How much protein is in 100g of flax seeds?
18g of protein, with 534 calories.
How Much Protein Is in Flax seeds?
Flax seeds has 18g of protein per 100g and 534 calories. Here is what that means per realistic portion, how it compares with similar foods, and how to use it to hit a daily protein target.
Protein in flax seeds
Flax seeds contains 18g of protein per 100g, alongside 534 calories. That works out to 3.4g of protein per 100 calories, which is a low protein density — this is not primarily a protein food.
Weigh what you actually eat: 100g is a reference amount, not a portion. Multiply 18g by your portion weight and divide by 100.
To reach 30g of protein from flax seeds alone you would need about 167g.
Flax seeds compared with similar foods
Same category, ranked by protein per 100g.
| Food | Protein | Calories |
|---|---|---|
| 🌿 Hemp seeds | 31g | 553 |
| 🎃 Pumpkin seeds | 30g | 559 |
| 🍉 Watermelon seeds (dried) | 28g | 557 |
| 🥜 Peanuts | 26g | 567 |
| 🥜 Peanut butter | 25g | 588 |
| 🌰 Almonds | 21g | 579 |
| 🌻 Sunflower seeds | 21g | 584 |
| 🌱 Flax seeds (ground) | 18g | 534 |
Per 100g.
Using flax seeds to hit a protein target
- Protein per 100g: 18g. Calories per 100g: 534. Quality: incomplete protein.
- Omega-3 + fiber bonus.
- Pair flax seeds with a denser protein source so the meal still clears 30g.
- Log it in the Protein Calendar and the daily total updates automatically.
Add up your whole meal
Type what you ate in plain words and Protein Hunter returns protein and calories for the full plate.
Try the Protein CalculatorCommon questions
How much flax seeds do I need for 30g of protein?
About 167g of flax seeds provides 30g of protein.
Is flax seeds a good protein source?
It contributes useful protein at 18g per 100g, but it works best alongside a denser source rather than as the main protein of a meal.
Keep reading
Protein in hemp seeds31g per 100g, 553 calories.Protein in pumpkin seeds30g per 100g, 559 calories.Protein CalculatorAdd this food to a full meal and get the total.What is Protein Hunter?
Protein Hunter is a protein and nutrition app with a database of 232 foods — from a leaf of kale to a wagyu steak — plus AI tools that answer protein questions, count a whole meal, build recipes to a macro target, and track what you actually eat.
- Search any food
- Count a full meal
- Recipes to your macros
- Scan a plate or label
Why it's different: the numbers are calculated from a fixed ingredient database rather than guessed, and when a target is not physically achievable the app says so instead of inventing a figure.
Start Hunting