Black Beans vs Lentils
Side-by-side macro comparison. Black Beans vs Lentils per their standard serving sizes.
Black Beans
per 1 cup cooked (172g)
Macro Comparison Table
| Macro | Black Beans | Lentils | Difference |
|---|---|---|---|
| Calories | 227 cal | 230 cal | -1% Black |
| Protein | 15g | 18g | -17% Black |
| Carbs | 41g | 40g | +3% Black |
| Fat | 0.9g | 0.8g | +12% Black |
Differences shown relative to Black Beans. Positive = Black Beans has more.
Quick Take
Black Beans delivers 227 calories per serving with 15g protein, 41g carbs, and 0.9g fat. Lentils delivers 230 calories with 18g protein, 40g carbs, and 0.8g fat. The most meaningful difference: they're within 3 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, Black Beans gives you 3 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), Lentils delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Lentils brings 230 calories — useful when you're chasing a surplus and struggling to eat enough. Lentils delivers 18g 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
Lentils fits cleanly into keto with only 40g carbs. Black Beans at 41g carbs uses significantly more of your daily 20-30g carb budget.
Frequently Asked
Which has more protein, Black Beans or Lentils?
Lentils has more protein: 18g vs 15g per serving. That's a difference of 3g.
Which has fewer calories, Black Beans or Lentils?
Black Beans has 227 calories per serving vs 230 calories in Lentils — a difference of 3 calories.
Is Black Beans or Lentils better for keto?
Lentils is the better keto choice at 40g carbs per serving vs 41g carbs in Black Beans.
Is Black Beans or Lentils better for weight loss?
For weight loss, Black Beans gives you more calorie flexibility (3 cal less per serving). For preserving muscle during a deficit, Lentils delivers more protein per calorie. Most people on cuts benefit from Lentils.
Which Is Better for Your Goal?
🔥 Weight Loss
Lentils
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Lentils
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Lentils
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 Black Beans and Lentils stack up:
Full Black Beans guide • Full Lentils guide • All comparisons