How many calories in yogurt? Every type, pot size, and the low-fat trap
Calories in plain, low-fat, nonfat, flavored, and plant-based yogurt per 100g and per pot, why low-fat is not always lower in calories, and how to read the tub you actually bought.
Yogurt is the most misread product in the dairy aisle. Two tubs sitting next to each other, both white, both plain-looking, can differ by 80 calories per 100g. The word on the front tells you almost nothing about the number on the back.
Here is what yogurt actually costs, by type, by fat percent, and by the pot size you are genuinely holding.
The quick answer
Plain whole milk yogurt is about 61 kcal per 100g. Plain low-fat is around 63 kcal, and plain nonfat is about 56 kcal, per USDA FoodData Central reference entries for plain yogurt.
Read those three numbers again. They are almost identical.
| Type (per 100g) | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Plain yogurt, whole milk | 61 | 3.5g | 4.7g | 3.3g |
| Plain yogurt, low fat | 63 | 5.3g | 7.0g | 1.6g |
| Plain yogurt, nonfat | 56 | 5.7g | 7.7g | 0.2g |
| Flavored yogurt, vanilla low fat | 85 | 4.9g | 14g | 1.3g |
| Flavored yogurt, fruit on the bottom | 99 | 3.9g | 18g | 1.5g |
| Drinkable yogurt, plain | 60 | 3.2g | 7.0g | 2.0g |
| Kefir, plain low fat | 45 | 3.3g | 4.7g | 1.0g |
| Plain Greek yogurt, nonfat | 59 | 10g | 3.6g | 0.4g |
| Plain skyr, nonfat | 63 | 11g | 4.0g | 0.2g |
The low-fat trap
Low-fat plain yogurt contains more calories per 100g than whole milk plain yogurt in USDA reference data. 63 against 61. This is not a typo, and it is the most useful thing on this page.
Fat carries the body and mouthfeel of yogurt. Strip it out and you get something thin and sour that nobody buys twice. So manufacturers replace the missing volume with nonfat milk solids, which are concentrated lactose and milk protein. The protein goes up, which is genuinely good. The lactose goes up too, and lactose is a sugar with calories.
The result: you remove 1.7g of fat (about 15 kcal) and add back roughly 2.3g of carbohydrate (about 9 kcal) plus extra protein solids. The arithmetic lands you almost exactly where you started.
What this means practically. Choosing low-fat over whole milk plain yogurt is not a calorie decision. It is a texture and satiety decision. Whole milk yogurt is more filling per calorie for most people. If you like it better, the tracking cost of choosing it is about 2 kcal per 100g, which is noise.
Nonfat is the only version with a real calorie saving, and even that is only 5 kcal per 100g against whole milk. Over a 170g pot that is 9 kcal. It is not the lever people think it is.
The lever is plain versus flavored.
Plain vs flavored: where the calories actually live
| Style (150g pot) | Calories | Sugar |
|---|---|---|
| Plain nonfat | 84 | 7g (all lactose) |
| Plain whole milk | 92 | 7g (all lactose) |
| Vanilla, low fat | 128 | 18g |
| Fruit on the bottom | 149 | 24g |
| Dessert-style (chocolate, toffee) | 180-220 | 26-32g |
A fruit pot is not yogurt plus fruit. It is yogurt plus fruit puree plus sugar, and the puree is usually the third ingredient behind milk and sugar. The fruit contributes flavor and colour. The sugar contributes the calories.
The swap that costs nothing: plain yogurt with 80g of actual fresh berries is about 120 kcal with 5g of natural sugar, against 149 kcal and 24g of sugar for the fruit pot. You get more food, more fibre, and less than a third of the sugar.
For the wider picture on how added sugar is labelled, hidden sugar names on food labels covers the 56 aliases that show up on these pots.
By pot size, because the pot is the real serving
Nobody eats 100g. People eat a pot, and pot sizes are not standardised across markets.
| Serving | Grams | Plain nonfat | Plain whole | Flavored |
|---|---|---|---|---|
| 1 tablespoon | 15g | 8 | 9 | 15 |
| Small pot (EU) | 125g | 70 | 76 | 124 |
| Standard pot (UK/EU) | 150g | 84 | 92 | 149 |
| US single serve | 170g | 95 | 104 | 168 |
| Large single serve | 200g | 112 | 122 | 198 |
| 1 US cup | 245g | 137 | 149 | 243 |
| Small tub | 500g | 280 | 305 | 495 |
The number that trips people up is the tub. A 500g tub of plain yogurt is 280 to 305 kcal. Eaten across a week that is trivial. Eaten in two sittings, which is common with the large tubs, it is a meal's worth of calories that most people log as a snack.
