Grams to CupsKitchen conversions

Oats Grams to Cups: Chart for 2 Types

A cup of oats ranges from 89 g (old-fashioned or quick oats) to 113 g (rolled oats (king arthur)). Pick your type for the right answer.

Choose a type in the converter, or compare all 2 types in the tables below. Weights come from the King Arthur Baking ingredient weight chart, checked 31 Oct 2026.

Rolled Oats (King Arthur)
113 g per cup
Old-Fashioned Or Quick Oats
89 g per cup
g
1/211.52
1.77cups

Kitchen measure: 1 3/4 cups

Tablespoons
28.32
Millilitres
419
Ounces
7.05

113 g per cup (listed per 1 cup). Source: King Arthur Baking ingredient weight chart. How we measure

How to convert oats grams to cups

Find the weight per cup for your type, then divide.

  1. 1
    Pick your type of oats

    Each type has its own weight per cup, listed in the first table.

  2. 2
    Divide your grams by that weight

    Cups = grams ÷ grams per cup. For cups to grams, multiply instead.

  3. 3
    Turn the decimal into a kitchen measure

    Round to a measure you can scoop, such as 1/4, 1/3, 1/2 or 3/4 cup.

Worked example

200 g ÷ 113 g (rolled oats (king arthur))1.77 cups
As a kitchen measure1 3/4 cups
200 g ÷ 113 g (rolled oats (king arthur))1.77 cups

Oats: grams per cup by type

Weights are listed for one US cup, with half cup, quarter cup and tablespoon worked out from it.

Type1 cup1/2 cup1/4 cup1 tbsp
Rolled Oats (King Arthur)113 g57 g28 g7.1 g
Old-Fashioned Or Quick Oats89 g45 g22 g5.6 g

Weight source: King Arthur Baking ingredient weight chart, checked 31 Oct 2026. Weights are averages and shift a little with brand, humidity and how the cup is filled, so weigh your ingredients when accuracy matters. How we measure

Oats grams to cups chart

Grams converted to cups for each type, as a kitchen measure.

GramsRolled Oats (King Arthur)Old-Fashioned Or Quick Oats
50 g1/4 cup + 3 tbsp1/2 cup + 1 tbsp
100 g7/8 cup1 1/8 cups
125 g1 1/8 cups1 3/8 cups
150 g1 1/3 cups1 2/3 cups
200 g1 3/4 cups2 1/4 cups
250 g2 1/4 cups2 3/4 cups
300 g2 2/3 cups3 3/8 cups
400 g3 1/2 cups4 1/2 cups
500 g4 3/8 cups5 5/8 cups

Facts and tips for measuring oats

Key figures

Lightest per cup
89 g (old-fashioned or quick oats)
Heaviest per cup
113 g (rolled oats (king arthur))
Difference per cup
24 g
Types compared
2

Measuring tips

  • Measure grains the way the recipe lists them, because dry and cooked grains do not weigh the same per cup.
  • Weigh in grams on a kitchen scale for the most accurate result, and set the scale to zero (tare) with the bowl on it.
  • This site uses the US cup of 236.6 ml. A metric cup is 250 ml, so recipes from the UK, Australia or New Zealand can differ.
  • Check whether the recipe means the ingredient sifted, packed, melted or cooked, because that changes the weight per cup.

Frequently Asked Questions (FAQs)

Quick answers: Oats grams to cups

Does a cup of oats weigh the same for every type?

No. One US cup ranges from 89 g for old-fashioned or quick oats to 113 g for rolled oats (king arthur).

How many grams is 1 cup of oats?

It depends on the type: Rolled Oats (King Arthur) 113 g, Old-Fashioned Or Quick Oats 89 g per cup.

How many cups is 200 grams of oats?

It depends on the type. Rolled Oats (King Arthur) gives 1 3/4 cups for 200 g, while Rolled Oats (King Arthur) gives 1 3/4 cups.