Calories in
cereals ready-to-eat, post, grape-nuts cereal
361 kcal per 100 g Cereals ready-to-eat, POST, GRAPE-NUTS Cereal contains 361 calories per 100 grams, or about 209 calories per 0.5 cup. Per 100 g it provides 11.2 g protein, 80.5 g carbohydrate and 1.8 g fat.
By calories that splits 84% carbohydrate, 12% protein, 4% fat.
Calories in a typical serving
Per-100 g figures are useful for comparison but nobody eats 100 g of anything on purpose. These are the USDA's own household measures.
| Serving | Grams | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 0.5 cup | 58.0 g | 209 | 6.5 g | 46.7 g | 1.0 g |
Full nutrition, per 100 g and per 0.5 cup
| Nutrient | Per 100 g | Per 0.5 cup |
|---|---|---|
| Energy | 361 kcal | 209 kcal |
| Protein | 11.2 g | 6.5 g |
| Total fat | 1.8 g | 1.0 g |
| Saturated fat | 0.3 g | 0.2 g |
| Carbohydrate | 80.5 g | 46.7 g |
| Fibre | 13.0 g | 7.5 g |
| Sugars | 8.9 g | 5.1 g |
| Sodium | 465.0 mg | 269.7 mg |
| Potassium | 400.0 mg | 232.0 mg |
| Calcium | 32.0 mg | 18.6 mg |
| Iron | 28.0 mg | 16.2 mg |
| Vitamin C | 0.1 mg | 0.1 mg |
| Vitamin A | 0.0 µg | 0.0 µg |
| Cholesterol | 0.0 mg | 0.0 mg |
| Water | 3.5 g | 2.0 g |
USDA FoodData Central, SR Legacy (FDC ID 171647). A dash means the nutrient was not measured for this item, which is not the same as zero.
How cereals ready-to-eat, post, grape-nuts cereal compares
Among the 48 breakfast cereals items on this site, cereals ready-to-eat, post, grape-nuts cereal ranks 39 of 48 by calorie density, against a category average of 376 kcal per 100 g — so it is about 4% less calorie-dense than typical for its group.
It carries 3.1 g of protein per 100 calories, so it is not a meaningful protein source.
To burn off 0.5 cup (209 kcal), a 70 kg adult would walk for roughly 43 minutes — see the walking calculation on our sister site, or pick a different activity. Treat that as a sense of scale rather than a rule: eating and moving are not a simple ledger.
Questions
How many calories are in cereals ready-to-eat, post, grape-nuts cereal?
Cereals ready-to-eat, POST, GRAPE-NUTS Cereal contains 361 calories per 100 g, which works out to about 209 calories per 0.5 cup. It also provides 11.2 g of protein, 80.5 g of carbohydrate and 1.8 g of fat per 100 g.
What is the macro breakdown of cereals ready-to-eat, post, grape-nuts cereal?
By calories, cereals ready-to-eat, post, grape-nuts cereal is roughly 84% carbohydrate, 12% protein and 4% fat. That makes it a predominantly carbohydrate-based food.
How long does it take to burn off 0.5 cup?
About 43 minutes of ordinary walking for a 70 kg adult (MET 4.0). That is a rough guide for scale, not a prescription — appetite and activity interact in ways a simple subtraction does not capture.
Is this figure exact for the cereals ready-to-eat, post, grape-nuts cereal I bought?
No. These are USDA reference values, averaged across samples. Real foods vary with variety, ripeness, growing conditions, cut, brand and how they were cooked — 10–20% either way is normal. Use them for planning, not precision.
Similar foods
Closest in calorie density within breakfast cereals.
Source: USDA FoodData Central, SR Legacy — public domain. Full USDA description: "Cereals ready-to-eat, POST, GRAPE-NUTS Cereal". General information only — not medical or nutrition advice. Values are averages for a food type and vary by brand, ripeness and preparation.