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Head to head

Cereals ready-to-eat, WEETABIX whole grain cereal vs Cereals ready-to-eat, frosted oat cereal with marshmallows

Side by side, per 100 g, from the same USDA reference data.

Cereals ready-to-eat, frosted oat cereal with marshmallows has more — 400 calories per 100 g against 371 for cereals ready-to-eat, weetabix whole grain cereal, a difference of 29 kcal (8% more). On protein it is Cereals ready-to-eat, WEETABIX whole grain cereal 11.4 g versus cereals ready-to-eat, frosted oat cereal with marshmallows 7.1 g per 100 g.

SOURCE·USDA SR Legacy·REVIEWED JUL 2026

Nutrient by nutrient, per 100 g

Per 100 gCereals ready-to-eat, WEETABIX whole grain cerealCereals ready-to-eat, frosted oat cereal with marshmallowsDifference
Calories371 kcal400 kcal29 kcal
Protein 11.4 g 7.1 g 4.3 g
Total fat 2.9 g 3.3 g 0.5 g
Saturated fat 0.5 g 0.6 g 0.1 g
Carbohydrate 81.5 g 84.7 g 3.2 g
Fibre 11.4 g 4.3 g 7.1 g
Sugars 5.7 g 36.1 g 30.4 g
Sodium 371.0 mg 533.0 mg 162.0 mg
Potassium 429.0 mg 207.0 mg 222.0 mg
Calcium 57.0 mg 333.0 mg 276.0 mg
Iron 12.9 mg 15.0 mg 2.1 mg
Vitamin C 0.0 mg 20.0 mg 20.0 mg
Vitamin A 0.0 µg 500.0 µg 500.0 µg
Cholesterol 0.0 mg 0.0 mg equal
Water 3.0 g 2.8 g 0.2 g

Highlighted cells are the higher of the two. "Higher" is not automatically "better" — it depends entirely on what you are trying to do.

SOURCE·USDA SR Legacy·REVIEWED JUL 2026

How this is worked out

  1. Both columns are the same USDA release, per 100 g of edible portion — the only basis on which two different foods can honestly be set side by side.
  2. The difference column is the two published figures subtracted, not a scaled or normalised score.
  3. The percentage in the answer is the higher figure over the lower, minus one — a ratio, so it does not change with serving size.
difference = |A − B|                (per 100 g)
"% more"   = (higher ÷ lower − 1) × 100

Full data & method →

The question this page settles

Which has more calories, cereals ready-to-eat, weetabix whole grain cereal or cereals ready-to-eat, frosted oat cereal with marshmallows?

Cereals ready-to-eat, frosted oat cereal with marshmallows has more — 400 calories per 100 g against 371 for cereals ready-to-eat, weetabix whole grain cereal, a difference of 29 kcal (8% more). On protein it is Cereals ready-to-eat, WEETABIX whole grain cereal 11.4 g versus cereals ready-to-eat, frosted oat cereal with marshmallows 7.1 g per 100 g.

Source: USDA FoodData Central, SR Legacy, reviewed JUL 2026. General information only — not medical or nutrition advice. Values are averages for a food type and vary by brand, ripeness and preparation.

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Published by

Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.