Carbs in Butter: The Quick Answer
Butter contains 0g of net carbs per 100g, calculated by subtracting 0.0g of dietary fiber from 0.0g of total carbohydrates. With 714.0 calories, 0.0g protein, and 78.6g fat per 100g, it is classified as Keto Friendly for carbohydrate content.
Net carbs — not total carbs — are what matter for keto and low-carb diets. Only net carbs raise blood sugar and affect insulin, which is why tracking them accurately is key to staying in ketosis. Use our Keto Macro Calculator to find your daily net carb limit based on your body and goals.
Is Butter Keto Friendly?
Butter is keto friendly with only 0g net carbs per 100g. It fits comfortably within the standard keto limit of 20–50g net carbs per day and can be included regularly on a ketogenic diet.
Best Low-Carb Pairings for Butter
Butter is already a smart low-carb choice. Here's how to build a great keto meal around it.
| Pair with | Best for | Why it works |
|---|---|---|
| Steak (basted or topped with compound butter) | Steak dinner | Garlic-herb butter melting over a steak — ~0g net carbs |
| Roasted vegetables | Side dish | Toss any low-carb veg in butter before roasting for crispier results |
| Eggs (scrambled in butter) | Breakfast | Better flavor and texture than oil — ~0g net carbs |
| Coffee (bulletproof style) | Morning drink | Butter + MCT oil blended into coffee — appetite suppressant |
How Net Carbs Are Calculated
Net carbs are calculated by subtracting dietary fiber (and sugar alcohols, if present) from total carbohydrates: Net Carbs = Total Carbs − Fiber. For Butter: 0.0g − 0.0g = 0g net carbs per 100g.
Dietary fiber is subtracted because it passes through the digestive system without being absorbed as glucose. It does not raise blood sugar or trigger an insulin response, making it irrelevant for carb counting on keto and low-carb diets.