Convert Cups to Grams: Flaxseed (whole)
Convert cups of flaxseed (whole) to grams with this complete reference table. 1 cup of flaxseed (whole) = 149g (USDA FoodData Central, spooned-and-leveled method). Use the table below for fractions from 1/8 cup up to 4 cups. For precision baking, weight measurements in grams are always more reliable than volume measurements in cups, because flaxseed (whole) density can vary by measuring technique.
Flaxseed (whole) Cups to Grams Table
| Cups | Grams |
|---|---|
| 1/8 cup | 18.6g |
| 1/4 cup | 37.3g |
| 1/3 cup | 49.7g |
| 1/2 cup | 74.5g |
| 2/3 cup | 99.3g |
| 3/4 cup | 111.8g |
| 1 cup | 149g |
| 1 1/4 cups | 186.3g |
| 1 1/2 cups | 223.5g |
| 2 cups | 298g |
| 3 cups | 447g |
| 4 cups | 596g |
Based on USDA FoodData Central data (1 US cup = 240ml = 16 tablespoons = 48 teaspoons). Note: Whole flaxseeds: 1 cup = 149g. Ground flaxseed (flax meal) is lighter: ~130g/cup. Ground flax is more digestible and bioavailable than whole. 1 tablespoon ground flax + 3 tablespoons water = 1 egg substitute (flax egg). USDA FDC 169414.
About Flaxseed (whole) Density
The density of flaxseed (whole) determines how much it weighs per unit of volume. At 0.621g/ml, 1 US cup (240ml) of flaxseed (whole) weighs 149g under USDA standard conditions.
Volume measurements can vary by ±10–20% depending on technique (sifted vs. spooned vs. scooped). For consistent baking results, use a kitchen scale with gram measurements whenever possible. The USDA standard (spooned-and-leveled) is the reference point for all values on this page.
Frequently Asked Questions
How many grams is 1 cup of flaxseed (whole)?
1 cup of flaxseed (whole) weighs 149 grams (USDA FoodData Central, spooned-and-leveled method, 1 US cup = 240ml).
How many grams is 1/2 cup of flaxseed (whole)?
1/2 cup of flaxseed (whole) weighs 75 grams.
How many grams is 1/4 cup of flaxseed (whole)?
1/4 cup of flaxseed (whole) weighs 37 grams.
Does measuring technique affect the weight of flaxseed (whole)?
Yes. Sifted flaxseed (whole) can weigh up to 20% less than packed or scooped. The USDA standard (spooned-and-leveled) of 149g/cup is the most reliable baseline.