Protein Shake vs Oat Milk: Nutrition Comparison
Which is healthier? Compare calories, protein, carbs, and more
Complete side-by-side nutrition comparison per 100g serving | Updated 2026
Which is Healthier?
Protein Shake is generally healthier
Protein Shake comes out ahead in this comparison, winning in 3 out of 5 key nutritional categories. It has more protein (20g vs 1g), more fiber (1g vs 0.8g), less sugar (2g vs 3.2g), making it the better choice for most health goals.
Quick Summary
Fewer Calories
Oat Milk
47 kcal
More Protein
Protein Shake
20g
More Fiber
Protein Shake
1g
Less Sugar
Protein Shake
2g
Visual Comparison
Side-by-Side Nutrition Table
| Nutrient | Protein Shake | Oat Milk | Difference |
|---|---|---|---|
| Calories | 103kcal | 47kcal✓ | +56.0kcal |
| Protein | 20g✓ | 1g | +19.0g |
| Carbohydrates | 3.5g✓ | 7.8g | -4.3g |
| Fat | 1.5g | 1.5g | 0.0g |
| Fiber | 1g✓ | 0.8g | +0.2g |
| Sugar | 2g✓ | 3.2g | -1.2g |
| Sodium | 100mg | 36mg✓ | +64.0mg |
Serving Size Comparison
All values above are per 100g. Here's how they compare in common serving sizes:
Protein Shake
Oat Milk
Diet Compatibility
Protein Shake
Oat Milk
When to Choose Protein Shake
- ✓Higher in protein (20g vs 1g)
- ✓More fiber (1g vs 0.8g)
- ✓Lower in carbs (3.5g vs 7.8g)
- ✓Less sugar (2g vs 3.2g)
Common Uses
When to Choose Oat Milk
- ✓Lower in calories (47 vs 103)
- ✓Lower sodium (36mg vs 100mg)
Common Uses
Protein Shake vs Oat Milk: Nutritional Analysis
Protein Shake is more calorie-dense at 103 calories per 100g compared to 47 for Oat Milk, a difference of 56 calories. On the protein front, Protein Shake delivers more with 20g per 100g versus 1g, which matters for muscle maintenance, satiety, and overall metabolic health. These differences become meaningful when you consider how each food fits into your daily dietary pattern rather than looking at any single nutrient in isolation.
Macronutrient Breakdown
The macronutrient profiles of Protein Shake and Oat Milk tell different nutritional stories. Protein Shake provides 3.5g of carbohydrates, 1.5g of fat, and 1g of fiber per 100g, while Oat Milk contains 7.8g carbs, 1.5g fat, and 0.8g fiber. The higher fiber content in Protein Shake supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety. Sugar content also differs: Protein Shake contains 2g while Oat Milk has 3.2g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.
Key Takeaways
- For weight management: Oat Milk is the lower-calorie choice at 47 cal/100g, making it more suitable for calorie-controlled diets.
- For muscle building: Protein Shake provides more protein (20g/100g), supporting muscle repair and growth.
- For sustained energy: Protein Shake offers more fiber (1g/100g), which slows digestion and provides steadier energy release.
- Overall: Neither food is universally "better" than the other. The right choice depends on your specific nutritional goals, meal context, and dietary preferences. Both can play a role in a balanced diet.
Frequently Asked Questions
Which has more calories, Protein Shake or Oat Milk?
Protein Shake has more calories with 103 kcal per 100g, compared to Oat Milk with 47 kcal. That's a difference of 56 calories per 100g serving.
Is Protein Shake healthier than Oat Milk?
Based on our nutritional analysis, Protein Shake is generally the healthier choice, winning in 3 out of 5 key nutritional categories. Protein Shake has 103 calories, 20g protein, and 1g fiber per 100g. However, the best choice depends on your specific dietary goals.
What is the protein difference between Protein Shake and Oat Milk?
Protein Shake has more protein with 20g per 100g, compared to Oat Milk with 1g. Protein Shake provides 19.0g more protein per 100g serving.
Which is better for weight loss, Protein Shake or Oat Milk?
For weight loss, Oat Milk is the better choice with only 47 calories per 100g compared to 103 calories in Protein Shake. Protein Shake also offers 1g of fiber per 100g, which helps you feel fuller longer.
Does Protein Shake or Oat Milk have fewer carbs?
Protein Shake has fewer carbs with 3.5g per 100g, compared to Oat Milk with 7.8g. If you're following a low-carb diet, Protein Shake is the better option with 4.3g fewer carbohydrates.
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About Our Data
All nutrition data in this comparison is sourced from the USDA FoodData Central, the official food composition database maintained by the U.S. Department of Agriculture. Values are based on 100g servings for accurate comparison.
Health Disclaimer: This comparison is for informational purposes only and is not intended as medical or dietary advice. Nutritional needs vary by individual. The best food choice depends on your personal health goals, dietary requirements, and preferences. Consult a healthcare provider or registered dietitian for personalized nutrition guidance.