Calories in Post Frosted Flakes

Instrument — Food Profile
100g
Calories

387.00

kcal
Protein

3.23

g
Carbs

90.30

g
Fat

0.00

g
Fiber

0.00

g
Sugar

38.70

g

Curious about the nutritional profile of post frosted flakes? Whether you are tracking your macros or just want to know how many calories they contain, you are in the right place. A standard 100g serving of post frosted flakes provides 387.00 calories, 3.23g of protein, and 90.30g of carbs.

Serving Size Variations

Portion Size Calories Protein Carbs Fat
100g (Standard) 387.00 kcal 3.23g 90.30g 0.00g
1 oz (28g) 108 kcal 0.9g 25.3g 0.0g
3/4 cup (31g) 120 kcal 1.0g 28.0g 0.0g

Vitamins & Minerals

Nutrient Amount
Vitamin A 290.00 mcg
Vitamin C 19.40 mg
Vitamin D 5.00 mcg
Thiamin (B1) 1.00 mg
Riboflavin (B2) 1.37 mg
Niacin (B3) 16.10 mg
Vitamin B6 1.61 mg
Folate (B9) 323.00 mcg
Vitamin B12 4.84 mcg
Iron 11.60 mg
Potassium 81.00 mg
Sodium 452.00 mg
📊 Data Source: USDA FoodData Central Database (FDC ID: 2621922)
🩺 Reviewed by Ashwini Yadav Last Updated: July 2026

Nutrition FAQs

How many calories are in post frosted flakes?

100 grams of post frosted flakes contains exactly 387.00 calories.

How many calories are in 1 3/4 cup of post frosted flakes?

A single 3/4 cup (31g) of post frosted flakes provides 120 calories.

Can I eat post frosted flakes on a keto diet?

No, post frosted flakes have 90.30g of carbs per 100g, which may disrupt ketosis.

Is post frosted flakes a good source of protein?

They contain 3.23g of protein per 100g, which is moderate.