Convert Rolled oats: cups to oz
1 cup of Rolled oats = 3.14 oz
Amount of Rolled oats
Density: 0.376 g/ml · Rolled oats
Rolled oats: cups to oz at a glance
The amounts people ask for most, worked out for Rolled oats.
How much Rolled oats weighs
Every figure below is one measured number — 89 g per US cup — scaled. That is why this table and the converter above it cannot disagree.
One cup, side by side
Are these rolled oats, or steel-cut?
Rolled. King Arthur's rolled oats are 89 g per cup, which makes them the second-lightest ingredient on this site — a cup of rolled oats weighs less than a cup of all-purpose flour (120 g) and roughly a quarter of a cup of honey (336 g). Steel-cut and instant oats are separate measurements and are not on the site.
Source for Rolled oats: King Arthur Baking · King Arthur Baking ingredient weight chart
Frequently asked questions
How many oz is 1 cup of Rolled oats?
1 cup of Rolled oats is 3.14 oz, because one US cup of Rolled oats weighs 89 g. That single measured figure is the whole conversion — every other unit on this page is derived from it.
How many cups is 4 oz of Rolled oats?
4 oz of Rolled oats is 1.27 cups. It is the same conversion read backwards, so this page and its reverse always agree.
Is that ounces by weight, or fluid ounces?
By weight. dishscale's ounce is the international avoirdupois ounce, 28.3495 g, so one cup of Rolled oats is 3.14 oz. A US fluid ounce is a volume and there are eight of them to the cup, so that same cup is 8 fl oz at the same time. The two readings coincide only for an ingredient that happens to weigh eight ounces to the cup.
Where does dishscale's figure for Rolled oats come from?
One US cup of Rolled oats is 89 g. The dataset records that as: “King Arthur Baking”. That is the King Arthur Baking ingredient weight chart. Every ingredient on the site carries the reference its weight came from, so any number here can be checked — and corrected if the source disagrees.