Fats and Oils

Mayonnaise calories

Mayonnaise has about 680 calories per 100 g and 1.0 g of protein. An estimated teaspoon (5 g) is about 34 kcal.

680kcal per 100 g

About 16% more calories per 100 g than the average of the 6 fats and oils in this list (586 kcal).

Calories per 100 g	680 kcal
Protein per 100 g	1.0 g
Category	Fats and Oils
USDA description	Salad dressing, mayonnaise, regular

Calories by portion

Portion	Weight	Calories	Weight basis
1 teaspoon	5 g	34 kcal	App estimate
1 tablespoon	14 g	95 kcal	App estimate

Household weights come from the app’s portion table, not necessarily USDA. Rows marked App estimate are estimates; your portion may differ. A serving is not a recommended amount to eat.

Calculate the amount you actually ate

For a measured 150 g of this same food and form: 680 × 150 ÷ 100 = about 1020 kcal. Use the per-100-g value with your actual weight; a piece or bowl in the table is only a starting estimate.

Check the USDA description above before choosing a match. Raw, cooked and dry entries are not interchangeable, and a branded or mixed dish may have different ingredients. Missing nutrients are not zero. Read our sources and calculation method.

Log it in seconds. In BiteJot AI you can say or type “mayonnaise”, or scan or snap it, then confirm the amount. Calories always come from a database like this one, never from the AI.

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Source: USDA FoodData Central, SR Legacy (FDC ID 171009), public domain. Values are averages and can differ for a specific brand, recipe or cut. Estimates only; not medical advice.