⅓ cup rolled oats in grams
⅓ cup of rolled oats = 30 grams · 1.06 oz · 5.333 tbsp
That is a third of a cup, spooned in loosely and levelled, since pressing it down can add half as much again. A full US cup of rolled oats weighs 90 g, so ⅓ cup comes to 30 g. Use the converter for any other amount.
Based on a measured density of 90 g per US cup (236.6 ml), spooned in loosely and levelled. Last reviewed .
How ⅓ cup of rolled oats works out
One US cup of rolled oats weighs 90 grams, so multiply by 0.333 to get a third of a cup: 90 × 0.333 = 30 g. In the other direction, 30 g of rolled oats divided by 90 brings you back to ⅓ cup.
If you have no scales, ⅓ cup is 5.333 level tablespoons of rolled oats (16 teaspoons), because a US cup holds 16 tablespoons. In a 250 ml metric cup — the Australian, New Zealand and modern UK standard — the same fraction is 31.7 g.
Tip: Rolled and quick oats can usually be swapped, but rolled oats keep more chew in cookies and granola, while quick oats give a softer, smoother porridge.
Other rolled oats amounts
⅓ cup of rolled oats: common questions
How many grams is ⅓ cup of rolled oats?
⅓ cup of rolled oats weighs about 30 grams (1.06 oz), based on a full US cup of rolled oats weighing 90 grams.
How many tablespoons is ⅓ cup of rolled oats?
5.333 level tablespoons, since a US cup holds 16 tablespoons. That is 16 teaspoons.
Is ⅓ cup the same in a metric cup?
No. A 250 ml metric cup is slightly larger than the 236.6 ml US cup, so ⅓ cup of rolled oats is 31.7 grams by the metric cup against 30 grams by the US cup.
For every other amount, see the full rolled oats cups to grams tables.