Is mayonnaise keto?
A keto day can include mayonnaise because 1 tbsp (13.8 g) provides 0.1 g net carbs.
- Net carbohydrates
- The amount is 0.1 g
- Total carbohydrates
- The amount is 0.1 g
- Fiber
- The amount is 0 g
- Protein
- The amount is 0.1 g
- Fat
- The amount is 10.3 g
- Calories
- The amount is 94 kcal
For a 20 g keto day, this makes up 0%

Condiments and fats with fewer carbs
| Food | Serving | Net carbs (g) |
|---|
Using mayonnaise on a keto diet
One 1 tbsp (13.8 g) serving of mayonnaise contains 0.1 g net carbs, or 0% of a 20 g keto day.
With 0.1 g per serving, mayonnaise leaves plenty of room for other food on a keto day.
For that serving of mayonnaise, protein comes to 0.1 g, fat to 10.3 g and energy to 94 kcal.
Choose butter for fewer carbs than mayonnaise: each 1 tbsp (14.2 g) serving has 0 g net carbs.
Nutrition information for Salad dressing, mayonnaise, regular (FDC 171009) comes from USDA FoodData Central.