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Calorie comparison

Oat Milk vs Soy Milk

Per 100 grams, soy milk is the lighter choice by 7 calories, while soy milk delivers more protein. The right pick depends on your goal — fewer calories for a cut, more protein to stay full.

Per 100 grams

Per 100 gOat MilkSoy Milk
Calories5043
Protein1 g3.3 g
Carbs8 g4 g
Fat1.5 g1.8 g

Orange highlights the "better for a calorie deficit" value (fewer calories, fat and carbs; more protein). Your goals decide what "better" means.

Per typical serving

🥛 Oat Milk

1 cup (240 g)

120 cal

2.4 g protein · 19.2 g carbs · 3.6 g fat

🥛 Soy Milk

1 cup (243 g)

104 cal

8 g protein · 9.7 g carbs · 4.4 g fat

Frequently asked

  • Which has more calories, oat milk or soy milk?

    Per 100 g, oat milk has 50 calories and soy milk has 43. Soy Milk is lower in calories.

  • Which has more protein, oat milk or soy milk?

    Oat Milk has 1 g of protein per 100 g; soy milk has 3.3 g. Soy Milk wins on protein.

  • Is oat milk or soy milk better for weight loss?

    For a calorie deficit, the lower-calorie, higher-protein option usually helps you stay full on fewer calories. Here that leans toward soy milk — but portion size matters more than which food you pick.

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