Cups of steel-cut oats to pounds runs on one number, 0.35273962 pounds per cup. It is a measured property of this ingredient rather than a defined conversion, which is why a generic volume-to-weight tool cannot give you it.
The density behind that figure is 0.67628 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of steel-cut oats weighs 160 g, so this ingredient is 67.63% as heavy as the same volume of water — the single fact the whole page rests on.
A cup of steel-cut oats is 160 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 144 g and 192 g covers the range from lightly spooned to firmly packed. That 20% spread is larger than most of the adjustments recipes fuss over, and it disappears entirely the moment the ingredient is weighed instead.
Pounds are how steel-cut oats is bought rather than cooked, so this is the bag-size arithmetic: one pound is 2.835 cups, a 2 lb pack is 5.67 cups and a 5 lb sack is 14.17. That last figure is the one worth knowing before a large bake — it tells you whether one bag covers the recipe.
How the figure is arrived at: Cut rather than rolled, so the pieces are dense and pack far tighter than flakes of the same grain.
The formula
cups- The amount of steel-cut oats you are converting, in cups
0.352739619496- Pounds per cup for steel-cut oats, from its density of 0.67628 g/mL
pounds- The equivalent quantity in pounds
How it works, step by step
- Enter the quantity in cups.
- It is multiplied by 0.352739619496, the pounds-per-cup figure for steel-cut oats.
- The result appears in pounds, with a second reading in g beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
1/3 cup of steel-cut oats in pounds
A recipe calling for 1/3 cup of steel-cut oats needs 0.11758 pounds on the scale. The arithmetic is 0.333333 × 0.35273962 = 0.11757987, and halving the recipe halves the weight to 0.0587899 pounds.
3/4 cup of steel-cut oats in pounds
Take 3/4 cup of steel-cut oats: 0.75 × 0.35273962 gives 0.264555 pounds. Doubling the batch takes it to 0.529109 pounds, because the relationship is a straight proportion once the density is known.
3 cup of steel-cut oats in pounds
Take 3 cup of steel-cut oats: 3 × 0.35273962 gives 1.05822 pounds. Doubling the batch takes it to 2.11644 pounds, because the relationship is a straight proportion once the density is known.
How to read your score
Frequently asked questions
How many pounds are in 1 cup of steel-cut oats?
One cup of steel-cut oats is 0.35273962 pounds. Half that quantity is 0.17637 pounds and double it is 0.705479 pounds, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of steel-cut oats not 236 g like water?
Because weight per cup depends on what is in the cup. Steel-cut oats has a density of 0.67628 g per mL where water has 1.00, so a cup of it weighs 160 g rather than 236.6 g. That is a difference of 76.6 g per cup, and it is the reason a single volume-to-weight factor cannot be applied to every ingredient.
Does how I measure it change the weight?
Yes, and by more than most people expect. Handling changes the weight of a cup of steel-cut oats by roughly 20% — about 16 g either side of 160 g — because cut rather than rolled, so the pieces are dense and pack far tighter than flakes of the same grain. Weighing removes the question entirely.
Is a fluid ounce of steel-cut oats the same as an ounce?
No. A fluid ounce is a volume — one eighth of a US cup, 29.57 mL — and an ounce is a weight. One fluid ounce of steel-cut oats weighs 0.7055 oz, so the two readings differ by 29.5%. They coincide only for something with the density of water, and then only roughly.
Is this a US cup or a metric cup?
US customary: 236.59 mL, which is the cup every US recipe means. A metric cup is 250 mL, so the same cup of steel-cut oats would weigh 169.07 g instead of 160 g — 9.07 g more, or 5.67%. Australian and some European recipes use the metric cup, and the difference is large enough to matter in baking.
Do I need a scale for this, or will measuring cups do?
A scale, if the result matters. Volume measuring carries a spread of about 20% for steel-cut oats — roughly 32 g on a 160 g cup — while a domestic scale is accurate to a gram or two. For anything where the ratio of ingredients drives the outcome, bread and pastry above all, weigh it.
How many cups of steel-cut oats is 1 lb?
1 lb of steel-cut oats is 2.835 cups — 2.83495 cups to one pound, so 1 × 2.83495 = 2.835. Going that way is a division by 0.35274, or a multiplication by 2.83495 if you prefer.
Steel-cut oats in cups and pounds
| Cups | Pounds | Unrounded |
|---|---|---|
| 1/8 cup | 0.0440925 lb | 0.04409245244 |
| 1/4 cup | 0.0881849 lb | 0.08818490487 |
| 1/3 cup | 0.11758 lb | 0.1175798732 |
| 1/2 cup | 0.17637 lb | 0.1763698097 |
| 2/3 cup | 0.23516 lb | 0.2351597463 |
| 3/4 cup | 0.264555 lb | 0.2645547146 |
| 1 cup | 0.35274 lb | 0.3527396195 |
| 1 1/2 cup | 0.529109 lb | 0.5291094292 |
| 2 cup | 0.705479 lb | 0.705479239 |
| 3 cup | 1.05822 lb | 1.058218858 |
| 4 cup | 1.41096 lb | 1.410958478 |
Based on 160 g per cup of steel-cut oats. One cup of steel-cut oats is 0.35273962 pounds.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 160 g | 5.64 oz | 236.6 mL |
| 3/4 cup | 120 g | 4.23 oz | 177.4 mL |
| 2/3 cup | 106.7 g | 3.76 oz | 157.7 mL |
| 1/2 cup | 80 g | 2.82 oz | 118.3 mL |
| 1/3 cup | 53.33 g | 1.88 oz | 78.86 mL |
| 1/4 cup | 40 g | 1.41 oz | 59.15 mL |
| 1 tbsp | 10 g | 0.353 oz | 14.79 mL |
| 1 tsp | 3.333 g | 0.118 oz | 4.929 mL |
US customary measures: 1 cup = 236.59 mL, 1 tbsp = 14.79 mL, 1 tsp = 4.93 mL.
| Ingredient | Grams per cup | Ounces per cup | Density (g/mL) |
|---|---|---|---|
| Graham cracker crumbs | 142 g | 5.009 oz | 0.6002 |
| Rice flour | 158 g | 5.573 oz | 0.6678 |
| Potato starch | 160 g | 5.644 oz | 0.6763 |
| Steel-cut oats (this page) | 160 g | 5.644 oz | 0.6763 |
| Semolina | 167 g | 5.891 oz | 0.7059 |
| Uncooked quinoa | 170 g | 5.997 oz | 0.7185 |
| Dry couscous | 170 g | 5.997 oz | 0.7185 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.