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How Many Calories in Cereals Ready-to-eat, Kellogg, Kellogg'S Special K?

✓ Nutrition data reviewed against USDA FoodData Central and Public Health England guidance by Jordan Morley, Editorial Reviewer. Last reviewed: 27 October 2026.

Fact-checked against original USDA source data by Jordan Morley, Editorial Reviewer. Not a registered dietitian — nutrition figures are sourced directly from USDA FoodData Central, not independently assessed medical advice.

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377

calories per 100g

117 calories per 1 cup (31g)

MORiSH high-protein snacks — try alongside

17.8gProtein

73.4gCarbs

1.8gFat

1.4gFibre

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⚖ Kitchen Scales

Quick reference — common serving sizes

Amount	Calories	Protein
1 oz (28g)	107 kcal	5.0g
100g	377 kcal	17.8g

Calculate for your own serving size

grams

377kcal

17.8gprotein

73.4gcarbs

1.8gfat

1.4gfibre

A cereals ready-to-eat, kellogg, kellogg's special k contains 377 calories per 100g. A typical 1 cup (31g) provides about 117 calories. Cereals Ready-to-eat, Kellogg, Kellogg'S Special K is high in calories and is a good source of protein. Accurate tracking starts with weighing portions — a digital kitchen scale removes all the guesswork.

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K Nutrition Facts

Nutrient	Per 100g	Per serving (31g)
Calories	377 kcal	117 kcal
Protein	17.8g	5.5g
Carbohydrates	73.4g	22.8g
of which Sugars	12.7g	3.9g
Fat	1.8g	0.6g
of which Saturates	0.4g	0.1g
Fibre	1.4g	0.4g
Sodium	667.0mg	207mg
Potassium	53.0mg	16mg
Calcium	23.0mg	7mg
Iron	28.0mg	8.7mg
Vitamin C	68.0mg	21.1mg
Vitamin A	500.0µg	155µg
Selenium	54.9µg	17µg
Riboflavin (B2)	1.9mg	0.6mg

% of Daily Value (per 100g)

Based on a standard 2,000-calorie reference diet — the same basis used on nutrition labels in the US and UK.

High in protein (36% DV) — an excellent source
High in carbohydrates (27% DV) — an excellent source
Low in saturated fat (2% DV)
High in iron (156% DV) — an excellent source
High in vitamin C (76% DV) — an excellent source
High in vitamin A (56% DV) — an excellent source
High in selenium (100% DV) — an excellent source
High in riboflavin (B2) (146% DV) — an excellent source

High in sodium (29% DV) — worth weighing against your daily intake if you're watching this specifically

Calories: 19% DV
Protein: 36% DV
Carbohydrates: 27% DV
Fibre: 5% DV
Fat: 2% DV
Saturated fat: 2% DV
Sodium: 29% DV
Potassium: 1% DV
Calcium: 2% DV
Iron: 156% DV
Vitamin C: 76% DV
Vitamin A: 56% DV
Selenium: 100% DV
Riboflavin (B2): 146% DV

High-protein options alongside cereals ready-to-eat, kellogg, kellogg's special k

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MORiSH

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Have a cat or dog? Check whether cereals ready-to-eat, kellogg, kellogg's special k is safe for your dog or safe for your cat before sharing. Also check the full ingredient breakdown and food safety guide for pregnancy and storage advice. If calorie tracking is part of a broader health check, hormone testing can rule out metabolic factors affecting your results. Tracking supplements too? Check drug and supplement interactions before combining anything new.

Good to know

Check the actual serving size on packaging before comparing to the per-100g figures here — snack portions are often smaller (or larger) than 100g.

Does cereals ready-to-eat, kellogg, kellogg's special k fit your diet?

High-protein diets

At 17.8g of protein per 100g, cereals ready-to-eat, kellogg, kellogg's special k clears the 15g/100g threshold generally used to call a food high-protein — a useful contributor if you're tracking protein intake for muscle maintenance, satiety, or a higher-protein eating pattern.

Frequently Asked Questions

How many calories in cereals ready-to-eat, kellogg, kellogg's special k per 100g?

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K contains 377 calories per 100g, based on USDA reference data.

Is cereals ready-to-eat, kellogg, kellogg's special k high in calories?

A 1 cup of cereals ready-to-eat, kellogg, kellogg's special k (31g) has around 117 calories — roughly 6% of a 2,000-calorie daily intake.

Is cereals ready-to-eat, kellogg, kellogg's special k good for weight loss?

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K is fairly calorie-dense at 377 calories per 100g, so portion size matters when losing weight. A 1 cup provides about 117 calories.

How much protein is in cereals ready-to-eat, kellogg, kellogg's special k?

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K contains 17.8g of protein per 100g.

Is cereals ready-to-eat, kellogg, kellogg's special k a good source of fibre?

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K is relatively low in fibre at 1.4g per 100g, so pairing it with fibre-rich sides (vegetables, whole grains, legumes) can help balance a meal.

How does cereals ready-to-eat, kellogg, kellogg's special k compare to soup, chicken noodle, dry, mix?

Cereals Ready-to-eat, Kellogg, Kellogg'S Special K has 377 calories per 100g, close to soup, chicken noodle, dry, mix at 377 — 0 calories fewer per 100g. See the full macro breakdown above.

How many servings of cereals ready-to-eat, kellogg, kellogg's special k for 20g of protein?

With 17.8g of protein per 100g, you'd need roughly 112g of cereals ready-to-eat, kellogg, kellogg's special k to reach 20g of protein

Foods with a similar calorie count

Other snacks closest to cereals ready-to-eat, kellogg, kellogg's special k by calories per 100g:

Food	Calories	Protein	Carbs	Fat
Cereals Ready-to-eat, Kellogg, Kellogg'S Special K (this page)	377 kcal	17.8g	73.4g	1.8g
Soup, Chicken Noodle, Dry, Mix	377 kcal	15.4g	62.3g	6.5g
Kraft Foods, Shake 'N' Bake Original Recipe, Coating For Pork, Dry	377 kcal	6.1g	79.8g	3.7g
Puddings, Vanilla, Dry Mix, Instant	377 kcal	0.0g	92.9g	0.6g
Breakfast Bar, Corn Flake Crust with Fruit	377 kcal	4.4g	72.9g	7.5g
Cereals Ready-to-eat, General Mills, Cheerios	376 kcal	12.1g	73.2g	6.7g
Cereals Ready-to-eat, Post, Grape-Nuts Flakes	376 kcal	9.4g	82.0g	3.7g