Ounces of uncooked quinoa to cups runs on one number, 0.1667619 cups per ounce. 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.
Put next to water — 1 g per mL exactly — uncooked quinoa measures 0.71855 g per mL. That ratio, 71.85%, is what separates this page from every other ingredient in the same units, and it is measured rather than defined.
A cup of uncooked quinoa 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.
One cup of uncooked quinoa is 5.997 oz. US kitchen scales usually step in eighths of an ounce, which is 3.54 g — around 2.08% of a cup of this ingredient, so the scale is precise enough for a full cup and coarse for a spoonful. That is why recipes mix the two systems: ounces for the bulk, spoons for the small amounts.
What the number depends on: Dry and rinsed. The seeds are small and round, so they pack closely.
The formula
ounces- The amount of uncooked quinoa you are converting, in ounces
0.166761900735- Cups per ounce for uncooked quinoa, from its density of 0.71855 g/mL
cups- The equivalent quantity in cups
How it works, step by step
- Enter the quantity in ounces.
- It is multiplied by 0.166761900735, the cups-per-ounce figure for uncooked quinoa.
- 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
2 oz of uncooked quinoa in cups
Take 2 oz of uncooked quinoa: 2 × 0.1667619 gives 0.333524 cups. Doubling the batch takes it to 0.667048 cups, because the relationship is a straight proportion once the density is known.
4 oz of uncooked quinoa in cups
4 oz of uncooked quinoa weighs out at 0.667048 cups. Divide 0.667048 by 0.1667619 and you get back to 4 oz, which is the quickest check that the factor is the right way up.
12 oz of uncooked quinoa in cups
Take 12 oz of uncooked quinoa: 12 × 0.1667619 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.
How to read your score
Frequently asked questions
How many cups are in 1 oz of uncooked quinoa?
One ounce of uncooked quinoa is 0.1667619 cups. Half that quantity is 0.083381 cups and double it is 0.333524 cups, so the figure scales straight up and down — there is no offset in this conversion, only the factor.
Why is a cup of uncooked quinoa not 236 g like water?
Because weight per cup depends on what is in the cup. Uncooked quinoa 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 uncooked quinoa by roughly 20% — about 17 g either side of 170 g — because dry and rinsed. Weighing removes the question entirely.
Is a fluid ounce of uncooked quinoa 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 uncooked quinoa 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 uncooked quinoa 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 uncooked quinoa — 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 uncooked quinoa weigh?
2 cup of uncooked quinoa comes to 340 g, or 11.993 ounces. This page runs that calculation in reverse — enter a weight and it returns the volume — and the cups-to-ounces page does it in the direction the question is usually asked.
Uncooked quinoa in ounces and cups
| Ounces | Cups | Unrounded |
|---|---|---|
| 1/2 oz | 0.083381 cup | 0.08338095037 |
| 1 oz | 0.166762 cup | 0.1667619007 |
| 2 oz | 0.333524 cup | 0.3335238015 |
| 3 oz | 0.500286 cup | 0.5002857022 |
| 4 oz | 0.667048 cup | 0.6670476029 |
| 6 oz | 1.00057 cup | 1.000571404 |
| 8 oz | 1.3341 cup | 1.334095206 |
| 12 oz | 2.00114 cup | 2.001142809 |
| 16 oz | 2.66819 cup | 2.668190412 |
Based on 170 g per cup of uncooked quinoa. One ounce of uncooked quinoa is 0.1667619 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) |
|---|---|---|---|
| Potato starch | 160 g | 5.644 oz | 0.6763 |
| Steel-cut oats | 160 g | 5.644 oz | 0.6763 |
| Semolina | 167 g | 5.891 oz | 0.7059 |
| Uncooked quinoa (this page) | 170 g | 5.997 oz | 0.7185 |
| Dry couscous | 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 |
Ordered by weight. The spread across this group is why a single generic cups-to-grams factor cannot work.