Oatly Oat Milk vs Sourdough Bread
Side-by-side macro comparison. Oatly Oat Milk vs Sourdough Bread per their standard serving sizes.
Sourdough Bread
per 1 slice (36g)
Macro Comparison Table
| Macro | Oatly Oat Milk | Sourdough Bread | Difference |
|---|---|---|---|
| Calories | 120 cal | 93 cal | +29% Oatly |
| Protein | 3g | 4g | -25% Oatly |
| Carbs | 16g | 18g | -11% Oatly |
| Fat | 1g | 0.6g | +67% Oatly |
Differences shown relative to Oatly Oat Milk. Positive = Oatly Oat Milk has more.
Quick Take
Oatly Oat Milk delivers 120 calories per serving with 3g protein, 16g carbs, and 1g fat. Sourdough Bread delivers 93 calories with 4g protein, 18g carbs, and 0.6g fat. The most meaningful difference: they're within 27 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, Sourdough Bread gives you 27 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), Sourdough Bread delivers more grams of protein per calorie consumed.
For Bulking / Muscle Gain
For muscle gain, you want calories AND protein. Oatly Oat Milk brings 120 calories — useful when you're chasing a surplus and struggling to eat enough. Sourdough Bread delivers 4g 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
Oatly Oat Milk fits cleanly into keto with only 16g carbs. Sourdough Bread at 18g carbs uses significantly more of your daily 20g carb budget.
Frequently Asked
Which has more protein, Oatly Oat Milk or Sourdough Bread?
Sourdough Bread has more protein: 4g vs 3g per serving. That's a difference of 1g.
Which has fewer calories, Oatly Oat Milk or Sourdough Bread?
Sourdough Bread has 93 calories per serving vs 120 calories in Oatly Oat Milk — a difference of 27 calories.
Is Oatly Oat Milk or Sourdough Bread better for keto?
Oatly Oat Milk is the better keto choice at 16g carbs per serving vs 18g carbs in Sourdough Bread.
Is Oatly Oat Milk or Sourdough Bread better for weight loss?
For weight loss, Sourdough Bread gives you more calorie flexibility (27 cal less per serving). For preserving muscle during a deficit, Sourdough Bread delivers more protein per calorie. Most people on cuts benefit from Sourdough Bread.
Which Is Better for Your Goal?
🔥 Weight Loss
Sourdough Bread
Higher protein-to-calorie density + lower absolute fat = more satiety per calorie.
💪 Muscle Gain
Sourdough Bread
Higher absolute protein per serving better supports muscle protein synthesis.
🥑 Low-Carb / Keto
Oatly Oat Milk
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
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Other ways Oatly Oat Milk and Sourdough Bread stack up:
Full Oatly Oat Milk guide • Full Sourdough Bread guide • All comparisons