One cup of sliced raw sprouts has about 5–7 grams of total carbohydrates, while 100 grams provide about 7–9 grams, including roughly 3–4 grams of fiber and an estimated 3–4 grams of net carbs.
This article explains how serving size, slicing, cooking, and added ingredients affect the carbohydrate content of Brussels sprouts, helping you plan portions while tracking carbs.
Brussels Sprouts Start at About 7–9 Grams of Carbs
A 100-gram measurement gives you the most consistent baseline for comparing foods. Raw Brussels sprouts contain roughly 7–9 grams of total carbohydrates, 3–4 grams of dietary fiber, and 2–3 grams of naturally occurring sugars. Vitamin C and vitamin K add nutritional value without changing the carbohydrate calculation.
That reference weight exceeds a typical plate portion. One medium sprout may weigh 20–30 grams, although that figure can vary, so four trimmed sprouts can weigh about 140 grams. Loose leaves and denser cores also change the total, which explains why counting whole sprouts alone does not give you a dependable nutrition estimate.
| Raw reference amount | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 100 grams | 7–9 grams | 3–4 grams | Roughly 3–4 grams |
| 1 cup, sliced | 5–7 grams | About 2–3 grams | Varies with packing |
| 1 medium sprout | About 2 grams | Under 1 gram | About 1–2 grams |
A Useful Comparison Point
Potatoes, corn, and most grains supply more carbohydrates for a similar serving. A baked potato can contain more than 30 grams of carbohydrate, and one cup of corn also lands near 30 grams. Your cup of raw sprouts remains below those figures, though preparation and portion weight still affect the final total.
USDA FoodData Central provides a consistent measurement basis, while NutritionData offers prepared-food entries for comparison. Your numbers can differ because whole sprouts, trimmed sprouts, and leftovers appear under different preparation conditions. USDA FoodData Central and the MyPlate resources can also help place the vegetable within a full meal.
USDA estimates include naturally occurring sugars, which means fiber must be considered before interpreting a FoodData Central number.
Total Carbohydrates and Net Carbohydrates Tell Different Stories
The 7–9 gram total already contains fiber, so you should not add those figures together. A label showing 8 grams of total carbohydrates and 4 grams of fiber produces an estimated 4-gram net-carb value by subtracting the fiber.
Your body does not digest all fiber, which accounts for the difference between total and net carbohydrates. Net carbs remain an estimate rather than a medical measurement because databases handle fiber and sugar alcohol calculations differently. The calculation still gives you a practical way to compare foods while managing blood sugar or following a low-carbohydrate eating plan.
| Component per 100 grams raw | Approximate amount | Role on the label |
|---|---|---|
| Total carbohydrates | 7–9 grams | Includes fiber, sugars, and starch |
| Dietary fiber | 3–4 grams | Subtracted for an estimated net-carb value |
| Net carbohydrates | 3–4 grams | Total carbs minus fiber |
| Total sugars | 2–3 grams | Naturally occurring and already included in total carbs |
The sugars listed on a nutrition panel are not extra carbohydrates added after the vegetable. They belong within the original total. A serving containing 2 grams of natural sugar still falls inside its 8-gram carbohydrate figure rather than sitting on top of it.
Check the serving size before comparing two labels. Five grams per cup and five grams per 100 grams describe different amounts of food.
Common Serving Sizes Put the Numbers in Perspective
A loosely filled cup of quartered or sliced sprouts supplies about 5–7 grams of total carbohydrates. Slice size, trimming, and packing determine whether your cup weighs 85 or 120 grams. A tightly packed cup can therefore contain more carbohydrates than one filled with airy pieces.
Your estimate depends on what you plan to eat. Weighing 100 grams after trimming gives you a controlled carbohydrate count. A cup works as a quick visual estimate only when the pieces have similar size and density. Restaurant portions can reach twice a standard cup, so tracking what arrives on your plate deserves extra care.
| Raw serving | Estimated weight | Estimated total carbs |
|---|---|---|
| Half cup, sliced | About 45–55 grams | Roughly 3–5 grams |
| One cup, loosely packed | About 85–100 grams | 5–7 grams |
| 100-gram reference | 100 grams | 7–9 grams |
| Two cups | About 170–200 grams | Roughly 12–18 grams |
Follow this sequence for a controlled portion count:
Once a raw serving is established, cooking can shift its weight and concentrate the carbohydrates available in each portion.
- Weigh after trimming. Remove loose leaves and the stem before placing the sprouts on your scale.
- Match the cut. Whole sprouts, halves, quarters, and thin slices produce different cup weights.
- Count the plate. Include sprouts beneath bacon, nuts, cheese, or sauce.
- Record leftovers. Measure the cooked amount that you actually place on your plate.
- Divide the recipe. Divide total recipe carbohydrates among the equal servings you make.
Cooking Changes Serving Weight and Carbohydrate Concentration
The higher cooked-cup total begins with moisture loss. Heat moves water out of Brussels sprouts and concentrates the carbohydrates in the remaining food. One cup of boiled sprouts can contain 8–12 grams of total carbohydrates even though the raw ingredients supplied fewer grams per cooked cup.
Boiling shows this change clearly. A medium sprout loses water, so a cup of boiled pieces can represent more starting vegetable than its volume suggests. Steaming retains more moisture, creating a heavier cooked cup with fewer carbohydrates per cup.
| Preparation | Cooked total carbs per cup | Main reason for variation |
|---|---|---|
| Steamed | Lower end of about 5–8 grams | Retains more water |
| Boiled | About 8–12 grams | Water loss concentrates carbohydrates |
| Roasted | Higher per serving weight | Drying raises concentration |
| Dried | Highest per ounce | Most water has been removed |
| Stir-fried | Varies with oil and sauce | Coating and evaporation alter the weight |
Roasted sprouts shrink as their moisture escapes. A restaurant order marked “one cup” can hold fewer actual sprouts than a steamed cup of the same volume. Weighing your finished portion removes that guesswork from the calculation.
