Whey protein powder calories — 100 g, serving sizes and calculator
Whey protein powder has about 400 kcal per 100 g. A common serving such as 1 scoop is about 120 kcal. Use the calculator below to estimate your own portion.
Whey protein powder portion calculator
Enter your portion and choose grams, ounces or a common serving. The result scales calories and macros from the per-100 g estimate.
Use packaged labels or your own recipe total when available. Restaurant and homemade portions can vary a lot.
Estimated total
| Estimated amount | — |
| Protein | — g |
| Carbs | — g |
| Fat | — g |
| Fiber | — g |
| Sugar | — g |
Rounded estimate for everyday tracking.
Whey protein powder calories by serving size
| Serving | Approx. amount | Approx. calories |
|---|---|---|
| Reference amount | 100 g | 400 kcal |
| 1 scoop | 30 g | 120 kcal |
| 2 scoops | 60 g | 240 kcal |
Values are rounded. The biggest source of error is usually portion size, added oil, sauces, sugar, toppings or brand differences.
Whey protein powder nutrition per 100 g
| Nutrient | Amount |
|---|---|
| Calories | 400 kcal |
| Protein | 80 g |
| Carbohydrates | 8 g |
| Fat | 6 g |
Can Whey protein powder fit a weight-loss diet?
Whey protein powder can be useful in a filling meal because it contributes protein. Balance it with vegetables, fruit, whole grains or other foods that fit your calorie target.
How to track Whey protein powder accurately
- Use the product label for packaged foods when available.
- For homemade dishes, calculate the full recipe and divide by the number of servings.
- Count extras such as oil, butter, ghee, cheese, mayonnaise, nuts and sugary sauces.
- Use the same bowl, spoon or plate when you want consistent estimates without weighing every meal.
How long to burn off 1 scoop?
For a serving of about 120 kcal, a 70 kg adult might burn a similar amount in roughly:
| Activity | Approx. time |
|---|---|
| Easy walking | 34 min |
| Brisk walking | 24 min |
| Running | 12 min |
| Cycling | 17 min |
Exercise burn varies with body weight, speed, incline, fitness level and intensity. Use this as a rough comparison, not a medical or training prescription.
Frequently asked questions
How many calories are in Whey protein powder?
Whey protein powder has about 400 kcal per 100 g. A common serving such as 1 scoop has about 120 kcal.
How many calories are in 100 g of Whey protein powder?
There are about 400 kcal in 100 g of Whey protein powder.
Is Whey protein powder good for weight loss?
It can fit a weight-loss plan if the portion fits your daily calorie target. Use the portion calculator on this page to scale the estimate to what you actually ate.
Why is my calorie count different?
Different brands, recipes, cooking methods, water content and serving sizes can change the final calories. For packaged food, prefer the nutrition label.
Data note
EKCal food pages combine standard food-composition references with practical serving estimates. Values are rounded and may differ by variety, brand and preparation. See Sources & Methodology.