Kellogg's Frosted Flakes Cereal Calories & Carbs
Last updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1 cup (37g), 37g; per 100 g: 81.1g net carbs, 351 cal. Net carbs = total carbs − fiber − sugar alcohols — do the math for any label with the free net carbs calculator.
How many carbs are in kellogg's frosted flakes cereal?
Kellogg's Frosted Flakes Cereal — 1 cup (37g), 37g — has 30g net carbs: 31g total carbs minus 1g fiber, plus 1g protein, 0g fat, and 130 calories. Per 100g that is 81.1g net carbs (83.8g total carbs, 2.7g fiber) and 351 calories. That makes kellogg's frosted flakes cereal high in net carbs and higher than the typical breads and grain, which averages about 44.7g net carbs per 100g. At this carb count, kellogg's frosted flakes cereal is best limited to small portions on keto (usually 20–50g net carbs per day). Values are per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
Is kellogg's frosted flakes cereal keto-friendly?
Kellogg's Frosted Flakes Cereal is generally not keto-friendly. 1 cup (37g), 37g is 30g net carbs (31g total carbs − 1g fiber); per 100g that is 81.1g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
Keeping an eye on carbs in kellogg's frosted flakes cereal?
Kellogg's Frosted Flakes Cereal runs higher in carbs, so portions matter. CarbMeNot tracks every gram from a photo, so you stay under your daily limit without the math.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1 cup (37g) | 30g | 31g | 1g | 130 |
| 100 g (3.5 oz) | 81.1g | 83.8g | 2.7g | 351 |
| 1 oz (28 g) | 22.7g | 23.5g | 0.8g | 98 |
How many calories are in kellogg's frosted flakes cereal?
Kellogg's Frosted Flakes Cereal — 1 cup (37g), 37g — has 130 calories, with 1g protein, 0g fat, and 30g net carbs. Per 100g: 351 calories and 81.1g net carbs.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 351 |
| Total carbs | 83.8g |
| Net carbs | 81.1g |
| Fiber | 2.7g |
| Sugar | 32.4g |
| Sugar alcohols | 0g |
| Protein | 2.7g |
| Fat | 0g |
| Sodium | 514mg |
| Potassium | 81mg |
Source: Manufacturer-reported values (bread-grains). Net carbs = total carbs − fiber − sugar alcohols, computed by CarbMeNot.
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Frequently asked questions
- How many carbs are in kellogg's frosted flakes cereal?
- Kellogg's Frosted Flakes Cereal (1 cup (37g), 37g) has 31g of total carbs and 30g of net carbs. Per 100 grams: 83.8g total, 81.1g net.
- How many net carbs are in kellogg's frosted flakes cereal?
- Kellogg's Frosted Flakes Cereal has 30g of net carbs per 1 cup (37g), 37g — 31g total carbs minus 1g fiber.
- Is kellogg's frosted flakes cereal keto-friendly?
- Kellogg's Frosted Flakes Cereal is generally not keto-friendly. 1 cup (37g), 37g is 30g net carbs (31g total carbs − 1g fiber); per 100g that is 81.1g net carbs. On a standard keto diet (20–50g net carbs per day), even one serving uses a large share of your daily carbs, so keep portions small or save it for a higher-carb day.
- How many calories are in kellogg's frosted flakes cereal?
- Kellogg's Frosted Flakes Cereal (1 cup (37g), 37g) has 130 calories; that is 351 calories per 100 grams.
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CarbMeNot provides general nutrition information, not medical advice. Values are estimates — verify before relying on them for any health decision. See our Medical Disclaimer.