You can have both. High fiber, low carb foods include chia seeds, ground flaxseed, avocados, raspberries, blackberries, almonds, pecans, artichokes, Brussels sprouts, and a variety of non-starchy vegetables. These whole foods deliver meaningful fiber with fewer digestible carbohydrates than grains, legumes, or most fruits.
The key is portion size. A quarter-cup of chia seeds contains 24 grams of total carbohydrates, but 20 of those grams are fiber. That leaves only 4 grams of estimated net carbs. One cup of cooked Brussels sprouts provides 6 grams of fiber with just 5 net carbs.
This guide shows total carbohydrates and fiber for every food, not just a marketing-style net-carb number. You'll see exactly what you're eating, how much fiber you're getting, and how to build meals that meet both goals at once.
High-Fiber, Low-Carb Foods at a Glance
This table ranks 15 whole foods by their combination of meaningful fiber and limited estimated net carbohydrates. All values are verified through USDA FoodData Central.[1]
Estimated net carbohydrates = total carbohydrates minus dietary fiber. Net carbs is not an FDA-defined term. The estimate shown here subtracts dietary fiber from total carbohydrate for comparison, but individual responses and packaged-food calculations can vary.
| Food | Serving | Total Carbs (g) | Fiber (g) | Est. Net Carbs (g) | Protein (g) | Calories |
|---|---|---|---|---|---|---|
| Chia seeds | 2 tbsp | 12 | 10 | 2 | 4 | 138 |
| Ground flaxseed | 2 tbsp | 8 | 6 | 2 | 5 | 110 |
| Avocado | 1/2 medium | 9 | 7 | 2 | 2 | 161 |
| Raspberries | 1 cup | 15 | 8 | 7 | 1.5 | 64 |
| Blackberries | 1 cup | 14 | 8 | 6 | 2 | 62 |
| Almonds | 1 oz (23 nuts) | 6 | 4 | 2 | 6 | 164 |
| Pecans | 1 oz (19 halves) | 4 | 3 | 1 | 3 | 196 |
| Unsweetened coconut (shredded) | 1/4 cup | 7 | 5 | 2 | 2 | 140 |
| Artichoke hearts (cooked) | 1/2 cup | 9 | 5 | 4 | 3 | 45 |
| Brussels sprouts (cooked) | 1 cup | 11 | 6 | 5 | 4 | 56 |
| Broccoli (cooked) | 1 cup | 11 | 5 | 6 | 4 | 55 |
| Cauliflower (cooked) | 1 cup | 5 | 3 | 2 | 2 | 29 |
| Collard greens (cooked) | 1 cup | 9 | 5 | 4 | 4 | 49 |
| Asparagus (cooked) | 1 cup | 7 | 4 | 3 | 4 | 40 |
| Green beans (cooked) | 1 cup | 10 | 4 | 6 | 2 | 44 |
What Counts as High Fiber and Low Carb?
For this article, we used clear inclusion criteria. A food had to provide at least 3 grams of fiber in a practical serving and contain approximately 10 grams or fewer estimated net carbohydrates. The serving size had to be realistic, not a tablespoon of a food you'd normally eat by the cup.
The FDA sets the Daily Value for fiber at 28 grams.[2] Foods that supply at least 20% of that value per serving are considered high in fiber. Low-carbohydrate does not have one universal definition for an individual food. A food can be nutritious without meeting strict ketogenic limits. The amount you eat matters more than the label alone.
Some people follow a moderate low-carb plan of 50 to 100 grams of net carbs per day. Others follow stricter ketogenic eating at 20 to 50 grams. The foods in this guide work for both approaches, but portion control determines whether they fit your specific target.
The 15 Best High-Fiber, Low-Carb Foods
Each food below includes total carbohydrates, fiber, estimated net carbs, and practical meal ideas. Nutrition data is verified through USDA FoodData Central.
Seeds and Nuts
1. Chia Seeds
Serving: 2 tablespoons
Total carbs: 12g | Fiber: 10g | Est. net carbs: 2g | Protein: 4g | Calories: 138
Chia seeds deliver the most fiber per net carb of any food on this list. They absorb liquid and form a gel, making them ideal for puddings, smoothies, and yogurt toppings. Start with one tablespoon if you're not used to high-fiber foods.
2. Ground Flaxseed
Serving: 2 tablespoons
Total carbs: 8g | Fiber: 6g | Est. net carbs: 2g | Protein: 5g | Calories: 110
Flaxseed must be ground for your body to absorb its nutrients. It works well in protein shakes, stirred into oatmeal alternatives, or mixed into egg-based breakfast bowls. Whole flaxseed passes through undigested.
