400 Grams of Flaxseeds to Cups
400 grams of flaxseeds is a typical single-recipe amount, equal to 2.67 cups at a density of 150g per cup.
- Cups (US Customary)
- 2.67 (2⅔)
- Tablespoons
- 42.7
- Teaspoons
- 128.0
- Milliliters
- 631 ml
400 grams of flaxseeds = 2.67 cups (2⅔ cups / 42.7 tbsp / 128.0 tsp)
Flaxseeds has a density of approximately 150g per cup. Whole flaxseed. Ground flaxseed is closer to 120g per cup. Source: USDA FoodData Central. This is the figure used everywhere on this page, including the tablespoon and teaspoon values, so the numbers stay consistent whether you're reading the summary line, the table, or the FAQ answers below.
| Grams | Cups | Fraction | Tablespoons | Teaspoons |
|---|---|---|---|---|
| 350g | 2.33 | 2⅓ | 37.3 | 112.0 |
| 375g | 2.50 | 2½ | 40.0 | 120.0 |
| 400g | 2.67 | 2⅔ | 42.7 | 128.0 |
| 425g | 2.83 | 2⅞ | 45.3 | 136.0 |
| 450g | 3.00 | 3 | 48.0 | 144.0 |
How the 400g Figure Is Calculated
400g divided by 150g (the weight of one cup of flaxseeds) equals 2.67 cups. Multiplying that by 16 gives 42.7 tablespoons, and by 48 gives 128.0 teaspoons, since one cup always equals 16 tablespoons or 48 teaspoons regardless of the ingredient.
Flaxseeds is lighter than water, which weighs about 236g per cup. That's why 400g of flaxseeds takes up more volume (631ml) than the same weight of water would (401ml). For a side-by-side look at how other ingredients compare, see the 400 grams to cups page.
If Your Recipe Uses Metric or Imperial Cups
The 2.67 cup figure above uses the US Customary cup (236.588ml). Recipes written outside the US sometimes use a metric cup (250ml) or an imperial (uk) cup (284.131ml) instead. At 400g, that's 2½ metric cups or 2¼ imperial cups of flaxseeds, close to the US figure but not identical. The cup standard switch in the converter above recalculates this instantly for any gram amount.
Scaling 400g Up or Down
Doubling a recipe that calls for 400g of flaxseeds means weighing 800g, or measuring 5.33 cups if you're working by volume instead of weight. Halving it means 200g, or 1.33 cups. Weight scales exactly with simple multiplication; cup measurements compound any scooping error each time they're doubled or halved, so weighing is more reliable the more a recipe is scaled.
Flaxseeds vs. Other Nuts & Seeds
Within nuts & seeds, density still varies by ingredient. At 400g, almonds (143g per cup) measures 2¾ cups, while chia seeds (160g per cup) measures 2½ cups, compared to 2⅔ cups for flaxseeds. Swapping ingredients in a recipe by cup measurement alone, without adjusting for this difference, changes the actual weight used.
Where 400g of Flaxseeds Fits in a Recipe
- A flax egg substitute uses about 7g of ground flaxseed mixed with water.
- Baked goods often call for 30g to 50g mixed into the dry ingredients.
- Smoothies usually need just 10g to 15g.
How to Measure It Accurately
Nuts & Seeds
Spoon in loosely and level off. Avoid shaking the cup, which settles the seeds and packs in more than the recipe expects.
For exact results
Whole nuts and seeds measure differently than chopped or ground versions of the same ingredient, since chopping reduces air pockets between pieces and increases the weight per cup.
For every gram amount at once, the flaxseeds conversion chart lists flaxseeds across the full range from 1g to 1000g in one table.
Frequently Asked Questions
What is 400 grams of flaxseeds in cups?+
400 grams of flaxseeds is 2.67 cups (2⅔ cups), or 42.7 tablespoons.
How do I measure 400 grams of flaxseeds without a scale?+
Use 2⅔ cups, spooned in and leveled off with a straight edge. If you only have tablespoons, use 42.7 tablespoons instead.
Why is flaxseeds's gram-to-cup ratio different from other ingredients?+
Flaxseeds weighs 150g per cup because of its own density. Whole flaxseed. Ground flaxseed is closer to 120g per cup.
Does a metric or imperial cup change this 400g conversion?+
Yes, slightly. 400g of flaxseeds is 2½ metric cups or 2¼ imperial cups, versus 2⅔ US cups, since each cup standard holds a different volume.