300 g of rolled oats in cups
300 g ≈ 3.33 cups
That is also 53.3 tablespoons, at 90 g per US cup.
How to measure it
3⅓ cups
3.33 cups is a number, not an instruction — there is no 3.33 cup in the drawer. The line above is the same quantity in the sizes you actually own, and following it lands within a teaspoon of 300 g.
Spoon the rolled oats into the cup and level it off. Scooping straight from the bag packs it down; on flour that alone is worth about 20%, which is more than the difference this page is measuring.
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Why this number moves
Very light and airy. Steel-cut oats are much denser at around 180 g per cup — the two are not interchangeable by volume.
This page uses 90 g per US cup. If your recipe came with its own figure, use theirs — internal consistency matters more than which table is right.
Other weights of rolled oats
- 25 g in cups
- 50 g in cups
- 75 g in cups
- 100 g in cups
- 125 g in cups
- 150 g in cups
- 200 g in cups
- 250 g in cups
- 350 g in cups
- 400 g in cups
- 500 g in cups
Frequently asked questions
How many cups is 300 g of rolled oats?
3.33 cups, which in measuring cups and spoons is 3⅓ cups. One US cup of rolled oats weighs about 90 g.
How do I measure 300 g of rolled oats without scales?
3⅓ cups. Spoon it in and level the top rather than scooping — scooping compacts rolled oats and can add a fifth to the weight.
Is this the same in the UK?
The gram figure is, the cup is not. A US cup is 236.6 ml and the metric cup used in Australia and much of Europe is 250 ml, so a European cup of rolled oats weighs about 95 g. These pages use the US cup.