How Much Is 1 Cup of Flaxseed in Ounces?
1 cup of flaxseed weighs 5.22 oz. This is based on flaxseed having a density of 148g per cup. Because cups measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 1 cup.
Formula and Step-by-Step
- Start with 1 cup of flaxseed
- 1 cup of flaxseed = 148g
- 1 × 148 = 148g
- Convert grams to ounces: 148 ÷ 28.3495 = 5.22 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Flaxseed are small and pack tightly. Pour them into the measuring cup and level off without shaking, which settles the seeds and increases the weight.
Flaxseed at Different Amounts
How flaxseed scales across common cups measurements. Your amount (1 cup) is highlighted.
For reference, 1 cup of flaxseed (148g) is close in weight to a baseball (145g).
Other Amounts of Flaxseed
| Cups | US Ounces | Metric Cup | Imperial Cup |
|---|---|---|---|
| 0.25 cups | 1.31 oz | 1.38 oz | 1.57 oz |
| 0.33 cups | 1.72 oz | 1.82 oz | 2.07 oz |
| 0.5 cups | 2.61 oz | 2.76 oz | 3.13 oz |
| 0.75 cups | 3.92 oz | 4.14 oz | 4.70 oz |
| 1 cup | 5.22 oz | 5.52 oz | 6.27 oz |
| 1.5 cups | 7.83 oz | 8.27 oz | 9.40 oz |
| 2 cups | 10.44 oz | 11.03 oz | 12.54 oz |
| 3 cups | 15.66 oz | 16.55 oz | 18.81 oz |
| 4 cups | 20.88 oz | 22.07 oz | 25.08 oz |
| 5 cups | 26.10 oz | 27.58 oz | 31.35 oz |
Understanding the Units
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.
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.