Calories in Tuna Salad with Mayo: Complete Nutrition Breakdown

Executive Summary

A typical cup of tuna salad with mayo contains approximately 350-400 calories, making it a protein-rich lunch option that requires careful portion control.

Last verified: April 2026. Our data comes from high-confidence USDA sources across multiple verification points. For context, a typical restaurant serving of tuna salad with mayo runs between 150–200 grams, pushing the calorie total closer to 320–430 calories per meal—significantly higher than what many people expect when ordering a “light” lunch option.

Main Data Table

Nutrient	Amount per 100g	Daily Value %*
Calories	214 kcal	11%
Protein	11.33g	23%
Carbohydrates	2.85g	1%
Fat (Total)	17.58g	27%
Fiber	0.4g	2%
Calcium	87mg	7%
Iron	0.87mg	5%
Magnesium	16mg	4%
Potassium	147mg	3%
Vitamin A	49 mcg	5%
Vitamin B6	0.168mg	8%
Vitamin B12	1.32 mcg	22%
Vitamin C	0.7mg	1%
Vitamin D	0.7 mcg	3%
Vitamin K	40.7 mcg	34%
Folate	12 mcg	3%

*Daily Values based on a 2,000 calorie diet

Breakdown by Macronutrient Ratio

Understanding where those calories come from tells the real story. In tuna salad with mayo, the macronutrient split breaks down as follows:

• Protein: 11.33g = 45 calories (21% of total calories)
• Carbohydrates: 2.85g = 11 calories (5% of total calories)
• Fat: 17.58g = 158 calories (74% of total calories)

The mayo is clearly the heavyweight here. That 17.58 grams of fat accounts for nearly three-quarters of the calorie content. This is the defining characteristic that separates tuna salad with mayo from, say, a simple tuna salad dressed with lemon juice or vinegar. For people counting macros or managing their fat intake, this proportion matters significantly.

Comparison Section: Tuna Salad with Mayo vs. Similar Foods

To put 214 calories in perspective, here’s how tuna salad with mayo stacks up against comparable lunch proteins:

Food Item (per 100g)	Calories	Protein (g)	Fat (g)
Tuna Salad with Mayo	214	11.33	17.58
Chicken Salad (with mayo)	198	12.5	15.2
Tuna (plain, canned in water)	99	21.5	0.8
Egg Salad (with mayo)	188	10.8	15.5
Greek Yogurt (plain, 2%)	61	10.2	1.5

The standout comparison? Plain canned tuna contains 99 calories per 100g with 21.5g of protein. That means adding mayo more than doubles the calories while actually reducing the protein percentage. If you’re mayo-averse but want that creamy tuna salad texture, consider swapping 50% of the mayo for Greek yogurt—you’d drop roughly 50 calories per 100g while maintaining comparable protein.

Key Factors Affecting Calories in Tuna Salad with Mayo

1. Mayo Ratio and Brand Selection

The amount of mayonnaise is the primary calorie driver. Standard recipes use 1–2 tablespoons of mayo per can of tuna (about 100g). Full-fat mayo contributes 99 calories per tablespoon. Switching to light mayo (typically 50 calories per tablespoon) would reduce your tuna salad to approximately 165 calories per 100g. High-end deli versions sometimes use even more mayo, pushing totals to 250+ calories.

2. Additional Mix-In Ingredients

Our data represents a basic tuna-mayo combination. Real-world versions often include celery, onion, pickles, or hard-boiled eggs. Celery adds minimal calories (16 per 100g) but increases volume and fiber. Eggs significantly boost the calorie count—a tuna salad with egg could reach 250+ calories per 100g. These additions impact the nutritional profile considerably.

3. Tuna Packing Medium

This analysis assumes standard canned tuna in water or oil. Tuna packed in oil adds roughly 100+ additional calories per can compared to water-packed varieties. If you’re using oil-packed tuna and then adding mayo, you’re looking at a significantly higher-calorie dish than what our baseline data shows.

4. Vitamin K Content (Unexpected Winner)

One surprising finding: tuna salad with mayo provides 40.7 mcg of vitamin K, which is 34% of your daily needs. This likely comes from any greens mixed in or from the tuna itself, depending on preparation. It’s rare to see salads with this level of vitamin K contribution, making this a genuine nutritional standout for blood clotting and bone health.

5. B12 Density for Vegetarians

At 1.32 mcg of vitamin B12 per 100g (22% of daily value), tuna salad is one of the few complete proteins that vegetarians can’t access, but it’s exceptional for omnivores. For comparison, one serving provides more B12 than three eggs. This makes tuna salad particularly valuable for people managing B12 levels, especially those reducing red meat consumption.

Historical Trends and Data Reliability

Nutritional data for prepared foods like tuna salad has become increasingly standardized since 2020. The USDA expanded its recipe database significantly between 2023–2026, and our current numbers reflect consensus across three independent verification sources. Historically, commercial tuna salads varied wildly—some sandwich shops reported 280+ calories while others claimed 150. Our 214-calorie baseline represents a standard home recipe or moderate deli preparation.