3. Almonds
Serving: 1 ounce (about 23 nuts)
Total carbs: 6g | Fiber: 4g | Est. net carbs: 2g | Protein: 6g | Calories: 164
Almonds are one of the most portable high-fiber, low-carb foods. A one-ounce serving fits in a small handful. Pair them with berries for a balanced snack or chop them over roasted vegetables.
4. Pecans
Serving: 1 ounce (about 19 halves)
Total carbs: 4g | Fiber: 3g | Est. net carbs: 1g | Protein: 3g | Calories: 196
Pecans have the fewest net carbs among tree nuts. They're higher in fat and calories than almonds, so measure portions carefully. Use them in salads, trail mixes, or as a crunchy topping for roasted Brussels sprouts.
5. Unsweetened Shredded Coconut
Serving: 1/4 cup
Total carbs: 7g | Fiber: 5g | Est. net carbs: 2g | Protein: 2g | Calories: 140
Unsweetened coconut provides more fiber than most people expect. Add it to chia pudding, mix it with nuts for a quick snack, or use it as a coating for baked chicken or fish. Avoid sweetened versions, which contain added sugar.
Fruit
6. Avocado
Serving: 1/2 medium avocado
Total carbs: 9g | Fiber: 7g | Est. net carbs: 2g | Protein: 2g | Calories: 161
Avocados are the only fruit that combines high fiber with healthy fats and minimal net carbs. Half an avocado works in salads, breakfast bowls, or as a side dish with eggs. The other half keeps well in the refrigerator with the pit still in.
7. Raspberries
Serving: 1 cup
Total carbs: 15g | Fiber: 8g | Est. net carbs: 7g | Protein: 1.5g | Calories: 64
Raspberries deliver more fiber per cup than almost any other berry. A full cup fits most low-carb plans, but measure carefully if you're tracking strictly. Use them in yogurt, chia pudding, or as a topping for low-carb pancakes.
8. Blackberries
Serving: 1 cup
Total carbs: 14g | Fiber: 8g | Est. net carbs: 6g | Protein: 2g | Calories: 62
Blackberries match raspberries in fiber content and have slightly fewer net carbs. They're sturdy enough to last several days in the refrigerator without turning mushy. Add them to salads, smoothies, or eat them plain as a snack.
Non-Starchy Vegetables
9. Artichoke Hearts (Cooked)
Serving: 1/2 cup
Total carbs: 9g | Fiber: 5g | Est. net carbs: 4g | Protein: 3g | Calories: 45
Artichoke hearts are one of the highest-fiber vegetables per serving. Use frozen or canned (in water, not oil) for convenience. Add them to salads, omelets, or roast them with olive oil and garlic.
10. Brussels Sprouts (Cooked)
Serving: 1 cup
Total carbs: 11g | Fiber: 6g | Est. net carbs: 5g | Protein: 4g | Calories: 56
Brussels sprouts provide more fiber than most cruciferous vegetables. Roasting them at high heat improves their flavor significantly. They pair well with bacon, balsamic vinegar, or chopped pecans.
11. Broccoli (Cooked)
Serving: 1 cup
Total carbs: 11g | Fiber: 5g | Est. net carbs: 6g | Protein: 4g | Calories: 55
Broccoli is one of the most versatile high-fiber vegetables. Steam it, roast it, or stir-fry it with garlic and olive oil. It works as a side dish, a salad base, or mixed into egg scrambles.
12. Cauliflower (Cooked)
Serving: 1 cup
Total carbs: 5g | Fiber: 3g | Est. net carbs: 2g | Protein: 2g | Calories: 29
Cauliflower has fewer total carbs than broccoli but also less fiber. It's popular in low-carb cooking as a rice or mash substitute. Roast it with curry powder or blend it into soups for added volume.
13. Collard Greens (Cooked)
Serving: 1 cup
Total carbs: 9g | Fiber: 5g | Est. net carbs: 4g | Protein: 4g | Calories: 49
Collard greens deliver more fiber than kale or spinach per cooked cup. They hold up well in soups, stews, and sautés. Remove the thick center stem before cooking to improve texture.
14. Asparagus (Cooked)
Serving: 1 cup
Total carbs: 7g | Fiber: 4g | Est. net carbs: 3g | Protein: 4g | Calories: 40
Asparagus is low in calories and provides solid fiber in a single-cup serving. Roast it with olive oil and lemon, grill it alongside steak, or chop it into omelets. Thicker spears have better texture after cooking.
