Carbs in Kellogg's Frosted Flakes Cereal
How many carbs are in kellogg's frosted flakes cereal?
Kellogg's Frosted Flakes Cereal has 81.1g net carbs per 100g — 83.8g total carbs minus 2.7g fiber — plus 2.7g protein, 0g fat, and 351 calories. 1 cup (37g) works out to about 30g net carbs and 130 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 per 100 g, sourced from Manufacturer-reported values; net carbs are computed by CarbMeNot.
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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.
Last updated June 10, 2026 · Reviewed by Jordan Lee, Nutrition Editor
Values per 100 g.
Is kellogg's frosted flakes cereal keto-friendly?
Kellogg's Frosted Flakes Cereal is generally not keto-friendly. It has 81.1g net carbs per 100g (83.8g total carbs − 2.7g fiber). A typical serving — 1 cup (37g) — is about 30g 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.
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 has 351 calories per 100g. 1 cup (37g) has about 130 calories. That's alongside 2.7g protein, 0g fat, and 81.1g net carbs per 100g.
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 has 83.8g of total carbs and 81.1g of net carbs per 100 grams.
- How many net carbs are in kellogg's frosted flakes cereal?
- Kellogg's Frosted Flakes Cereal has 81.1g of net carbs per 100 grams (total carbs 83.8g minus 2.7g fiber).
- Is kellogg's frosted flakes cereal keto-friendly?
- Kellogg's Frosted Flakes Cereal is generally not keto-friendly. It has 81.1g net carbs per 100g (83.8g total carbs − 2.7g fiber). A typical serving — 1 cup (37g) — is about 30g 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 has 351 calories per 100 grams.
- How many carbs are in 1 cup (37g) of kellogg's frosted flakes cereal?
- 1 cup (37g) of kellogg's frosted flakes cereal (37g) has about 30g net carbs, 31g total carbs, and 130 calories.
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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.