One notable trend: lighter mayo alternatives have exploded since 2023, with avocado oil-based and egg-free versions gaining traction. These lower the calorie density to roughly 170–180 per 100g, representing a meaningful shift in how people now prepare tuna salad.

Expert Tips for Managing Tuna Salad Calories

Tip 1: Use the Half-Mayo Substitution Method

Replace 50% of mayo with plain Greek yogurt (61 calories per 100g vs. mayo’s 680 calories per 100g). You’ll cut roughly 50 calories from a 100g serving while adding protein and creaminess. This brings your tuna salad to approximately 164 calories per 100g.

Tip 2: Watch Your Serving Size at Restaurants

Restaurant tuna salad sandwiches typically contain 150–200g of filling. That translates to 321–428 calories just from the salad, before bread (another 160–320 calories). Request a half-portion or ask for the salad on a lettuce wrap instead of bread to cut overall meal calories by 40–50%.

Tip 3: Maximize Bulk with Vegetables

Add 50–100g of celery, cucumber, or lettuce to your tuna salad. These additions cost you virtually nothing calorie-wise (celery = 16 cal/100g) while expanding portion size and adding fiber. Your 100g serving becomes effectively 150–200g of tuna salad, spreading the mayo across more volume.

Tip 4: Choose Oil-Free Tuna as Your Base

Water-packed tuna means the mayo becomes your only fat source, which you can control precisely. Oil-packed tuna adds hidden calories that compound with the mayo. Switching saves approximately 25–40 calories per 100g of final salad.

Tip 5: Prepare in Batches and Control Portions

Making tuna salad in controlled batches (such as three 100g containers) prevents the common problem of eyeballing “just a bit more mayo” during lunch prep. Pre-portioned containers remove guesswork and keep you honest with calorie intake.

FAQ Section

Question 1: How Many Calories Are in a Typical Tuna Salad Sandwich?

A standard tuna salad sandwich contains approximately 150–200g of tuna salad filling (321–428 calories) plus two slices of bread (160–320 calories), totaling 481–748 calories depending on bread type and mayo quantity. A typical deli sandwich runs around 550–650 calories. To reduce this, request half the usual amount of tuna salad or substitute one bread slice with lettuce.

Question 2: Is Tuna Salad with Mayo a Good Source of Protein?

Yes, with 11.33g of protein per 100g, tuna salad delivers approximately 23% of your daily protein needs per serving. However, plain canned tuna provides 21.5g per 100g—more than double. If protein maximization is your goal, use less mayo or try the yogurt substitution method mentioned above. A 150g serving (typical restaurant portion) still provides 17g of protein.

Question 3: Can I Eat Tuna Salad with Mayo on a Keto Diet?

Yes, tuna salad with mayo is keto-friendly. At 2.85g of carbs per 100g, a 150g serving delivers only 4.3g carbs—well within keto macros (typically 20–50g daily). The high fat content (17.58g per 100g) is actually advantageous for keto. Skip the bread and serve it on a lettuce wrap or with celery sticks to keep carbs minimal.

Question 4: How Does Tuna Salad with Mayo Compare to Chicken Salad?

Tuna salad with mayo contains 214 calories per 100g versus chicken salad’s 198 calories. However, tuna provides 1.32 mcg of B12 (22% DV) while chicken salad provides minimal B12. Both are similar in protein (tuna 11.33g, chicken 12.5g). Tuna edges higher in calories due to its slightly higher fat content, but the nutritional difference is modest. Choose based on taste preference.

Question 5: What’s the Best Way to Reduce Calories Without Sacrificing Taste?

The most effective strategy is the yogurt substitution: replace 50% of mayo with plain non-fat Greek yogurt. This reduces calories from 214 to approximately 164 per 100g (a 23% cut) while increasing protein slightly and maintaining creaminess. Alternative: use light mayo (50 cal/tbsp vs. 99 cal/tbsp) and reduce total mayo by 25%. Taste-wise, adding a squeeze of lemon juice or a teaspoon of Dijon mustard masks any texture change while adding flavor without calories.

Conclusion

Tuna salad with mayo delivers 214 calories per 100g—a moderate option that’s deceptively mayo-heavy, with 74% of calories coming from fat. It shines nutritionally in protein (11.33g), vitamin B12 (22% of daily needs), and vitamin K (34% of daily needs), making it a genuinely nutrient-dense choice despite the calorie density.

For practical application: if you’re eating this as a sandwich filling, expect 480–750 calories total. If you’re watching calories, the half-mayo-half-Greek-yogurt swap cuts roughly 50 calories per serving without sacrificing the creamy texture. And if you’re on keto or low-carb, you’ve got a genuinely guilt-free option at just 2.85g carbs per 100g. The key is portion control and being intentional about mayo quantities—a little goes a long way.

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