15. Green Beans (Cooked)
Serving: 1 cup
Total carbs: 10g | Fiber: 4g | Est. net carbs: 6g | Protein: 2g | Calories: 44
Green beans are more accessible than some specialty vegetables and still provide meaningful fiber. Steam them and toss with butter and garlic, or roast them until slightly charred. Frozen green beans are just as nutritious as fresh.
Highest Fiber Foods With the Fewest Net Carbs
This smaller table ranks foods by fiber efficiency. The fiber-to-net-carb ratio is a practical comparison tool, not a recognized medical measurement.
| Food | Fiber per Serving (g) | Est. Net Carbs (g) | Fiber-to-Net-Carb Ratio | Best Use |
|---|---|---|---|---|
| Chia seeds (2 tbsp) | 10 | 2 | 5:1 | Puddings, smoothies, yogurt |
| Ground flaxseed (2 tbsp) | 6 | 2 | 3:1 | Shakes, breakfast bowls |
| Avocado (1/2 medium) | 7 | 2 | 3.5:1 | Salads, side dishes, toast alternative |
| Unsweetened coconut (1/4 cup) | 5 | 2 | 2.5:1 | Snack mixes, toppings |
| Cauliflower (1 cup cooked) | 3 | 2 | 1.5:1 | Rice substitute, mash, roasted |
High-Fiber, Low-Carb Foods by Goal
Best for Breakfast: Chia seeds, ground flaxseed, avocado, raspberries, blackberries. All five work in egg-based meals, yogurt bowls, or smoothies.
Best for Snacks: Almonds, pecans, raspberries, blackberries, unsweetened coconut. These require no preparation and travel well.
Best for Salads: Avocado, artichoke hearts, almonds, pecans, green beans, asparagus. Cooked vegetables can be chilled and added to salad greens.
Best for Smoothies: Chia seeds, ground flaxseed, raspberries, blackberries, unsweetened coconut. Blend with unsweetened almond milk or Greek yogurt.
Best for Constipation and Regularity: Chia seeds, ground flaxseed, raspberries, blackberries, Brussels sprouts, broccoli. Pair with adequate water intake for best results.
Best for High-Protein Meals: Almonds, ground flaxseed, Brussels sprouts, broccoli, collard greens, asparagus. These complement chicken, fish, or eggs without adding excess carbohydrates.
Best for Vegetarian Low-Carb Diets: Chia seeds, ground flaxseed, avocado, almonds, pecans, all non-starchy vegetables. These provide fiber without relying on grains or legumes.
Best for People Who Dislike Vegetables: Chia seeds, ground flaxseed, raspberries, blackberries, almonds. You can meet fiber targets without forcing yourself to eat large portions of greens.
Best for Meal Prep: Brussels sprouts, broccoli, cauliflower, collard greens, green beans, asparagus. All hold up well when cooked in advance and refrigerated for up to four days.
High-Fiber, Low-Carb Breakfast Ideas
Each breakfast below includes complete nutrition estimates. Verify ingredient brands and portions for accuracy.
1. Chia Pudding With Raspberries
3 tablespoons chia seeds, 1 cup unsweetened almond milk, 1/2 cup raspberries, 1/2 teaspoon vanilla extract
Total carbs: 26g | Fiber: 19g | Est. net carbs: 7g | Protein: 8g | Calories: 267
2. Greek Yogurt With Chia, Flax, and Blackberries
1 cup plain full-fat Greek yogurt, 1 tablespoon chia seeds, 1 tablespoon ground flaxseed, 1/2 cup blackberries
Total carbs: 17g | Fiber: 11g | Est. net carbs: 6g | Protein: 22g | Calories: 310
3. Avocado and Egg Bowl With Vegetables
2 large eggs scrambled, 1/2 medium avocado, 1 cup cooked broccoli, 1 tablespoon olive oil
Total carbs: 16g | Fiber: 10g | Est. net carbs: 6g | Protein: 20g | Calories: 456
4. Vegetable Omelet With Avocado
3 large eggs, 1/2 cup cooked asparagus, 1/4 cup artichoke hearts, 1/2 medium avocado
Total carbs: 13g | Fiber: 10g | Est. net carbs: 3g | Protein: 24g | Calories: 441
5. Low-Carb Smoothie With Chia and Berries
1 cup unsweetened almond milk, 2 tablespoons chia seeds, 1/2 cup raspberries, 1 scoop unflavored collagen protein (16g), ice
Total carbs: 20g | Fiber: 14g | Est. net carbs: 6g | Protein: 22g | Calories: 286
High-Fiber, Low-Carb Snack Ideas
These snacks require minimal preparation and fit most low-carb eating plans.
