Carbs in Mayo: The Quick Answer
Mayo 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 Mayo Keto Friendly?
Mayo 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 Mayo
Mayo 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 |
|---|---|---|
| Tuna or egg salad (as the base) | Lunch | Mayo-based salads are a keto classic — ~0.5g net carbs per tbsp |
| Deviled eggs (filling) | Appetizer | Mix with mustard and paprika — ~0.5g net carbs per egg half |
| Burgers and sandwiches (instead of ketchup) | Condiment swap | Mayo has ~0g carbs vs ketchup's 5g per tbsp — always choose mayo |
| Aioli base (add garlic and lemon) | Dipping sauce | Roasted garlic aioli with any protein — ~0g net carbs |
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 Mayo: 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.