Beef Sirloin vs Duck Breast (skinless)
Side-by-side macro comparison. Beef Sirloin vs Duck Breast (skinless) per their standard serving sizes.
Duck Breast (skinless)
per 100g cooked
Macro Comparison Table
| Macro | Beef Sirloin | Duck Breast (skinless) | Difference |
|---|---|---|---|
| Calories | 206 cal | 140 cal | +47% Beef |
| Protein | 27g | 23g | +17% Beef |
| Carbs | 0g | 0g | 0% Beef |
| Fat | 10g | 5g | +100% Beef |
Differences shown relative to Beef Sirloin. Positive = Beef Sirloin has more.
Quick Take
Beef Sirloin delivers 206 calories per serving with 27g protein, 0g carbs, and 10g fat. Duck Breast (skinless) delivers 140 calories with 23g protein, 0g carbs, and 5g fat. The most meaningful difference: Duck Breast (skinless) saves 66 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, Duck Breast (skinless) gives you 66 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), Duck Breast (skinless) delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Beef Sirloin brings 206 calories — useful when you're chasing a surplus and struggling to eat enough. Beef Sirloin 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 Beef Sirloin and Duck Breast (skinless) are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Beef Sirloin or Duck Breast (skinless)?
Beef Sirloin has more protein: 27g vs 23g per serving. That's a difference of 4g.
Which has fewer calories, Beef Sirloin or Duck Breast (skinless)?
Duck Breast (skinless) has 140 calories per serving vs 206 calories in Beef Sirloin — a difference of 66 calories.
Is Beef Sirloin or Duck Breast (skinless) better for keto?
Duck Breast (skinless) is the better keto choice at 0g carbs per serving vs 0g carbs in Beef Sirloin.
Is Beef Sirloin or Duck Breast (skinless) better for weight loss?
For weight loss, Duck Breast (skinless) gives you more calorie flexibility (66 cal less per serving). For preserving muscle during a deficit, Duck Breast (skinless) delivers more protein per calorie. Most people on cuts benefit from Duck Breast (skinless).
Which Is Better for Your Goal?
🔥 Weight Loss
Duck Breast (skinless)
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Beef Sirloin
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
tie
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:
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Other ways Beef Sirloin and Duck Breast (skinless) stack up:
Full Beef Sirloin guide • Full Duck Breast (skinless) guide • All comparisons