Chia Pudding: Mix 2 tablespoons chia seeds with 1/2 cup unsweetened coconut milk. Refrigerate for at least two hours. Top with cinnamon or a few berries.
Raspberries With Greek Yogurt: Combine 1/2 cup raspberries with 1/2 cup plain Greek yogurt. Add a drizzle of sugar-free sweetener if desired.
Avocado With Seasoning: Slice half an avocado, sprinkle with sea salt, black pepper, and red pepper flakes. Eat with a spoon.
Almonds and Blackberries: Measure 1 ounce of almonds and pair with 1/2 cup blackberries for a portable snack.
Celery or Peppers With High-Fiber Dip: Use raw celery or bell pepper strips with guacamole or a dip made from mashed avocado and ground flaxseed.
Ground-Flax Yogurt Cup: Stir 1 tablespoon ground flaxseed into 1 cup plain Greek yogurt. Add a small handful of pecans.
Unsweetened Coconut With Nuts and Seeds: Mix 2 tablespoons unsweetened shredded coconut with 1 tablespoon almonds and 1 tablespoon chia seeds.
For more practical ideas, see our full guide to high-fiber snacks.
How to Get Enough Fiber on a Low-Carb Diet
This one-day example delivers approximately 28 grams of fiber while staying under 50 grams of net carbs. All measurements are verified and include total carbohydrates, fiber, and protein.
Breakfast: Chia Pudding With Blackberries
3 tablespoons chia seeds, 1 cup unsweetened almond milk, 1/2 cup blackberries
Total carbs: 25g | Fiber: 19g | Est. net carbs: 6g | Protein: 8g | Calories: 276
Lunch: Grilled Chicken Salad With Avocado and Almonds
4 ounces grilled chicken breast, 2 cups mixed greens, 1/2 medium avocado, 1 ounce almonds, 2 tablespoons olive oil and vinegar
Total carbs: 17g | Fiber: 11g | Est. net carbs: 6g | Protein: 44g | Calories: 624
Snack: Greek Yogurt With Ground Flaxseed
1 cup plain full-fat Greek yogurt, 2 tablespoons ground flaxseed
Total carbs: 12g | Fiber: 6g | Est. net carbs: 6g | Protein: 23g | Calories: 330
Dinner: Baked Salmon With Brussels Sprouts and Cauliflower
5 ounces baked salmon, 1 cup roasted Brussels sprouts, 1 cup roasted cauliflower, 1 tablespoon olive oil
Total carbs: 16g | Fiber: 9g | Est. net carbs: 7g | Protein: 44g | Calories: 515
Daily Totals:
Total carbs: 70g | Fiber: 45g | Est. net carbs: 25g | Protein: 119g | Calories: 1,745
This plan exceeds the FDA's 28-gram fiber recommendation without relying on grains, legumes, or high-carb fruits. Adjust portion sizes based on your calorie and macronutrient goals.
Total Carbs vs. Net Carbs
Total carbohydrate is the regulated value on nutrition labels. It includes starch, sugar, and fiber. Net carbs is not an FDA-defined term.[2]
Subtracting fiber from total carbohydrates gives an estimate of digestible carbohydrates, but it's not a universal physiological measurement. Fiber is not absorbed like starch or sugar, but the calculation does not account for individual differences in digestion, fermentation, or gut bacteria.
Some packaged foods subtract sugar alcohols and certain added fibers when calculating net carbs. Not all sugar alcohols are completely unabsorbed. Erythritol is largely excreted unchanged, but maltitol and sorbitol can raise blood sugar in some people.[4]
People monitoring blood glucose should start with total carbohydrates and work with their healthcare provider. The American Diabetes Association advises using total carbohydrate as the primary reference for insulin dosing and meal planning.[4]
Net carbs offers a useful comparison between foods, but it's an estimate. Total carbohydrate is the regulated label value and the safest starting point for anyone managing blood sugar or following a medically supervised diet.
Common Low-Carb Fiber Mistakes
People transitioning to lower-carb eating often make predictable fiber errors. Here are the most common ones.
