What does 100 calories of granola bar look like?

100 calories =1 bar21 g · 0.7 oz
High calorie density4.71 kcal/g
Each 🍫 = one bar (~21.0 g). The last icon shows a part of one.
Food volume for 100 kcal

Granola bar has 471 calories per 100 g, so 100 calories is 1 bar of granola bar (21 g). That's a smaller portion than most snacks & sweets on this site (average 34 g per 100 kcal). Weigh or measure it at first: eyeballed portions of dense foods are where hidden calories come from.

Granola bar: 50 to 500 calories

CaloriesGramsOuncesBars
50 kcal11 g0.4 oz½
100 kcal21 g0.7 oz1
200 kcal42 g1.5 oz2
300 kcal64 g2.3 oz3
500 kcal106 g3.7 oz5

What's in 100 calories of granola bar

2.1 gprotein
13.7 gcarbs
4.2 gfat
1.1 gfiber

Protein 8% Carbs 54% Fat 37% of calories

Want more food for the same 100 calories?

These give you at least 2½ times more volume than granola bar:

Compare with other snacks & sweets

Food100 kcal isGrams
🍫 Granola bar1 bar21 g
🍭 Ice pop2½ ice pops127 g
🍅 Ketchup5¾ tablespoons99 g
🍮 Chocolate pudding¾ 3.5-oz cup70 g
🍧 Sorbet1 half cup69 g
🍖 BBQ sauce3½ tablespoons58 g
🍨 Vanilla ice cream¾ half-cup scoop48 g
🍨 Chocolate ice cream⅔ half-cup scoop46 g
🥧 Apple pie⅓ slice42 g
🍦 Ice cream sandwich⅔ sandwich42 g
🍁 Maple syrup2 tablespoons38 g
🍓 Jam1¾ tablespoons36 g
🍯 Honey1½ tablespoons33 g

See all snacks & sweets →

Questions

How much is 100 calories of granola bar?

100 calories of granola bar is about 21 g (0.7 oz), or roughly 1 bar.

How many calories are in 100 g of granola bar?

471 calories per 100 g, according to USDA FoodData Central.

Is granola bar good for weight loss?

High calorie density (4.71 kcal per gram). Small portions add up fast. Measuring matters most for foods like this. 100 calories also gives you 2.1 g of protein and 1.1 g of fiber.

How many calories are in one bar?

About 99 calories.

How many bars is 200 calories?

About 2 (42 g).

Free printable

The 100-calorie cheat sheet

One page with 300+ foods and their exact 100-calorie portions. Stick it on the fridge.

Source: USDA FoodData Central, "Snacks, granola bars, hard, plain" (FDC ID 167542). Grams for 100 kcal = 100 ÷ calories per gram. Unit weight: USDA: 1 bar = 21.0 g. Real portions vary by size, variety and preparation. Updated 2026-10-23.