How many carbs are in mayonnaise?
Mayonnaise (1 tbsp) has 0 g of total carbs and 0 g of fiber, which is 0 g of net carbs. Per 100 g: 0 g carbs, 0 g net carbs.
Carbs & keto check
Yes. Mayonnaise is keto-friendly: 0 g net carbs per serving (1 tbsp) and 0 g per 100 g.

Nutrition
Net carbs = total carbs − fiber. Values from the Keto.app food database.
| Serving | Net carbs | Carbs | Fiber | kcal | Protein | Fat |
|---|---|---|---|---|---|---|
| 1 tbsp (14 g) | 0 g | 0 g | 0 g | 100 | 0 g | 12 g |
From Keto.app data
Mayonnaise has been added to Keto.app food diaries 78,563 times over about 10 years.
Times logged by Keto.app users, over about 10 years.
FAQ
Mayonnaise (1 tbsp) has 0 g of total carbs and 0 g of fiber, which is 0 g of net carbs. Per 100 g: 0 g carbs, 0 g net carbs.
Yes. Mayonnaise is keto-friendly: 0 g net carbs per serving (1 tbsp) and 0 g per 100 g.
One 1 tbsp uses 0% of a 20 g net carb day.
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