, baked goods such as oat cookies and crumbles, and as a breadcrumb substitute.

Oats are often sold by weight but measured by volume in baking recipes — getting the conversion right prevents dense or dry results. Measuring by weight is especially important as oats compress easily, making cup measures inconsistent.

Also known as

  • oatmeal
  • porridge oats
  • old-fashioned oats

Related Rolled Oats Ingredients

Desiccated coconut works alongside oats in granola, flapjacks, and crumble toppings, adding sweetness and a fine crunch where oats give chew. They are close in weight (88 g vs 90 g per cup), so weigh rather than scoop when the ratio matters. See desiccated coconut in US cups.

Oat flour is rolled oats milled to a fine powder, close in weight (100 g vs 90 g per cup). Blend rolled oats to make your own oat flour, or weigh the oats when a recipe gives one form but you have the other. See oat flour in US cups.

Oat milk is made by blending rolled oats with water and straining the solids. Soak and blend the oats for a homemade carton, and weigh the oats when scaling the batch. See oat milk in US cups.

No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.

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Rolled Oats Measurement Converter

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Rolled Oats Calculators & Baking Tools

Working with rolled oats? These tools handle the jobs a converter cannot.

Common Rolled Oats Conversions

Here are the most common rolled oats conversions from cups (US) to grams.

Cups (US)Grams
0.25 cups (US)21.6 g
0.5 cups (US)43.2 g
0.75 cups (US)64.8 g
1 cup (US)86.4 g
1.25 cups (US)108 g
1.5 cups (US)129.6 g
2 cups (US)172.8 g
2.5 cups (US)216 g
3 cups (US)259.2 g

Rolled Oats Conversion Chart

The conversion chart below gives a quick reference for converting rolled oats from Cup (US) to other measurements.

cup(US)cupgramsounceslbkgtbsptsp
0.25 cup (US)0.24 cup21.6 g0.76 oz0.05 lb0.02 kg4 tbsp12 tsp
0.5 cup (US)0.48 cup43.2 g1.52 oz0.1 lb0.04 kg8 tbsp24 tsp
1 cup (US)0.96 cup86.4 g3.04 oz0.19 lb0.09 kg16 tbsp48 tsp
2 cup (US)1.92 cup172.8 g6.09 oz0.38 lb0.17 kg32 tbsp96 tsp

Frequently Asked Questions

How much is 1 US cup of rolled oats?
1 US cup of rolled oats is 86.4 grams, or 3.04 ounces. The ratio is fixed, so 0.5 US cups of rolled oats is 43.2 grams and 2 US cups is 172.8 grams. Whatever unit your recipe uses, enter the amount in the converter above or read the conversion chart on this page for the most common quantities. Open the rolled oats converter
How many grams is 1 US cup of rolled oats?
1 US cup of rolled oats is 86.4 grams. The conversion scales in a straight line, so 0.5 US cups is 43.2 grams and 2 US cups is 172.8 grams. Multiply or divide that figure to match whatever your recipe needs, or use the converter above for an exact grams reading at any amount. 1 US cup rolled oats in grams
How many US cups of rolled oats is 86.4 grams?
86.4 grams of rolled oats is 1 US cup. The conversion works the same in reverse, so you can switch between US cups and grams without changing the result. This helps when a recipe lists one unit but you would rather measure in the other. The converter above and the chart below cover both directions for any amount.
What is 1 US cup of rolled oats in ounces?
1 US cup of rolled oats is 3.04 ounces. The ratio is fixed, so 0.5 US cups is 1.52 ounces and 2 US cups is 6.09 ounces. Use the converter above for any other amount, or see the chart on this page for the common quantities at a glance. 1 US cup rolled oats in ounces
How do US cups and tablespoons compare as units?
US cups and tablespoons are both volume units, so the conversion between them does not vary by ingredient. One metric cup holds about 16.67 tablespoons or 50 teaspoons, and the ratio stays fixed regardless of what you are measuring. The volume converter handles any amount between cups, tablespoons, teaspoons, and millilitres. Cups (US) to tablespoons

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