Carbs in Post Grape-Nuts Cereal
How many carbs are in post grape-nuts cereal?
Post Grape-Nuts Cereal has 68.9g net carbs per 100g — 81g total carbs minus 12.1g fiber — plus 10.3g protein, 1.7g fat, and 345 calories. 1/2 cup (58g) works out to about 40g net carbs and 200 calories. That makes post grape-nuts cereal high in net carbs and higher than the typical breads and grain, which averages about 44.8g net carbs per 100g. At this carb count, post grape-nuts 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.
Keeping an eye on carbs in post grape-nuts cereal?
Post Grape-Nuts 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 post grape-nuts cereal keto-friendly?
Post Grape-Nuts Cereal is generally not keto-friendly. It has 68.9g net carbs per 100g (81g total carbs − 12.1g fiber). A typical serving — 1/2 cup (58g) — is about 40g 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 |
|---|---|---|---|---|
| 1/2 cup (58g) | 40g | 47g | 6g | 200 |
| 100 g (3.5 oz) | 68.9g | 81g | 10.3g | 345 |
| 1 oz (28 g) | 19.3g | 22.7g | 2.9g | 97 |
How many calories are in post grape-nuts cereal?
Post Grape-Nuts Cereal has 345 calories per 100g. 1/2 cup (58g) has about 200 calories. That's alongside 10.3g protein, 1.7g fat, and 68.9g net carbs per 100g.
Nutrition facts
| Nutrient | Amount (per 100 g) |
|---|---|
| Calories | 345 |
| Total carbs | 81g |
| Net carbs | 68.9g |
| Fiber | 12.1g |
| Sugar | 8.6g |
| Sugar alcohols | 0g |
| Protein | 10.3g |
| Fat | 1.7g |
| Sodium | 483mg |
| Potassium | 276mg |
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 post grape-nuts cereal?
- Post Grape-Nuts Cereal has 81g of total carbs and 68.9g of net carbs per 100 grams.
- How many net carbs are in post grape-nuts cereal?
- Post Grape-Nuts Cereal has 68.9g of net carbs per 100 grams (total carbs 81g minus 12.1g fiber).
- Is post grape-nuts cereal keto-friendly?
- Post Grape-Nuts Cereal is generally not keto-friendly. It has 68.9g net carbs per 100g (81g total carbs − 12.1g fiber). A typical serving — 1/2 cup (58g) — is about 40g 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 post grape-nuts cereal?
- Post Grape-Nuts Cereal has 345 calories per 100 grams.
- How many carbs are in 1/2 cup (58g) of post grape-nuts cereal?
- 1/2 cup (58g) of post grape-nuts cereal (58g) has about 40g net carbs, 47g total carbs, and 200 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.