swap_horiz Need Cups to Ounces instead?

How Much Is 17.99 Ounces of Quinoa in Cups?

17.99 ounces of quinoa equals 3.00 cups. That's 510.01g, and Quinoa has a density of 170g per cup. Because ounces measure weight and cups measure volume, the result depends on the ingredient's density.

17.99 ounces of quinoa
=
3.00cups
Result using all cup standards info
3.00 cups (US) 2.84 cups (Metric Cup) 2.50 cups (Imperial Cup)
3.00

Formula and Step-by-Step

(ounces × 28.35g/oz) ÷ 170g/cup = cups
  1. Start with 17.99 ounces of quinoa
  2. Convert ounces to grams: 17.99 × 28.35 = 510.01g
  3. 1 cup of quinoa = 170g
  4. 510.01g ÷ 170g/cup = 3 cups

The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.

Measuring Tip

Uncooked and cooked grains have completely different weights per cup. These conversions are for uncooked/dry grains unless specified otherwise.

Quinoa at Different Amounts

How quinoa scales across common ounces measurements. Your amount (17.99 ounces) is highlighted.

4 oz0.67 cups5 oz0.83 cups6 oz1.00 cup8 oz1.33 cups10 oz1.67 cups12 oz2.00 cups16 oz2.67 cups17.99 oz3 cups

Other Amounts of Quinoa

Ounces US Cups Metric Cup Imperial Cup
1 ounce 0.17 cups 0.16 cups 0.14 cups
2 ounces 0.33 cups 0.32 cups 0.28 cups
3 ounces 0.50 cups 0.47 cups 0.42 cups
4 ounces 0.67 cups 0.63 cups 0.56 cups
5 ounces 0.83 cups 0.79 cups 0.69 cups
6 ounces 1.00 cup 0.95 cups 0.83 cups
8 ounces 1.33 cups 1.26 cups 1.11 cups
10 ounces 1.67 cups 1.58 cups 1.39 cups
12 ounces 2.00 cups 1.89 cups 1.67 cups
16 ounces 2.67 cups 2.53 cups 2.22 cups
17.99 ounces 3.00 cups 2.84 cups 2.50 cups

Understanding the Units

What is an Ounce?

An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.

What is a Cup?

In US cooking, a cup measures volume, not weight. One standard US cup holds 236.588 ml of liquid. Because different ingredients have different densities, a cup of one ingredient can weigh very differently from a cup of another.

Frequently Asked Questions

About 3.00 cups, based on quinoa having a density of 170g per cup. The exact amount depends on how the ingredient is measured and the specific product.
First convert ounces to grams (1 ounce = 28.3495g), then divide by 170 (grams per cup). For 17.99 ounces: 17.99 × 28.3495 = 510.01g, then 510.01 ÷ 170 = 3 cups.
For the most accurate results, weigh quinoa on a kitchen scale. If measuring by volume, spoon the ingredient into the measuring cup and level it off with a straight edge rather than scooping directly.
Weight-per-cup values vary because of differences in how the ingredient is measured (spooned vs scooped), grind size, moisture content, and settling during storage. Our values use standardized measurement methods from established culinary references.
Reverse the conversion: 3.00 cups × 170g/cup = 510.01g, then 510.01g ÷ 28.3495 = 17.99 ounces. Or use the Cups to Ounces converter.