Protein powders vary from brand to brand depending on additional additives, so the exact number of calories can be hard to work out.

Hemp protein powder should be around 4 calories per gram, depending on the brand. So a 30 gram serve should be around 120 calories.

Pure egg protein contains just 4 calories per gram. So in a 30 gram serve you should be getting around 120 calories.

Pure protein from rice protein powder contains 4 calories per gram as with all other protein.

Raw soy protein powder contains around 4 calories per gram of protein. The calories can rise in soy powders depending on the purity and any additives.

Casein protein from casein protein powder provides around 4 calories for each gram.

All protein provides around 4 calories per gram. So a 30 gram serve of beef protein powder should include around 120 calories.

Pea protein powder in pure form has roughly the same number of calories as all protein, which is 4 calories per gram.

The protein from whey protein powder contains 4 calories for each gram, so an average 30 gram serve should contain around 120 calories.