Mayonnaise vs Olive Oil
Side-by-side macro comparison. Mayonnaise vs Olive Oil per their standard serving sizes.
Macro Comparison Table
| Macro | Mayonnaise | Olive Oil | Difference |
|---|---|---|---|
| Calories | 94 cal | 119 cal | -21% Mayonnaise |
| Protein | 0.1g | 0g | 0% Mayonnaise |
| Carbs | 0.1g | 0g | 0% Mayonnaise |
| Fat | 10g | 14g | -29% Mayonnaise |
Differences shown relative to Mayonnaise. Positive = Mayonnaise has more.
Quick Take
Mayonnaise delivers 94 calories per serving with 0.1g protein, 0.1g carbs, and 10g fat. Olive Oil delivers 119 calories with 0g protein, 0g carbs, and 14g fat. The most meaningful difference: they're within 25 calories per serving, so calorie load is essentially equivalent. Both deliver similar protein density.
When to Pick Each
For Cutting / Weight Loss
When cutting on a tight calorie budget, Mayonnaise gives you 25 more calories of headroom per serving — that's room for an extra snack, more vegetables, or a higher-protein second portion. If protein density matters more (which it does for preserving muscle on a deficit), Olive Oil delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Olive Oil brings 119 calories — useful when you're chasing a surplus and struggling to eat enough. Mayonnaise delivers 0.1g of protein per serving, which directly feeds muscle protein synthesis. The best pick depends on whether you need more total calories or more usable protein.
For Keto / Low-Carb
Both Mayonnaise and Olive Oil are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Mayonnaise or Olive Oil?
Mayonnaise has more protein: 0.1g vs 0g per serving. That's a difference of 0.1g.
Which has fewer calories, Mayonnaise or Olive Oil?
Mayonnaise has 94 calories per serving vs 119 calories in Olive Oil — a difference of 25 calories.
Is Mayonnaise or Olive Oil better for keto?
Olive Oil is the better keto choice at 0g carbs per serving vs 0.1g carbs in Mayonnaise.
Is Mayonnaise or Olive Oil better for weight loss?
For weight loss, Mayonnaise gives you more calorie flexibility (25 cal less per serving). For preserving muscle during a deficit, Olive Oil delivers more protein per calorie. Most people on cuts benefit from Olive Oil.
Which Is Better for Your Goal?
🔥 Weight Loss
Mayonnaise
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Mayonnaise
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Olive Oil
Lower carbohydrate content fits keto and low-carb macros without burning your carb budget.
Both fit most balanced diets. These verdicts reflect macro-only comparisons — taste, satiety, cost, and personal preference also matter.
Find Your Personal Macros
The "right" food depends on your individual macro targets. Calculate yours in 60 seconds:
→ Calculate My Macros (Free)Related Comparisons
Other ways Mayonnaise and Olive Oil stack up:
Full Mayonnaise guide • Full Olive Oil guide • All comparisons