Ground Flaxseed:
Grams to Cups
By Stefan Ulrich · Last updated
Ground flaxseed (flax meal) weighs 148 grams per cup. Whole flaxseeds are denser at approximately 170 g/cup, but whole seeds pass through the digestive system intact — ground flax is the form used in baking and nutrition.
How much Ground Flaxseed weighs at each cup measure.
Convert Ground Flaxseed
1 cup = 148 grams
= — grams
= — cups
Quick reference
Measurement Table
| Cups | Grams | Ounces |
|---|---|---|
| 1 tsp | 3 g | 0.11 oz |
| 1 tbsp | 9 g | 0.32 oz |
| ⅛ cup | 19 g | 0.67 oz |
| ¼ cup | 37 g | 1.31 oz |
| ⅓ cup | 49 g | 1.73 oz |
| ½ cup | 74 g | 2.61 oz |
| ⅔ cup | 99 g | 3.49 oz |
| ¾ cup | 111 g | 3.92 oz |
| 1 cup | 148 g | 5.22 oz |
| 1¼ cups | 185 g | 6.53 oz |
| 1½ cups | 222 g | 7.83 oz |
| 2 cups | 296 g | 10.44 oz |
| 3 cups | 444 g | 15.66 oz |
About Ground Flaxseed
Ground flaxseed serves two main purposes in baking: as a nutritional booster (high in omega-3 fatty acids and fiber) and as a vegan egg substitute. The egg substitute ratio is identical to chia: 1 tablespoon ground flax (9 g) + 3 tablespoons water = 1 egg equivalent. Mix and wait 5 minutes for a gel to form.
Unlike chia, ground flax has a noticeable nutty, slightly earthy flavor that can affect delicate recipes. It works best in whole-grain breads, hearty muffins, oatmeal cookies, and smoothies where its flavor complements rather than competes.
Golden flaxseed and brown flaxseed weigh the same per cup. Golden has a milder flavor and lighter color, making it slightly more versatile in light-colored baked goods.
Ground flaxseed is extremely perishable due to its high omega-3 fat content. Once ground, it oxidizes rapidly — store in the freezer in an airtight container and use within 3 months. Whole flaxseeds last much longer (up to a year at room temperature) and can be ground as needed in a coffee grinder.
Tips for measuring Ground Flaxseed
- Ground flax: ~148 g/cup. Whole flax: ~170 g/cup.
- Flax egg: 1 tbsp ground flax + 3 tbsp water = 1 egg. Wait 5 min.
- Store ground flax in freezer — goes rancid within weeks at room temperature.
- Golden and brown flax weigh the same; golden has milder flavor.
Common mistakes
- Using whole flaxseeds in baking — they pass through undigested, no nutritional benefit
- Storing ground flax at room temperature — rancidity within 2–3 weeks
Frequently Asked Questions
- How many grams in a cup of Ground Flaxseed?
- 1 cup of Ground Flaxseed weighs 148 grams — the standard used in most American recipes. Use the converter above for any other amount.
- How many grams is 1 tablespoon of Ground Flaxseed?
- 1 tablespoon of Ground Flaxseed weighs about 9 grams. The full table above lists every common cup fraction.
- What's the most common mistake when measuring Ground Flaxseed?
- Using whole flaxseeds in baking — they pass through undigested, no nutritional benefit. Weighing on a kitchen scale avoids it entirely.
- Should Ground Flaxseed be measured cooked or dry?
- These values are for dry, uncooked ground Flaxseed. Cooked weights differ greatly because of absorbed water.