Grams to Cups: Flax Seeds
If your recipe is written in cups but your scale reads grams — or the other way round — this page solves the conversion for flax seeds. One cup of flax seeds weighs about 150 grams, which works out to a density of 0.63 g/ml. From there, half a cup is roughly 75 g, a quarter cup about 38 g, and one tablespoon about 9 g.
Converting between weight and volume depends on density, and density is specific to each ingredient: a cup of flax seeds does not weigh the same as a cup of flour or sugar. That is why this tool uses the measured density of flax seeds, taken from the USDA FoodData Central database, rather than a one-size-fits-all figure.
Cooking measurement converter — Flax Seeds
Result
0.667 cups
Common measures — Flax Seeds
| Measure | Grams |
|---|---|
| 1 cup | 150 g |
| ¾ cup | 113 g |
| ½ cup | 75 g |
| ⅓ cup | 50 g |
| ¼ cup | 38 g |
| 1 tbsp | 9.4 g |
| 1 tsp | 3.1 g |
Data source: USDA FoodData Central
How to measure flax seeds accurately
For flax seeds, spoon it into the cup and level it off; do not shake or tap the cup, which settles the contents and changes the weight. Weighing in grams is still the most reliable method when the amount matters.
Frequently asked questions
How many grams are in a cup of flax seeds?
One cup of flax seeds weighs about 150 grams. Half a cup is roughly 75 grams and a quarter cup about 38 grams.
How many cups is 100 grams of flax seeds?
100 grams of flax seeds is about 0.67 cups. Use the calculator above for any other amount.
Where does this value come from?
From the ingredient's measured density (0.63 g/ml), referenced to the USDA FoodData Central database. Bear in mind the real weight can vary slightly with brand and moisture.
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