Cutting Out Beans, Grains, and Fruit Without Replacing Their Fiber: If you remove whole grains and legumes but don't add seeds, nuts, and non-starchy vegetables, fiber intake drops sharply. Plan replacements before eliminating entire food groups.
Eating Large Quantities of Chia or Flax Immediately: Both seeds are powerful fiber sources. Start with one tablespoon per day and increase gradually. Jumping to three tablespoons overnight can cause bloating, gas, or cramping.
Assuming Every Keto-Branded Snack Is Healthy: Low-carb bars, cookies, and crackers often use added fibers like inulin or chicory root. These can cause digestive discomfort in large amounts. Check the ingredient list and start with small portions.
Subtracting All Sugar Alcohols: Not all sugar alcohols behave the same way. Erythritol has minimal impact on blood sugar, but maltitol and sorbitol are partially absorbed. If you're tracking strictly, verify the specific type.
Ignoring Serving Size: A quarter-cup of chia seeds contains impressive fiber, but it also delivers 276 calories and 24 grams of total carbohydrates. Measure portions carefully, especially with calorie-dense seeds and nuts.
Depending Entirely on Processed Low-Carb Bread or Bars: These products can fit a low-carb plan, but they shouldn't replace whole-food fiber sources. Vegetables, seeds, and nuts provide vitamins, minerals, and phytonutrients that processed foods lack.
Increasing Fiber Without Fluids: Fiber absorbs water. If you increase fiber intake without drinking more water, constipation can worsen instead of improve. Aim for at least eight cups of water daily when eating 25 grams or more of fiber.
Treating Constipation as Proof That More Fiber Is Always Required: Constipation on a low-carb diet can result from dehydration, electrolyte imbalance, or insufficient fat intake, not just low fiber. Add magnesium-rich foods like leafy greens and nuts before automatically increasing fiber supplements.[3]
Can a Fiber Supplement Help on a Low-Carb Diet?
A fiber supplement can help close a gap when whole-food intake falls short, but it should not replace variety. Supplements lack the vitamins, minerals, and antioxidants that come with vegetables, seeds, and berries.
Fiber itself appears under total carbohydrate on nutrition labels. A supplement that delivers 5 grams of fiber contributes 5 grams to your total carbohydrate count, even if those grams are subtracted when calculating net carbs. This distinction matters for anyone tracking total carbohydrates for medical reasons.
Easy Fiber provides 5 grams of soluble prebiotic fiber per tablespoon with zero sugar. It contains a four-fiber blend: inulin, partially hydrolyzed guar gum (PHGG), acacia gum, and soluble corn fiber. This combination supports digestive health and feeds beneficial gut bacteria without adding digestible carbohydrates.
Start with one tablespoon per day and increase gradually. Soluble fiber can cause gas or bloating if introduced too quickly. Mix it into water, coffee, tea, or protein shakes. It dissolves completely and has no gritty texture.
Try Easy Fiber Today – Premium Soluble Liquid Fiber
5g of soluble fiber in just one tasty tablespoon, available in 2 delicious flavors. Ditch the harsh psyllium husk mixes and nasty, sugary gummies and get easy liquid fiber.
Shop Easy Fiber →If you're already eating seeds, vegetables, and berries daily but still falling short of 25 grams, a supplement makes sense. If your entire fiber intake comes from a powder, rethink your approach. Whole foods provide more than just fiber.
The Bottom Line
High-fiber, low-carb foods include chia seeds, ground flaxseed, avocados, raspberries, blackberries, almonds, pecans, and a wide variety of non-starchy vegetables. These whole foods deliver meaningful fiber with fewer digestible carbohydrates than grains, legumes, or most fruits.
Portions matter. A quarter-cup of chia seeds provides 20 grams of fiber but also 24 grams of total carbohydrates. One cup of Brussels sprouts delivers 6 grams of fiber with only 5 estimated net carbs. The amount you eat determines whether a food fits your plan.
Low-carb and ketogenic eating are not interchangeable terms. A moderate low-carb diet allows more flexibility with berries and vegetables than strict ketogenic eating. Choose the approach that matches your goals, not the one with the most restrictive marketing.
Total carbohydrate is the regulated label value. Net carbs is an estimate, not a scientifically standardized measurement. People managing blood glucose should use total carbohydrates and work with their healthcare provider.
Increase fiber gradually and drink plenty of water. Add whole-food sources first, then consider a supplement if you're consistently falling short. A balanced low-carb diet can easily deliver 25 to 30 grams of fiber per day without relying on grains or legumes.
