Flax seeds, Cups to Grams & Grams to Cups
1 cup of flax seeds = 168 grams · 100g = 0.6 cups
Whole flax seeds weigh about 168 grams per cup, but the body can only absorb their nutrients when they are ground. Ground flaxseed (flax meal) is lighter and fluffier per cup than whole seeds. Like chia, ground flax mixed with water makes a binding gel.
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Flax seeds cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 21 g | 0.74 oz | 2 |
| 1/4 | 42 g | 1.48 oz | 4 |
| 1/3 | 55.9 g | 1.97 oz | 5.33 |
| 1/2 | 84 g | 2.96 oz | 8 |
| 2/3 | 112 g | 3.95 oz | 10.7 |
| 3/4 | 126 g | 4.44 oz | 12 |
| 1 | 168 g | 5.93 oz | 16 |
| 1 1/2 | 252 g | 8.89 oz | 24 |
| 2 | 336 g | 11.9 oz | 32 |
| 3 | 504 g | 17.8 oz | 48 |
Flax seeds grams to cups table
Working the other way? Here's how many cups common gram weights of flax seeds come to, handy when a recipe lists flax seeds in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.15 | 0.88 oz | 2.38 |
| 50 g | 0.3 | 1.76 oz | 4.76 |
| 75 g | 0.45 | 2.65 oz | 7.14 |
| 100 g | 0.6 | 3.53 oz | 9.52 |
| 125 g | 0.74 | 4.41 oz | 11.9 |
| 150 g | 0.89 | 5.29 oz | 14.3 |
| 175 g | 1.04 | 6.17 oz | 16.7 |
| 200 g | 1.19 | 7.05 oz | 19 |
| 225 g | 1.34 | 7.94 oz | 21.4 |
| 250 g | 1.49 | 8.82 oz | 23.8 |
| 300 g | 1.79 | 10.6 oz | 28.6 |
| 350 g | 2.08 | 12.3 oz | 33.3 |
| 400 g | 2.38 | 14.1 oz | 38.1 |
| 500 g | 2.98 | 17.6 oz | 47.6 |
Flax seeds: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of flax seeds weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of flax seeds in each:
| Cup standard | Size | 1 cup flax seeds | Used in |
|---|---|---|---|
| US cup | 237 ml | 168 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 178 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 202 g | Older British recipes |
| Japanese cup | 200 ml | 142 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Flax seeds in grams
- ⅛ cup flax seeds = 21g
- ¼ cup flax seeds = 42g
- ⅓ cup flax seeds = 55.9g
- ½ cup flax seeds = 84g
- ⅔ cup flax seeds = 112g
- ¾ cup flax seeds = 126g
- 1 cup flax seeds = 168g
- 2 cups flax seeds = 336g
How many cups is 100g, 200g or 300g of flax seeds?
Because one cup of flax seeds weighs about 168 grams, you can convert any weight to cups by dividing by 168. So 100g of flax seeds is about 0.6 cups, 200g is about 1.19 cups, 250g is about 1.49 cups, and 300g is about 1.79 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure flax seeds accurately
For the most reliable baking results, weigh flax seeds on a kitchen scale rather than scooping by volume. One US cup of flax seeds weighs about 168 grams (5.93 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts flax seeds and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: Grind flax seeds just before using for the most nutrition, and store the meal in the fridge or freezer, as ground flax goes rancid fast.
Flax seeds conversions: common questions
How many grams are in a cup of flax seeds?
One US cup of flax seeds weighs approximately 168 grams (5.93 oz).
How many grams in half a cup of flax seeds?
Half a cup (½ cup) of flax seeds weighs approximately 84 grams.
How many grams in a quarter cup of flax seeds?
A quarter cup (¼ cup) of flax seeds weighs approximately 42 grams.
How do I convert flax seeds from cups to grams?
Multiply the number of cups by 168. For example, 2 cups of flax seeds = 336 grams, and ¾ cup = 126 grams.
How many cups is 100g of flax seeds?
100 grams of flax seeds is about 0.6 cups. 200g is about 1.19 cups and 300g is about 1.79 cups, since 1 cup weighs 168 grams.
How many grams in a metric (Australian) cup of flax seeds?
One 250 ml metric cup of flax seeds, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 178 grams, compared with 168 grams for a 236.6 ml US cup.