Canned Tuna (in water) vs Optimum Nutrition Whey
Side-by-side macro comparison. Canned Tuna (in water) vs Optimum Nutrition Whey per their standard serving sizes.
Canned Tuna (in water)
per 1 can (142g drained)
Optimum Nutrition Whey
per 1 scoop
Macro Comparison Table
| Macro | Canned Tuna (in water) | Optimum Nutrition Whey | Difference |
|---|---|---|---|
| Calories | 130 cal | 120 cal | +8% Canned |
| Protein | 27g | 24g | +13% Canned |
| Carbs | 0g | 3g | -100% Canned |
| Fat | 1g | 1g | 0% Canned |
Differences shown relative to Canned Tuna (in water). Positive = Canned Tuna (in water) has more.
Quick Take
Canned Tuna (in water) delivers 130 calories per serving with 27g protein, 0g carbs, and 1g fat. Optimum Nutrition Whey delivers 120 calories with 24g protein, 3g carbs, and 1g fat. The most meaningful difference: they're within 10 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, Optimum Nutrition Whey gives you 10 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), Canned Tuna (in water) delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Canned Tuna (in water) brings 130 calories — useful when you're chasing a surplus and struggling to eat enough. Canned Tuna (in water) delivers 27g 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 Canned Tuna (in water) and Optimum Nutrition Whey are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Canned Tuna (in water) or Optimum Nutrition Whey?
Canned Tuna (in water) has more protein: 27g vs 24g per serving. That's a difference of 3g.
Which has fewer calories, Canned Tuna (in water) or Optimum Nutrition Whey?
Optimum Nutrition Whey has 120 calories per serving vs 130 calories in Canned Tuna (in water) — a difference of 10 calories.
Is Canned Tuna (in water) or Optimum Nutrition Whey better for keto?
Canned Tuna (in water) is the better keto choice at 0g carbs per serving vs 3g carbs in Optimum Nutrition Whey.
Is Canned Tuna (in water) or Optimum Nutrition Whey better for weight loss?
For weight loss, Optimum Nutrition Whey gives you more calorie flexibility (10 cal less per serving). For preserving muscle during a deficit, Canned Tuna (in water) delivers more protein per calorie. Most people on cuts benefit from Canned Tuna (in water).
Which Is Better for Your Goal?
🔥 Weight Loss
Canned Tuna (in water)
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Canned Tuna (in water)
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Canned Tuna (in water)
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 Canned Tuna (in water) and Optimum Nutrition Whey stack up:
Full Canned Tuna (in water) guide • Full Optimum Nutrition Whey guide • All comparisons