100 grams of oats is about 1.25 cups, and 1 cup weighs about 80 grams. Use the converter below for any amount, or check the full grams-to-cups chart.
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100 grams of oats is about 1.25 cups, based on 80 grams per cup. Because grams measure weight and cups measure volume, the exact number of cups depends on the ingredient’s density — and oats weighs about 80 grams in a full cup. For the most reliable results in baking, weigh it on a digital scale.
Quick reference for oats at 80 grams per cup.
| Grams | Cups | Nearest fraction |
|---|---|---|
| 30 g | 0.38 cups | ≈ 1/3 cup |
| 50 g | 0.63 cups | 5/8 cup |
| 100 g | 1.25 cups | 1 1/4 cups |
| 150 g | 1.88 cups | ≈ 1 3/4 cups |
| 200 g | 2.5 cups | 2 1/2 cups |
| 250 g | 3.13 cups | ≈ 3 cups |
| 500 g | 6.25 cups | ≈ 6 cups |
Rolled oats are bulky and light, so a cup holds relatively little weight. One cup of old-fashioned rolled oats weighs about 80 grams. Quick (instant) oats are chopped smaller and pack a little denser, so they weigh slightly more per cup.
100 grams of oats is about 1.25 cups, based on 80 grams per cup.
One cup of oats is about 80 grams.
250 grams of oats is about 3.13 cups, based on 80 grams per cup.
Roughly. Old-fashioned rolled oats are about 80 grams per cup; quick oats pack a little denser and weigh slightly more, but 80 grams per cup is a good general estimate.
About 40 grams, since one cup of rolled oats is roughly 80 grams.