Is Kohlrabi Keto-Friendly? Carbs, Benefits, and Low-Carb Recipes

If you’re on keto, you’ve probably memorized the carb counts of every vegetable in the grocery store. Cauliflower, zucchini, spinach — the usual rotation gets old fast. Then someone mentions kohlrabi, and you wonder: does this oddball vegetable actually fit within a ketogenic diet?

Short answer: yes. Kohlrabi is one of the most keto-friendly vegetables you can eat. It’s low in net carbs, high in fiber, and versatile enough to replace higher-carb staples like potatoes and turnips in dozens of recipes.

Here’s the full breakdown.

Kohlrabi Carb Count: The Numbers

One cup of raw kohlrabi (about 135 grams) contains:

• Calories: 36
• Total carbohydrates: 8.4 g
• Dietary fiber: 4.9 g
• Net carbs: 3.5 g
• Protein: 2.3 g
• Fat: 0.1 g
• Sugar: 3.5 g

That net carb count — 3.5 grams per cup — puts kohlrabi firmly in keto-safe territory. Most people following a standard keto diet aim for 20–50 grams of net carbs per day. A full cup of kohlrabi uses up less than 10% of even the strictest limit.

For a deeper look at the full nutritional profile, see our complete kohlrabi nutrition guide.

How Kohlrabi Compares to Other Keto Vegetables

To put those numbers in perspective, here’s how kohlrabi stacks up against common low-carb vegetables (net carbs per 1 cup raw):

Vegetable	Net Carbs (per cup)
Spinach	0.4 g
Zucchini	2.4 g
Cauliflower	2.8 g
Kohlrabi	3.5 g
Broccoli	3.6 g
Cabbage	3.3 g
Bell pepper	4.2 g
Turnip	4.4 g
Carrot	5.3 g
Potato	24.0 g

Kohlrabi sits right in the sweet spot — comparable to cauliflower and broccoli, far below starchy vegetables like potatoes and sweet potatoes. It’s lower in net carbs than turnips, which is notable because people often confuse the two.

Why Kohlrabi Works So Well on Keto

Beyond the low carb count, kohlrabi has several properties that make it particularly useful on a ketogenic diet.

High Fiber Content

Nearly 5 grams of fiber per cup. Fiber doesn’t raise blood sugar, doesn’t count toward net carbs, and helps with the digestive issues that many keto dieters experience in the first few weeks. Kohlrabi’s fiber is a mix of soluble and insoluble types, which supports gut health on both fronts.

Excellent Potato Substitute

This is the big one. Kohlrabi has a mild, slightly sweet flavor and a dense, crisp texture that, when cooked, softens into something remarkably potato-like. You can mash it, fry it, roast it, or gratin it — all the things you miss doing with potatoes on keto — at a fraction of the carbs.

Where a cup of mashed potato would cost you 30+ net carbs, a cup of mashed kohlrabi comes in under 5. That’s a game-changer for keto dieters who miss comfort food.

Nutrient Dense

Keto diets can sometimes run low on certain micronutrients, especially vitamin C and potassium. Kohlrabi helps fill both gaps:

• Vitamin C: 140% of daily value per cup (raw). This is more than an orange.
• Potassium: 473 mg per cup. Potassium is critical on keto because the diet increases potassium excretion through urine.
• Vitamin B6: Important for protein metabolism, which matters on a high-protein variant of keto.

Very Low Glycemic Impact

Kohlrabi has a low glycemic index (estimated around 20) and a negligible glycemic load. It won’t spike blood sugar or insulin, which is the entire point of eating keto in the first place.

5 Keto Kohlrabi Recipes

Here are five ways to work kohlrabi into your keto meal plan. All are low-carb, high-fat, and straightforward to make.

1. Keto Kohlrabi Fries

The single best keto use for kohlrabi. Cut into matchsticks, toss with olive oil or avocado oil, season with salt, garlic powder, and paprika, and bake at 425°F (220°C) for 25–30 minutes, flipping halfway.

The result is crispy on the outside, tender inside, and scratches the french fry itch without the carb load. One serving (half a large kohlrabi) has roughly 4 grams of net carbs.

For more detail on getting the crispiest results, check out our kohlrabi fries guide.

Per serving: ~120 calories, 7 g fat, 4 g net carbs, 2 g protein.

