Pounds of dry couscous to cups runs on one number, 2.6681904 cups per pound. 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 0.71855 g per mL, against 1.00 for water. A cup of water weighs 236.6 g and a cup of dry couscous weighs 170 g, so this ingredient is 71.85% as heavy as the same volume of water — the single fact the whole page rests on.
A cup of dry couscous is 170 g when it is measured the standard way, but how it gets into the cup changes the answer: between about 153 g and 204 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 dry couscous is bought rather than cooked, so this is the bag-size arithmetic: one pound is 2.668 cups, a 2 lb pack is 5.336 cups and a 5 lb sack is 13.34. That last figure is the one worth knowing before a large bake — it tells you whether one bag covers the recipe.
The condition this weight assumes: Before steaming. It roughly triples in volume once hydrated, which is why the dry weight is the useful one.
The formula
pounds- The amount of dry couscous you are converting, in pounds
2.66819041176- Cups per pound for dry couscous, from its density of 0.71855 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in pounds.
- It is multiplied by 2.66819041176, the cups-per-pound figure for dry couscous.
- The result appears in cups, with a second reading in tbsp beneath it.
- Use the measure table if you want a standard recipe quantity rather than a number you type in.
Worked examples
3/4 lb of dry couscous in cups
Take 3/4 lb of dry couscous: 0.75 × 2.6681904 gives 2.00114 cups. Doubling the batch takes it to 4.00229 cups, because the relationship is a straight proportion once the density is known.
1 1/2 lb of dry couscous in cups
1 1/2 lb of dry couscous weighs out at 4.00229 cups. Divide 4.00229 by 2.6681904 and you get back to 1 1/2 lb, which is the quickest check that the factor is the right way up.
3 lb of dry couscous in cups
3 lb of dry couscous weighs out at 8.00457 cups. Divide 8.00457 by 2.6681904 and you get back to 3 lb, which is the quickest check that the factor is the right way up.
How to read your score
Frequently asked questions
How many cups are in 1 lb of dry couscous?
One pound of dry couscous is 2.6681904 cups. Half that quantity is 1.3341 cups and double it is 5.33638 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of dry couscous not 236 g like water?
Because weight per cup depends on what is in the cup. Dry couscous has a density of 0.71855 g per mL where water has 1.00, so a cup of it weighs 170 g rather than 236.6 g. That is a difference of 66.6 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 dry couscous by roughly 20% — about 17 g either side of 170 g — because before steaming. Weighing removes the question entirely.
Is a fluid ounce of dry couscous 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 dry couscous weighs 0.7496 oz, so the two readings differ by 25%. 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 dry couscous would weigh 179.64 g instead of 170 g — 9.64 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 dry couscous — roughly 34 g on a 170 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 much does 2 cup of dry couscous weigh?
2 cup of dry couscous comes to 340 g, or 0.74957 pounds. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-pounds page does it in the direction the question is usually asked.
Dry couscous in pounds and cups
| Pounds | Cups | Unrounded |
|---|---|---|
| 1/4 lb | 0.667048 cup | 0.6670476029 |
| 1/2 lb | 1.3341 cup | 1.334095206 |
| 3/4 lb | 2.00114 cup | 2.001142809 |
| 1 lb | 2.66819 cup | 2.668190412 |
| 1 1/2 lb | 4.00229 cup | 4.002285618 |
| 2 lb | 5.33638 cup | 5.336380824 |
| 3 lb | 8.00457 cup | 8.004571235 |
| 5 lb | 13.341 cup | 13.34095206 |
Based on 170 g per cup of dry couscous. One pound of dry couscous is 2.6681904 cups.
| Measure | Grams | Ounces | Millilitres |
|---|---|---|---|
| 1 cup | 170 g | 6 oz | 236.6 mL |
| 3/4 cup | 127.5 g | 4.5 oz | 177.4 mL |
| 2/3 cup | 113.3 g | 4 oz | 157.7 mL |
| 1/2 cup | 85 g | 3 oz | 118.3 mL |
| 1/3 cup | 56.67 g | 2 oz | 78.86 mL |
| 1/4 cup | 42.5 g | 1.5 oz | 59.15 mL |
| 1 tbsp | 10.62 g | 0.375 oz | 14.79 mL |
| 1 tsp | 3.542 g | 0.125 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) |
|---|---|---|---|
| Steel-cut oats | 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 (this page) | 170 g | 5.997 oz | 0.7185 |
| Uncooked white rice | 185 g | 6.526 oz | 0.7819 |
| Uncooked brown rice | 190 g | 6.702 oz | 0.8031 |
| Dried lentils | 192 g | 6.773 oz | 0.8115 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.