Blueberries vs Grapefruit
Side-by-side macro comparison. Blueberries vs Grapefruit per their standard serving sizes.
Macro Comparison Table
| Macro | Blueberries | Grapefruit | Difference |
|---|---|---|---|
| Calories | 84 cal | 52 cal | +62% Blueberries |
| Protein | 1.1g | 0.9g | +22% Blueberries |
| Carbs | 21g | 13g | +62% Blueberries |
| Fat | 0.5g | 0.2g | +150% Blueberries |
Differences shown relative to Blueberries. Positive = Blueberries has more.
Quick Take
Blueberries delivers 84 calories per serving with 1.1g protein, 21g carbs, and 0.5g fat. Grapefruit delivers 52 calories with 0.9g protein, 13g carbs, and 0.2g fat. The most meaningful difference: Grapefruit saves 32 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, Grapefruit gives you 32 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), Grapefruit delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Blueberries brings 84 calories — useful when you're chasing a surplus and struggling to eat enough. Blueberries delivers 1.1g 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
Grapefruit fits cleanly into keto with only 13g carbs. Blueberries at 21g carbs uses significantly more of your daily 20-30g carb budget.
Frequently Asked
Which has more protein, Blueberries or Grapefruit?
Blueberries has more protein: 1.1g vs 0.9g per serving. That's a difference of 0.20000000000000007g.
Which has fewer calories, Blueberries or Grapefruit?
Grapefruit has 52 calories per serving vs 84 calories in Blueberries — a difference of 32 calories.
Is Blueberries or Grapefruit better for keto?
Grapefruit is the better keto choice at 13g carbs per serving vs 21g carbs in Blueberries.
Is Blueberries or Grapefruit better for weight loss?
For weight loss, Grapefruit gives you more calorie flexibility (32 cal less per serving). For preserving muscle during a deficit, Grapefruit delivers more protein per calorie. Most people on cuts benefit from Grapefruit.
Which Is Better for Your Goal?
🔥 Weight Loss
Grapefruit
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Blueberries
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Grapefruit
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 Blueberries and Grapefruit stack up:
Full Blueberries guide • Full Grapefruit guide • All comparisons