Mayonnaise is a concentrated condiment made primarily from oil, egg or egg-derived ingredients, and an acidic component such as vinegar or lemon juice. It adds richness to sandwiches, salads and sauces, but its calorie content can vary considerably.
The most useful way to track mayonnaise is to measure the amount actually eaten and use the calories per 100 g from the specific product.
Regular mayonnaise, light mayonnaise and homemade mayonnaise should not automatically be assigned the same nutrition values.
How many calories are in mayonnaise?
Traditional full-fat mayonnaise often provides approximately 650–750 kcal per 100 g. Reduced-fat and light varieties can contain substantially less, depending on their formulation.
For the calculations below, we use 680 kcal per 100 g as an illustrative value for regular mayonnaise.
| Mayonnaise type | Approximate calories per 100 g | Main consideration |
|---|---|---|
| Regular full-fat mayonnaise | 650–750 kcal | High proportion of oil |
| Light mayonnaise | Often 250–450 kcal | Depends on oil reduction and added water |
| Very low-fat mayonnaise-style dressing | Highly variable | May differ substantially from traditional mayo |
| Homemade mayonnaise | Recipe-dependent | Oil quantity and final yield determine calories |
| Vegan mayonnaise | Recipe-dependent | Egg-free does not necessarily mean low-fat |
These ranges are practical examples, not guaranteed values. Products marketed as light can have different compositions across countries and brands.
Always compare the nutrition information for the actual product.
Calories in a tablespoon of mayonnaise
A tablespoon is a volume measure, so its weight can vary with the product and how the spoon is filled.
For the following table, we assume one tablespoon contains 15 g of regular mayonnaise with 680 kcal per 100 g.
| Portion | Assumed weight | Estimated calories |
|---|---|---|
| 1 teaspoon | 5 g | 34 kcal |
| 2 teaspoons | 10 g | 68 kcal |
| 1 tablespoon | 15 g | 102 kcal |
| 2 tablespoons | 30 g | 204 kcal |
| 3 tablespoons | 45 g | 306 kcal |
| 50 g | 50 g | 340 kcal |
| 100 g | 100 g | 680 kcal |
These are calculated examples. A heaped tablespoon may weigh more than 15 g, while a thin spread on bread may weigh considerably less.
Formula: calories = kcal per 100 g × portion weight in grams ÷ 100.
For example, 22 g of mayonnaise containing 680 kcal per 100 g provides approximately 150 kcal.
Regular mayonnaise vs light mayonnaise
The largest nutritional difference is usually fat content.
Regular mayonnaise obtains much of its energy from oil. Light mayonnaise generally uses less oil and may contain more water, starches or other ingredients to maintain texture.
Consider two hypothetical products:
| Product | Calories per 100 g | Calories in 20 g |
|---|---|---|
| Regular mayonnaise | 680 kcal | 136 kcal |
| Light mayonnaise | 300 kcal | 60 kcal |
In this example, choosing 20 g of light mayonnaise instead of regular mayonnaise reduces the condiment's energy contribution by 76 kcal.
That does not mean every light mayonnaise contains 300 kcal per 100 g. Some are higher and others lower.
Check calories, fat, salt and the ingredient list rather than relying only on the word light.
Mayonnaise nutrition: fat, protein and carbohydrates
Traditional mayonnaise is primarily a source of fat.
An illustrative regular mayonnaise might contain approximately 70–80 g fat per 100 g, with relatively small amounts of protein and carbohydrate.
| Nutrient | Typical characteristic |
|---|---|
| Energy | High in regular mayonnaise |
| Fat | Main energy source, mostly from oil |
| Protein | Usually low |
| Carbohydrates | Often low in regular versions, variable in light products |
| Salt | Depends on formulation |
| Saturated fat | Depends partly on the oil used |
The type of oil influences the fatty-acid profile. Mayonnaise made with different vegetable oils can have different proportions of monounsaturated and polyunsaturated fats.
Fat is not inherently undesirable, but it is energy-dense. Each gram of fat provides approximately 9 kcal, compared with approximately 4 kcal per gram of protein or digestible carbohydrate.
For accurate macros, use the label rather than assigning one generic mayonnaise profile to every product.
Why mayonnaise calories vary
Several factors influence the energy density of mayonnaise:
- The percentage of oil.
- The type and amount of egg ingredients.
- Added water.
- Sugar and starch content.
- The use of yogurt or other lower-fat ingredients.
- The final weight and thickness of the sauce.