If you are eyeballing rather than weighing, portion sizes without a scale has the hand-based estimates that work for soft foods like this.
Regular vs Greek: the protein question
This is the comparison that decides whether yogurt is a snack or a meal component.
| Per 170g pot | Calories | Protein | Protein per 100 kcal |
|---|---|---|---|
| Plain nonfat yogurt | 95 | 9.7g | 10g |
| Plain nonfat Greek yogurt | 100 | 17g | 17g |
Same calories. Nearly double the protein. The straining that makes Greek yogurt thick removes whey, water, and lactose, which concentrates what remains.
For a snack where you mainly want something cold and mild, regular yogurt is fine and usually cheaper. For breakfast, or anywhere you are relying on the protein to keep you full until the next meal, Greek is the better buy at the same calorie cost. The full breakdown by fat percent lives in Greek yogurt calories, and the Icelandic version is covered in skyr calories and protein.
How much protein you should be aiming for daily is covered in how much protein you actually need.
Drinkable yogurt, kefir, and ayran
Liquid versions behave differently because portion control disappears. You do not eat 400ml of yogurt with a spoon. You will drink it.
Drinkable yogurt is about 60 kcal per 100ml plain, but the sweetened versions that dominate the shelf run 80 to 95 kcal per 100ml. A 250ml bottle is therefore 200 to 240 kcal, which is a meal-sized number for something that reads as a drink.
Kefir is lighter at roughly 45 kcal per 100ml for the low-fat plain version, because the fermentation consumes more of the lactose. Plain kefir is one of the cheapest ways to get a fermented dairy serving into the day.
Ayran and lassi diverge sharply. Salted ayran is diluted yogurt at about 35 to 40 kcal per 100ml. Sweet mango lassi is 90 to 120 kcal per 100ml, because it is yogurt, sugar, and fruit puree blended together.
Plant-based yogurts
The category name is the only thing these share with dairy yogurt. The macros are entirely different, and the protein is usually the casualty.
| Type (per 100g) | Calories | Protein |
|---|---|---|
| Soy yogurt, plain | 50-60 | 3.5-4g |
| Oat yogurt, plain | 55-70 | 1-2g |
| Almond yogurt, plain | 50-60 | 1-2g |
| Coconut yogurt, plain | 100-140 | 0.5-1g |
Soy is the only plant yogurt that matches dairy on protein. Everything else is in the 1 to 2g range per 100g, which is a rounding error. Coconut yogurt is the outlier on calories: it can be more than double plain dairy yogurt because it is largely coconut fat.
None of that makes them bad choices. It makes them different foods that happen to share a shelf. If you switched to almond yogurt for the calories and are wondering why breakfast stopped holding you, the missing 8g of protein is the answer.
What to actually check on the tub
Four things, in order:
- The pot weight. Everything else is meaningless without it. 125g and 200g pots sit side by side and look identical on a shelf.
- Sugar per 100g. Plain yogurt is 4 to 7g, all of it lactose. Anything above 10g has added sugar regardless of what the front says.
- Protein per 100g. Regular yogurt is 3.5 to 5.7g. Greek is 8g or higher. If a tub says "Greek style" and shows 5g, it is thickened regular yogurt.
- The ingredient order. Milk should be first. If sugar is second, you are holding a dessert.
Marketing terms that tell you nothing about calories: probiotic, live cultures, natural, artisan, farmhouse, authentic, creamy.
The verdict
Plain yogurt is roughly 60 kcal per 100g and the fat percent barely moves it. Flavored yogurt is roughly 100 kcal per 100g and the difference is sugar, not milk.
If you want the lightest option, plain nonfat at 56 kcal per 100g. If you want the most useful option, plain nonfat Greek at 59 kcal and 10g of protein. If you want the one that will quietly cost you a few hundred calories a week without ever feeling like a decision, the fruit pot does that job reliably.
Buy plain. Add the fruit yourself. That single swap is worth more than every low-fat label in the aisle.