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🥛 Calories in Whey Protein
The most studied sports supplement — fast-absorbing protein for muscle growth
Per 100g
400kcal
80g
Protein
6g
Carbs
7g
Fat
Calculate Your Serving
Full Nutrition Facts — Per 100g
| Nutrient | Per 100g | Per 1 scoop whey protein (30g) |
|---|---|---|
| Calories | 400kcal | 120kcal |
| Protein | 80g | 24g |
| Total Carbs | 6g | 1.8g |
| — of which Sugar | 3g | 0.9g |
| Total Fat | 7g | 2.1g |
| Dietary Fibre | 0g | 0g |
| Sodium | 200mg | 60mg |
Macro Breakdown
Protein80g (320 kcal)
Carbohydrates6g (24 kcal)
Fat7g (63 kcal)
All values per 100g. Protein & carbs = 4 kcal/g · Fat = 9 kcal/g
Key Vitamins & Minerals
Calcium600mg
60% of daily reference intake
✅ Key Nutrition Facts
- •80g protein per 100g — most protein-dense common food
- •Complete protein — highest leucine content of any protein source
- •Fast-absorbing — peaks in blood within 60–90 minutes
- •Backed by decades of research on muscle growth and recovery
Calories by Serving Size
| Serving | Grams | Calories | Protein |
|---|---|---|---|
| 1 scoop (30g) | 30g | 120 kcal | 24g |
| 100g | 100g | 400 kcal | 80g |
| 1.5 scoops (45g) | 45g | 180 kcal | 36g |
Frequently Asked Questions
How many calories are in a scoop of whey protein?+
A standard 30g scoop of whey protein concentrate typically contains 110–130 calories, 22–25g of protein, 2–5g of carbs, and 1–3g of fat. Values vary by brand; whey isolate is typically slightly higher in protein and lower in carbs and fat.
Is whey protein good for weight loss?+
Yes. Multiple studies show whey protein supports fat loss by promoting satiety, preserving muscle mass during a calorie deficit, and having a high thermic effect. Replacing higher-calorie snacks with a whey protein shake is an effective way to increase protein while managing calories.
When should I take whey protein?+
The most evidence-backed timing is within 30–60 minutes after a workout, when muscle protein synthesis is elevated. However, the 'anabolic window' research has evolved — total daily protein intake matters more than precise timing for most people.
Whey concentrate vs whey isolate — what is the difference?+
Whey concentrate is 70–80% protein with more lactose and fat. Whey isolate is 90%+ protein with minimal lactose and fat, making it better for lactose-sensitive individuals or those on strict diets. Isolate is slightly more expensive per gram of protein.
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Data source: USDA FoodData Central & peer-reviewed nutritional references. Values are averages — actual nutrient content varies by brand, preparation method, and growing conditions. Not medical advice.