Is Mayonnaise keto?
Keto-friendly 0.1 g net carbs per one tablespoon (14 g) — 1% of a 20 g keto day.
Short answer: Yes. One tablespoon (14 g) of mayonnaise: 0.1 g net carbs — 1% of a strict 20 g keto day — with 10.5 g fat and 0.1 g protein.
Log mayonnaise in KetoraFree. Weigh it once and Ketora remembers your portion.
Regular mayonnaise is egg yolk and oil, so it is almost pure fat with under 0.1 g of carbs per tablespoon. "Light" and some flavoured versions add sugar or starch to replace the fat, so they are not the same food.
How mayonnaise fits a keto carb budget
On a 20 g day you could eat about 200 servings before reaching the limit — in practice mayonnaise will never be what pushes you over.
Worked example. 14 g of mayonnaise = 0.1 g total carbs − 0 g fibre = 0.1 g net carbs, 10.5 g fat, 0.1 g protein and 95 kcal.
Buying a packaged or flavoured mayonnaise product? Run its label through the net carb calculator — added sugars change the picture quickly.
Nutrition facts
| Nutrient | Per 100 g | Per one tablespoon (14 g) |
|---|---|---|
| Calories | 680 kcal | 95 kcal |
| Fat | 74.8 g | 10.5 g |
| Protein | 1 g | 0.1 g |
| Total carbohydrate | 0.6 g | 0.1 g |
| Fibre | 0 g | 0 g |
| Net carbs | 0.6 g | 0.1 g |
Where the energy comes from:
How to eat mayonnaise on keto
- Choose full-fat mayonnaise and check the label for sugar; avocado-oil mayo has the same macros.
- Mix with lemon, garlic and herbs for a quick dip for vegetables or a dressing for tuna and egg salad.
Keto recipes with mayonnaise
Compared with other extras
Mayonnaise ranks #4 of 9 extras in our database by net carbs per 100 g (lowest first). The in-between foods people ask about most.
| Food | Net carbs / 100 g | Per serving |
|---|---|---|
| Pork rinds | 0 g | 0 g |
| Coffee (black) | 0 g | 0 g |
| Almond milk (unsweetened) | 0.3 g | 0.7 g |
| Hummus | 8.3 g | 2.5 g |
| Dark chocolate (70–85%) | 35 g | 7 g |
| Popcorn (air-popped) | 63.3 g | 15.2 g |
See all extras ranked by net carbs →
Frequently asked questions
How many net carbs are in mayonnaise?
Mayonnaise has about 0.6 g of net carbs per 100 g (0.6 g total carbohydrate minus 0 g fibre), and about 0.1 g per one tablespoon (14 g).
Can you eat mayonnaise on keto?
Yes. A typical serving uses 1% of a strict 20 g net-carb day.
Values are per 100 g of the raw or stated food, rounded, from USDA FoodData Central. Brands and varieties differ — check the label for packaged products.