Yogurt has long been one of the easiest “default” foods in the kitchen — eaten for breakfast, blended into smoothies, used as a base for sauces. But the word “yogurt” on a grocery shelf hides a surprisingly wide range of calorie counts, fat levels, and ingredients, and the gap between types is bigger than most people expect.

Plain whole-milk yogurt

Classic plain yogurt made from whole milk is the natural starting point for comparison. A typical 100 g (about 3.5 oz) serving runs roughly 60-70 calories, depending on the milk’s fat content and the brand. It has protein, milk fat, and the natural sugars from lactose, with no added sugar if you’re looking at the unsweetened kind.

Greek yogurt

Greek yogurt is strained to remove much of the whey, which makes it thicker and packs noticeably more protein per serving than regular yogurt. That same straining process also nudges the calorie count up a bit: a 100 g serving of regular full-fat Greek yogurt usually lands around 90-100 calories, while a nonfat version comes in closer to 55-60. That high protein content is a big part of why Greek yogurt has become so popular with anyone focused on post-workout nutrition.

Low-fat and nonfat yogurt

Low-fat or nonfat yogurt is the lowest-calorie option among the “real” yogurts, typically around 40-50 calories per 100 g. One thing worth watching for: when manufacturers strip out the fat, they often add sugar or thickeners to make up for the lost texture and flavor, so it pays to check the ingredient label rather than assume “low-fat” automatically means low-calorie.

Drinkable yogurt

Drinkable yogurt has a very different consistency from the cup kind, and it’s often more calorie-dense than people expect, especially when sweetened or fruit-flavored. A 100 ml (about 3.4 oz) serving can run 60-80 calories or more, and a 250-300 ml bottle adds up to noticeably more calories than a standard yogurt cup.

Flavored and sweetened yogurts

Fruit-on-the-bottom, honey, granola, or chocolate-chip yogurts are their own category calorie-wise. Added sugar can easily tack on 50-100 calories beyond the yogurt’s base count, and serving sizes here often run larger than a standard 100 g cup. If keeping calories in check is the goal, it usually makes more sense to buy plain yogurt and stir in fresh fruit or a bit of honey yourself, so you control the amount.

Plant-based yogurt alternatives

Soy-, coconut-, oat-, and almond-based yogurts have become an increasingly common alternative to dairy. Their calorie counts vary a lot depending on the base: soy versions come closest to dairy yogurt in both calories and protein, coconut versions tend to run higher in calories due to their fat content, and oat and almond versions are usually lower in calories but noticeably lower in protein too.

Choosing the right yogurt for your goals

If keeping calories down is the priority, low-fat or plain unsweetened yogurt is usually the better pick. If fullness and muscle support matter more, Greek yogurt’s high protein content tends to make it the smarter choice, even with its slightly higher calorie count. Either way, the most reliable guide is the label on the actual product in front of you — brands vary quite a bit, and checking the specific numbers beats relying on general averages.