Guide

Pure protein yields about 400 calories per 100 grams, but foods with “100 g protein” can land higher once fat and carbs come along.

One hundred grams of pure protein supplies about 400 calories, yet most foods bring extra calories from fat, carbs, and even labeling rounding.

Pure protein supplies 4 calories per gram, so 100 grams of protein equals 400 calories before cooking water and add-ins.

120 grams of protein equals 480 calories from protein, and your total calories rise or fall based on the fat and carbs that come with that protein.

Twelve raw oysters usually land near 90–120 calories and 10–14 g protein, with the swing driven by oyster size, species, and how much liquor you slurp.

A 120-gram protein target adds about 480 calories from protein alone, then your carbs and fats fill in the rest.

One hundred twenty grams of pure protein contains about 480 calories, and real foods add extra calories from fat and carbs.

140 grams of protein contains 560 calories, since protein provides 4 calories per gram before the rest of the food is counted.

One hundred thirty grams of pure protein equals 520 label calories (4 per gram).

One hundred forty grams of protein adds 560 calories, since dietary protein is counted as 4 calories per gram on food labels.