Is pesto keto?
Each 1/4 cup (63 g) serving of pesto fits within measured portions and has 5.3 g net carbs.
- Net carbohydrate content
- 5.3 g
- Total carbohydrates
- 6.4 grams
- Fiber
- 1.1 grams
- Protein
- 6.2 grams
- Fat
- 23.7 grams
- Calories
- 263 kilocalories
That is 26% of one 20 g keto day.

Condiments and fats with fewer carbs
| Food | Serving | Net carbs (g) |
|---|---|---|
| Mayonnaise | 1 tbsp (13.8 g) | 0.1 |
Using pesto on a keto diet
Each 1/4 cup (63 g) serving of pesto contains 5.3 g net carbs, equal to 26% of a 20 g keto day.
Pesto fits within measured portions at 5.3 g per serving: 3 servings would use the entire 20 g daily limit.
In that same serving of pesto, there is 6.2 g of protein, 23.7 g of fat and 263 kcal.
To calculate net carbs, subtract pesto's 1.1 g fiber from its 6.4 g total carbs.
For a lower-carb choice than pesto, butter offers 0 g net carbs in each 1 tbsp (14.2 g) serving.
Nutrition details: USDA FoodData Central lists ready-to-serve refrigerated pesto sauce (FDC 171579)