Beef Sirloin vs Chicken Breast
Side-by-side macro comparison. Beef Sirloin vs Chicken Breast per their standard serving sizes.
Macro Comparison Table
| Macro | Beef Sirloin | Chicken Breast | Difference |
|---|---|---|---|
| Calories | 206 cal | 165 cal | +25% Beef |
| Protein | 27g | 31g | -13% Beef |
| Carbs | 0g | 0g | 0% Beef |
| Fat | 10g | 3.6g | +178% 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. Chicken Breast delivers 165 calories with 31g protein, 0g carbs, and 3.6g fat. The most meaningful difference: Chicken Breast saves 41 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, Chicken Breast gives you 41 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), Chicken Breast 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. Chicken Breast delivers 31g 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 Chicken Breast are keto-friendly with under 10g carbs per serving.
Frequently Asked
Which has more protein, Beef Sirloin or Chicken Breast?
Chicken Breast has more protein: 31g vs 27g per serving. That's a difference of 4g.
Which has fewer calories, Beef Sirloin or Chicken Breast?
Chicken Breast has 165 calories per serving vs 206 calories in Beef Sirloin — a difference of 41 calories.
Is Beef Sirloin or Chicken Breast better for keto?
Chicken Breast is the better keto choice at 0g carbs per serving vs 0g carbs in Beef Sirloin.
Is Beef Sirloin or Chicken Breast better for weight loss?
For weight loss, Chicken Breast gives you more calorie flexibility (41 cal less per serving). For preserving muscle during a deficit, Chicken Breast delivers more protein per calorie. Most people on cuts benefit from Chicken Breast.
Which Is Better for Your Goal?
🔥 Weight Loss
Chicken Breast
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Chicken Breast
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:
→ Calculate My Macros (Free)Related Comparisons
Other ways Beef Sirloin and Chicken Breast stack up:
Full Beef Sirloin guide • Full Chicken Breast guide • All comparisons