Impossible Burger vs Optimum Nutrition Whey
Side-by-side macro comparison. Impossible Burger vs Optimum Nutrition Whey per their standard serving sizes.
Impossible Burger
per 4oz patty, 113g
Optimum Nutrition Whey
per 1 scoop
Macro Comparison Table
| Macro | Impossible Burger | Optimum Nutrition Whey | Difference |
|---|---|---|---|
| Calories | 240 cal | 120 cal | +100% Impossible |
| Protein | 19g | 24g | -21% Impossible |
| Carbs | 9g | 3g | +200% Impossible |
| Fat | 14g | 1g | +1300% Impossible |
Differences shown relative to Impossible Burger. Positive = Impossible Burger has more.
Quick Take
Impossible Burger delivers 240 calories per serving with 19g protein, 9g carbs, and 14g fat. Optimum Nutrition Whey delivers 120 calories with 24g protein, 3g carbs, and 1g fat. The most meaningful difference: Optimum Nutrition Whey saves 120 calories per serving — meaningful over a week of meals. 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 120 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), Optimum Nutrition Whey delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Impossible Burger brings 240 calories — useful when you're chasing a surplus and struggling to eat enough. Optimum Nutrition Whey delivers 24g 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 Impossible Burger and Optimum Nutrition Whey are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Impossible Burger or Optimum Nutrition Whey?
Optimum Nutrition Whey has more protein: 24g vs 19g per serving. That's a difference of 5g.
Which has fewer calories, Impossible Burger or Optimum Nutrition Whey?
Optimum Nutrition Whey has 120 calories per serving vs 240 calories in Impossible Burger — a difference of 120 calories.
Is Impossible Burger or Optimum Nutrition Whey better for keto?
Optimum Nutrition Whey is the better keto choice at 3g carbs per serving vs 9g carbs in Impossible Burger.
Is Impossible Burger or Optimum Nutrition Whey better for weight loss?
For weight loss, Optimum Nutrition Whey gives you more calorie flexibility (120 cal less per serving). For preserving muscle during a deficit, Optimum Nutrition Whey delivers more protein per calorie. Most people on cuts benefit from Optimum Nutrition Whey.
Which Is Better for Your Goal?
🔥 Weight Loss
Optimum Nutrition Whey
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Optimum Nutrition Whey
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Optimum Nutrition Whey
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 Impossible Burger and Optimum Nutrition Whey stack up:
Full Impossible Burger guide • Full Optimum Nutrition Whey guide • All comparisons