Two products may look similar but contain very different proportions of oil.
A homemade mayonnaise containing more oil will generally have a higher energy density than a diluted sauce made with less oil.
Homemade mayonnaise: a calculation example
To estimate calories in homemade mayonnaise, add the energy from every ingredient and divide by the weight of the finished sauce.
Consider an illustrative preparation:
| Ingredient | Weight | Approximate calories |
|---|---|---|
| Vegetable oil | 180 g | 1,591 kcal |
| Pasteurized egg yolk | 35 g | 113 kcal |
| Lemon juice | 20 g | 4 kcal |
| Mustard | 10 g | 7 kcal |
| Total | 245 g | About 1,715 kcal |
The example assumes all ingredients remain in the finished sauce and the final weight is 245 g.
1,715 ÷ 245 × 100 = approximately 700 kcal per 100 g.
A 15 g portion would contain approximately 105 kcal.
The exact values depend on the oil, egg product and other ingredients.
For food safety, use pasteurized egg products when preparing mayonnaise that will not be cooked. Refrigerate promptly and follow reliable storage guidance.
How many calories does mayonnaise add to a sandwich?
A sandwich's calorie content depends on all its ingredients, including the amount of mayonnaise.
Suppose a sandwich contains:
- Two slices of bread.
- A protein filling.
- Lettuce and tomato.
- 20 g regular mayonnaise.
At 680 kcal per 100 g, the mayonnaise contributes 136 kcal.
If the same sandwich uses 10 g mayonnaise, the condiment contributes 68 kcal.
The difference is 68 kcal, without changing the bread or filling.
This example does not establish the total sandwich calories. Bread, cheese, meat and other additions must be counted separately.
Mayonnaise in salads and dressings
Mayonnaise is often mixed into potato salad, coleslaw, tuna salad and other dishes.
The important quantity is the total mayonnaise added to the complete recipe, followed by the portion of the finished dish actually eaten.
For example, 80 g of mayonnaise at 680 kcal per 100 g contributes 544 kcal to an entire salad recipe.
If that salad is divided into four equal servings, the mayonnaise contributes approximately 136 kcal per serving.
Other ingredients still contribute additional calories.
If the salad is divided by weight rather than into equal portions, allocate the mayonnaise contribution proportionally.
Is mayonnaise suitable for a calorie-conscious diet?
Yes. Mayonnaise can fit into a calorie-conscious eating pattern.
Because regular mayonnaise is energy-dense, relatively small differences in portion size can noticeably affect the meal's calories.
Practical options include:
- Weighing the mayonnaise instead of estimating a large spoonful.
- Spreading a thinner layer on sandwiches.
- Comparing regular and light products by 100 g.
- Mixing a measured amount of mayonnaise with plain yogurt for a different dressing.
- Recording sauces separately from the main food.
There is no need to classify mayonnaise as universally good or bad. Portion size and the overall dietary pattern matter.
How to log mayonnaise accurately
For a packaged product:
- Select the exact mayonnaise brand or product.
- Check the nutrition declaration per 100 g.
- Weigh the amount added to the meal.
- Multiply the per-100-g calories by the consumed weight and divide by 100.
- If sharing a dish, divide the sauce according to the portions consumed.
For homemade mayonnaise, record the ingredient weights and the final sauce yield.
Do not count the same oil twice: if the oil is already included in the homemade mayonnaise recipe, it should not be added again as a separate ingredient.
Frequently asked questions
How many calories are in one tablespoon of mayonnaise?
At an assumed weight of 15 g and 680 kcal per 100 g, approximately 102 kcal. The actual result depends on the product and spoon weight.
Is light mayonnaise much lower in calories?
It can be, but the difference varies. Compare labels using the same portion weight.
Is vegan mayonnaise lower in calories?
Not necessarily. Egg-free mayonnaise can still contain a large proportion of oil.
Does homemade mayonnaise have fewer calories?
Not automatically. Homemade mayonnaise can be as energy-dense as commercial full-fat mayonnaise.
How many calories are in a teaspoon?
Using an illustrative 5 g teaspoon and 680 kcal per 100 g, approximately 34 kcal.
Sources and interpretation
- USDA FoodData Central — reference food-composition data for mayonnaise and ingredients.
- Regulation (EU) No 1169/2011 — European nutrition-labelling framework.
- USDA Food Safety and Inspection Service — general guidance on food handling and storage.
All numerical portions and homemade recipe values are illustrative calculations. For the mayonnaise you actually consume, prioritize the product label and measured portion.