Rolled oats (old-fashioned): Cups to Grams
One US cup of rolled oats (old-fashioned) is about 89 g (flour & dry); a tablespoon is about 5.56 g and 100 g is about 1.12 cups. Convert any amount below. Also called porridge oats.
Weight uses rolled oats (old-fashioned)'s real density. Volume↔volume and weight↔weight are exact for any ingredient; cup→gram uses a cited reference weight (packing and cup size vary by ±5%).
Rolled oats (old-fashioned) — volume to weight
Common cup and spoon amounts of rolled oats (old-fashioned), converted to grams, ounces and millilitres.
| Amount | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 tsp | 1.85 g | 0.065 oz | 4.93 ml |
| 1 tbsp | 5.56 g | 0.196 oz | 14.8 ml |
| ¼ cup | 22.3 g | 0.785 oz | 59.1 ml |
| ⅓ cup | 29.7 g | 1.05 oz | 78.9 ml |
| ½ cup | 44.5 g | 1.57 oz | 118 ml |
| ⅔ cup | 59.3 g | 2.09 oz | 158 ml |
| ¾ cup | 66.8 g | 2.35 oz | 177 ml |
| 1 cup | 89 g | 3.14 oz | 237 ml |
| 2 cups | 178 g | 6.28 oz | 473 ml |
Rolled oats (old-fashioned) — weight to cups
Weigh rolled oats (old-fashioned) on a scale? Here is what each weight is in cups and tablespoons.
| Grams | Cups | Tablespoons | Ounces |
|---|---|---|---|
| 10 g | 0.112 | 1.8 | 0.353 oz |
| 25 g | 0.281 | 4.49 | 0.882 oz |
| 50 g | 0.562 | 8.99 | 1.76 oz |
| 100 g | 1.12 | 18 | 3.53 oz |
| 150 g | 1.69 | 27 | 5.29 oz |
| 200 g | 2.25 | 36 | 7.05 oz |
| 250 g | 2.81 | 44.9 | 8.82 oz |
| 500 g | 5.62 | 89.9 | 17.6 oz |
| 1000 g | 11.2 | 180 | 35.3 oz |
Why weigh rolled oats (old-fashioned) instead of measuring cups?
A cup measures volume, but recipes really care about how much rolled oats (old-fashioned) you add by weight. One US cup of rolled oats (old-fashioned) is taken as 89 g here, cited from King Arthur Baking, and every conversion on this page routes through that figure. Volume-to-volume and weight-to-weight steps are exact, but the cup→gram crossing depends on how the rolled oats (old-fashioned) is packed, so a kitchen scale is the reliable way to hit the same result every time.
FAQ
How many grams are in a cup of rolled oats (old-fashioned)?
One US cup of rolled oats (old-fashioned) weighs about 89 g (source: King Arthur Baking). Because a cup measures volume, the exact weight shifts a little with how you fill it, so treat this as ±5% and weigh for precision.
How many grams are in a tablespoon of rolled oats (old-fashioned)?
One tablespoon of rolled oats (old-fashioned) is about 5.56 g, and one teaspoon about 1.85 g, since a US cup is exactly 16 tablespoons (48 teaspoons).
How much is 100 g of rolled oats (old-fashioned) in cups?
100 g of rolled oats (old-fashioned) is about 1.12 cups. Use the converter above for any other weight — it works in both directions.
Is the cup-to-gram figure for rolled oats (old-fashioned) exact?
The cup weight is a cited reference (King Arthur Baking); volume↔volume and weight↔weight conversions on this page are exact, but the cup→gram step depends on packing, humidity and brand, so it is best treated as ±5%. A kitchen scale removes the guesswork.
Other ingredients
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