2. Creamy Keto Kohlrabi Gratin

Slice kohlrabi into thin rounds (a mandoline helps). Layer in a baking dish with:

• 1 cup heavy cream
• 1 cup shredded gruyère or sharp cheddar
• 2 cloves garlic, minced
• Salt, pepper, nutmeg

Bake covered at 375°F (190°C) for 40 minutes, then uncovered for 15 minutes until golden and bubbling. This is the keto version of potatoes au gratin, and honestly, most people can’t tell the difference.

Per serving (serves 4): ~310 calories, 26 g fat, 5 g net carbs, 12 g protein.

3. Kohlrabi Hash Browns

Peel and grate one large kohlrabi. Squeeze out excess moisture using a clean kitchen towel — this step is critical for crispiness. Mix with one beaten egg, salt, and pepper. Form into patties and fry in butter or bacon fat over medium-high heat for 4–5 minutes per side.

Serve alongside bacon and eggs for a full keto breakfast. The texture is remarkably close to traditional hash browns.

Per serving (2 patties): ~95 calories, 5 g fat, 4 g net carbs, 4 g protein.

4. Keto Kohlrabi Soup with Bacon

This is comfort food with negligible carbs.

• Dice 3 medium kohlrabi and sauté in butter with one diced onion until softened (about 10 minutes).
• Add 4 cups chicken bone broth and simmer for 20 minutes.
• Blend until smooth with an immersion blender.
• Stir in 1/2 cup heavy cream and season with salt, pepper, and a pinch of cayenne.
• Top each bowl with crumbled bacon and chives.

The result is thick, creamy, and rich — the kind of soup that makes you forget you’re on a restrictive diet.

Per serving (serves 4): ~220 calories, 16 g fat, 6 g net carbs, 9 g protein.

5. Raw Kohlrabi with Keto Dips

The simplest option. Peel a kohlrabi, slice into rounds or sticks, and use as a vehicle for high-fat dips:

• Guacamole — kohlrabi’s mild crunch pairs perfectly
• Cream cheese and everything bagel seasoning dip — mix 4 oz cream cheese with 1 tbsp everything seasoning
• Buffalo chicken dip — shredded chicken, cream cheese, hot sauce, blue cheese
• Bacon-ranch dip — sour cream, ranch seasoning, crumbled bacon

This works as a snack, appetizer, or light lunch. Kohlrabi sticks are sturdier than celery and less watery than cucumber, making them the ideal keto dipper.

Per serving (kohlrabi only): ~36 calories, 0 g fat, 3.5 g net carbs, 2 g protein.

Keto Meal Plan: Where Kohlrabi Fits

Here’s how a day of keto eating might look with kohlrabi worked in:

• Breakfast: Kohlrabi hash browns with two fried eggs and avocado (8 g net carbs)
• Lunch: Raw kohlrabi sticks with guacamole and sliced deli turkey (6 g net carbs)
• Dinner: Grilled steak with kohlrabi gratin and a side salad (9 g net carbs)
• Total: 23 g net carbs — well within standard keto limits

Common Keto Questions About Kohlrabi

Does cooking kohlrabi change the carb count?

Barely. Cooking doesn’t add or remove carbohydrates — it just changes the texture. Roasted, boiled, and raw kohlrabi all have roughly the same net carb content per gram. What changes the carb count is what you cook it with (cream, cheese, sauces).

Can I eat kohlrabi leaves on keto?

Yes. Kohlrabi leaves are even lower in carbs than the bulb — roughly 1 gram of net carbs per cup. They taste similar to collard greens and can be sautéed in butter or bacon fat. See our kohlrabi leaves guide for more ideas.

Is kohlrabi good for keto constipation?

It can help. The high fiber content (nearly 5 g per cup) supports bowel regularity, which is a common struggle during the first weeks of keto. Eating kohlrabi raw preserves the most fiber.

How much kohlrabi can I eat per day on keto?

There’s no strict limit, but practically, 1–2 cups of raw kohlrabi per day (3.5–7 g net carbs) fits easily into a keto macro plan without crowding out other foods.

Is kohlrabi better than cauliflower for keto?

They’re roughly equal in net carbs. Cauliflower is more versatile as a rice or pizza crust substitute. Kohlrabi is better as a potato replacement (fries, mash, gratin). Use both — variety prevents diet fatigue.

The Bottom Line

Kohlrabi is one of the best vegetables for keto. At 3.5 grams of net carbs per cup, it fits comfortably within ketogenic macros while offering high fiber, excellent micronutrients, and a texture that makes it the best low-carb potato substitute available.

If you’re bored of the cauliflower-zucchini rotation, kohlrabi is the vegetable to add next. Start with fries or mash — those two recipes alone might permanently change your keto meal plan.