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Walnuts are not high in carbs, as they contain only about 3 grams of net carbs per 1-ounce serving.
That makes them one of the lowest-carb nuts you can snack on.
If you’ve been asking “are walnuts high in carbs” while trying to keep your carb intake low, the short answer is no, they’re actually a smart choice.
Most of their calories come from healthy fats and protein, not carbohydrates.
In this post, we’ll break down the carb content in walnuts, compare them to other nuts, and show you how to enjoy them without wrecking your low-carb goals.
Let’s crack this open.
Are Walnuts High in Carbs? Here’s the Real Answer
No, walnuts are not high in carbs, and the numbers back this up clearly.
1. The Carb Count Per Serving
A 1-ounce serving of walnuts (about 14 halves) delivers roughly 4 grams of total carbs.
Of that, about 2 grams come from fiber, which your body doesn’t fully digest.
So the net carbs, which is what really matters for low-carb and keto diets, land around 2 to 3 grams.
That’s a tiny amount for such a filling, satisfying snack.
2. Most of the Calories Come From Fat
Walnuts are made up of about 65% fat, 15% protein, and only 14% carbohydrates.
That fat is mostly heart-healthy unsaturated fat, including omega-3s.
So when people ask “are walnuts high in carbs,” they’re usually surprised to learn that fat is doing all the heavy lifting here.
3. Fiber Lowers the Effective Carb Load
Fiber is a carbohydrate, but it doesn’t spike your blood sugar the way refined carbs do.
Because walnuts pack 2 grams of fiber per ounce, the carbs that actually affect your body are minimal.
That’s why walnuts are considered a low-carb nut.
How Walnuts Compare to Other Nuts
If you’re wondering whether walnuts are high in carbs compared to other nuts, here’s how they stack up.
1. Walnuts vs. Cashews
Cashews are one of the higher-carb nuts, with about 8 to 9 grams of net carbs per ounce.
Walnuts, by contrast, sit at just 2 to 3 grams.
So if you’re watching carbs, walnuts win this matchup easily.
2. Walnuts vs. Almonds
Almonds are also low-carb, around 3 grams of net carbs per ounce.
Walnuts and almonds are pretty close, but walnuts have slightly fewer net carbs.
Both are great choices, but walnuts edge ahead for omega-3 content.
3. Walnuts vs. Pecans and Macadamias
Pecans and macadamias are also low-carb nuts, sitting around 1 to 2 grams of net carbs per ounce.
So walnuts are not the absolute lowest, but they’re right there in the low-carb club.
The bottom line: walnuts are not high in carbs compared to most nuts.
Why Walnuts Fit Into Low-Carb Diets
Walnuts are not high in carbs, which is exactly why they fit so well into keto, paleo, and low-carb lifestyles.
1. They Keep You Full Without the Carbs
The fat and protein in walnuts help you feel satisfied for hours.
That means you’re less likely to reach for carb-heavy snacks later.
2. They Don’t Spike Blood Sugar
Because walnuts are low in carbs and high in fiber and fat, they have a minimal impact on blood sugar.
That makes them a friendly option for people managing diabetes or insulin resistance.
3. They Add Crunch to Low-Carb Meals
You can toss walnuts into salads, yogurt, or low-carb trail mix.
They also work great as a topping for baked goods made with almond or coconut flour.
So you get texture and flavor without worrying about the carbs.
4. Watch the Portion Size Anyway
Even though walnuts are not high in carbs, they are calorie-dense.
A handful is fine, but eating the whole bag can add up fast.
Stick to about 1 ounce per serving if you’re tracking your intake.
So, Are Walnuts High in Carbs?
Are walnuts high in carbs? No, walnuts are not high in carbs, and they’re actually one of the better nut choices for a low-carb diet.
With only 2 to 3 grams of net carbs per ounce, they’re a filling, nutritious snack that won’t throw off your carb goals.
Just keep an eye on portion sizes, since the calories can sneak up on you.
So go ahead and enjoy those walnuts, because they’re a low-carb win.