Post Grape-Nuts Cereal Calories & Carbs
Last updated September 8, 2026 · Compiled by the CarbMeNot Team
Values per 1/2 cup (58g), 58g; per 100 g: 68.9g net carbs, 345 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 post grape-nuts cereal?
Post Grape-Nuts Cereal — 1/2 cup (58g), 58g — has 40g net carbs: 47g total carbs minus 7g fiber, plus 7g protein, 1g fat, and 200 calories. Per 100g that is 68.9g net carbs (81g total carbs, 12.1g fiber) and 345 calories. That makes post grape-nuts 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, post grape-nuts 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 post grape-nuts cereal keto-friendly?
Post Grape-Nuts Cereal is generally not keto-friendly. 1/2 cup (58g), 58g is 40g net carbs (47g total carbs − 7g fiber); per 100g that is 68.9g 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 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.
Carbs by serving size
| Serving | Net carbs | Total carbs | Protein | Calories |
|---|---|---|---|---|
| 1/2 cup (58g) | 40g | 47g | 7g | 200 |
| 100 g (3.5 oz) | 68.9g | 81g | 12.1g | 345 |
| 1 oz (28 g) | 19.3g | 22.7g | 3.4g | 97 |
How many calories are in post grape-nuts cereal?
Post Grape-Nuts Cereal — 1/2 cup (58g), 58g — has 200 calories, with 7g protein, 1g fat, and 40g net carbs. Per 100g: 345 calories and 68.9g net carbs.
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 | 12.1g |
| Fat | 1.7g |
| Sodium | 500mg |
| Potassium | 328mg |
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 (1/2 cup (58g), 58g) has 47g of total carbs and 40g of net carbs. Per 100 grams: 81g total, 68.9g net.
- How many net carbs are in post grape-nuts cereal?
- Post Grape-Nuts Cereal has 40g of net carbs per 1/2 cup (58g), 58g — 47g total carbs minus 7g fiber.
- Is post grape-nuts cereal keto-friendly?
- Post Grape-Nuts Cereal is generally not keto-friendly. 1/2 cup (58g), 58g is 40g net carbs (47g total carbs − 7g fiber); per 100g that is 68.9g 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 (1/2 cup (58g), 58g) has 200 calories; that is 345 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.