M&Ms (peanut) vs Onion
Side-by-side macro comparison. M&Ms (peanut) vs Onion per their standard serving sizes.
Macro Comparison Table
| Macro | M&Ms (peanut) | Onion | Difference |
|---|---|---|---|
| Calories | 250 cal | 44 cal | +468% M&Ms |
| Protein | 5g | 1.2g | +317% M&Ms |
| Carbs | 30g | 10g | +200% M&Ms |
| Fat | 13g | 0.1g | +12900% M&Ms |
Differences shown relative to M&Ms (peanut). Positive = M&Ms (peanut) has more.
Quick Take
M&Ms (peanut) delivers 250 calories per serving with 5g protein, 30g carbs, and 13g fat. Onion delivers 44 calories with 1.2g protein, 10g carbs, and 0.1g fat. The most meaningful difference: Onion saves 206 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, Onion gives you 206 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), Onion delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. M&Ms (peanut) brings 250 calories — useful when you're chasing a surplus and struggling to eat enough. M&Ms (peanut) delivers 5g 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
Onion fits cleanly into keto with only 10g carbs. M&Ms (peanut) at 30g carbs uses significantly more of your daily 20-30g carb budget.
Frequently Asked
Which has more protein, M&Ms (peanut) or Onion?
M&Ms (peanut) has more protein: 5g vs 1.2g per serving. That's a difference of 3.8g.
Which has fewer calories, M&Ms (peanut) or Onion?
Onion has 44 calories per serving vs 250 calories in M&Ms (peanut) — a difference of 206 calories.
Is M&Ms (peanut) or Onion better for keto?
Onion is the better keto choice at 10g carbs per serving vs 30g carbs in M&Ms (peanut).
Is M&Ms (peanut) or Onion better for weight loss?
For weight loss, Onion gives you more calorie flexibility (206 cal less per serving). For preserving muscle during a deficit, Onion delivers more protein per calorie. Most people on cuts benefit from Onion.
Which Is Better for Your Goal?
🔥 Weight Loss
Onion
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
M&Ms (peanut)
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Onion
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 M&Ms (peanut) and Onion stack up:
Full M&Ms (peanut) guide • Full Onion guide • All comparisons