Your body does not respond identically to every preparation. Steaming preserves volume and leaves the meal less concentrated. Roasting develops deeper flavor, yet a roasted cup carries more carbohydrates per serving weight. Your target and portion size carry more weight than the cooking method alone.
Added Ingredients Can Overshadow Natural Vegetable Carbs
A plain roasted side may contain about 10 grams of total carbohydrates, but a sweet glaze can raise the same serving above 20 grams. Weigh the sprouts before seasoning. Once you know that base number, each sauce and topping becomes a separate value in your meal count.
- Maple syrup: One tablespoon contributes roughly 7 grams of carbohydrates.
- Honey: One tablespoon adds about 6 grams of carbohydrates.
- Sugary glazes: The coating can supply more carbohydrates than the plain vegetable.
- Candied nuts: Sugar, syrup, and starchy nuts change a vegetable side into a dessert-like dish.
- Cheese sauces: Cream and flour can raise carbohydrates, fat, and sodium together.
- Breadcrumbs: A crunchy topping adds starch and increases the cooked serving weight.
Butter contributes almost no carbohydrate, so a pat of melted butter barely changes the total. A creamy dressing can add several grams, depending on its recipe. Bacon contributes little carbohydrate but changes the fat and sodium content, so it still belongs in your overall meal record.
Try a concrete example: 100 grams of plain roasted Brussels sprouts supplies about 8 grams of total carbohydrates. Add one tablespoon of maple syrup and 30 grams of candied pecans, and the dish reaches roughly 25 grams before a creamy dressing enters the bowl.
Those additions can quickly dominate the carbohydrate count, so a plainly prepared serving offers a more practical low-carbohydrate option.
Brussels Sprouts Can Fit a Low-Carbohydrate Meal
Plain sprouts contain fewer carbohydrates than potatoes, corn, pasta, bread, and rice. Their fiber also supports fullness, making a 75-gram portion workable beside protein and another non-starchy vegetable. Your total stays predictable only while portion weights and sauces remain accounted for.
For example, 75 grams of raw sprouts provides about 6 grams of total carbohydrates and roughly 3 grams of fiber. Add grilled chicken, broccoli, and olive oil, and the vegetable remains a small share of the meal’s carbohydrate load. Replacing it with a large serving of corn changes the plate substantially.
A measured 75- to 100-gram portion gives you a useful starting point. Adjust it to fit your personal carbohydrate target, blood-sugar plan, and appetite.
Make these changes when your limit is strict:
- Start at 75 grams. Weigh trimmed raw sprouts or their cooked equivalent.
- Track cooked weight. Account for water loss before estimating a cooked cup.
- Skip sweet coatings. Choose pepper, vinegar, herbs, mustard, or garlic instead.
- Measure sauces. Add each tablespoon to your carbohydrate total.
- Count the plate. Include potatoes, bread, rice, or sweetened dressing.
- Set your portion. Pair the vegetable with protein and other low-carbohydrate foods.
Freshness has a modest effect, while trimming, maturity, and recipe changes can move a database estimate by a gram or two. Your plate and tracking method remain the deciding factors, particularly when precision shapes your food choices.
Bottom Line
Use 5–7 grams of total carbohydrates for a cup of raw sliced sprouts or 7–9 grams per 100 grams as your starting estimate. Weigh trimmed portions, check cooked serving weight, and count every sauce or topping separately. A plain 75- to 100-gram portion pairs well with protein and non-starchy vegetables for many low-carbohydrate meals.
FAQ
How many carbohydrates are in one serving of Brussels sprouts?
A one-cup serving of sliced raw Brussels sprouts contains roughly 5–7 grams of total carbohydrates. A 100-gram serving provides about 7–9 grams, while a cooked cup can contain around 8–12 grams because moisture loss concentrates the carbohydrates.
Are Brussels sprouts low-carb?
With modest net carbs, plain Brussels sprouts rank below potatoes, corn, bread, rice, and many grains. A 100-gram raw serving has about 3–4 grams of net carbs after subtracting its fiber, so portion size and added sauces remain the main variables.
How many carbs are in 100 grams of Brussels sprouts?
A 100-gram portion of raw Brussels sprouts contains about 7–9 grams of total carbohydrates. That total includes roughly 3–4 grams of dietary fiber and 2–3 grams of naturally occurring sugars, leaving an estimated 3–4 grams of net carbs.
Do Brussels sprouts have more carbs when cooked?
A cooked cup can have a higher carbohydrate count than a raw cup because cooking removes water and concentrates the remaining nutrients. One cup of boiled sprouts can contain 8–12 grams of total carbs, while steamed or roasted versions vary with moisture loss and packing.
How much fiber is in a serving of Brussels sprouts?
Each 100-gram serving of raw Brussels sprouts provides about 3–4 grams of fiber. One loosely packed cup of sliced sprouts can provide roughly 2–3 grams, although slice size, trimming, and packing density can shift the measured amount.
Are Brussels sprouts healthy for a low-carb diet?
Their fiber, vitamins C and K, and modest net carbs make plain Brussels sprouts suitable for many low-carb diets. Limit sweet glazes and starch-heavy toppings, then count the serving alongside every sauce and side on your plate.
