Carbs in Mayo
Keto-friendlyHow many carbs are in mayo?
Mayo has 8.4g net carbs per 100g — 8.5g total carbs minus 0.1g fiber — plus 0.6g protein, 32.9g fat, and 334 calories. With this carb count, mayo fits a keto or low-carb diet (usually 20–50g net carbs per day) in normal portions. Values are per per 100 g, sourced from USDA FoodData Central; net carbs are computed by CarbMeNot.
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Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is mayo keto-friendly?
Yes, mayo can fit a keto diet in moderate portions. It has 8.4g net carbs per 100g (8.5g total carbs − 0.1g fiber). On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other foods and meals.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 100 g (3.5 oz) | 8.4g | 8.5g | 0.6g | 334 |
| 1 oz (28 g) | 2.4g | 2.4g | 0.2g | 94 |
How many calories are in mayo?
Mayo has 334 calories per 100g. That's alongside 0.6g protein, 32.9g fat, and 8.4g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 334 |
| Total carbs | 8.5g |
| Net carbs | 8.4g |
| Fiber | 0.1g |
| Sugar | 4.2g |
| Sugar alcohols | 0g |
| Protein | 0.6g |
| Fat | 32.9g |
| Sodium | 633mg |
| Potassium | 52mg |
Source: USDA FoodData Central (SR Legacy). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in mayo?
- Mayo has 8.5g of total carbs and 8.4g of net carbs per 100 grams.
- How many net carbs are in mayo?
- Mayo has 8.4g of net carbs per 100 grams (total carbs 8.5g minus 0.1g fiber).
- Is mayo keto-friendly?
- Yes, mayo can fit a keto diet in moderate portions. It has 8.4g net carbs per 100g (8.5g total carbs − 0.1g fiber). On a standard keto diet (20–50g net carbs per day), that leaves plenty of room for other foods and meals.
- How many calories are in mayo?
- Mayo has 334 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.