Frosted Flakes Nutrition Facts: What the 37g Cup Actually Logs

Every gram of sugar in a serving of Frosted Flakes Original is added sugar. The retail panel lists 12 g total sugars and 12 g added sugars – the same number twice – which means none of the sweetness comes from the corn. That single line drives most of what follows in the Frosted Flakes nutrition facts, and it is the figure the box, the brand’s marketing page, and third-party scorers all keep returning to. This desk aggregates those declarations from the manufacturer’s SmartLabel entry, the WK Kellogg foodservice page, and public regulatory definitions, then structures them into the reference tables below.

The reader who already knows Frosted Flakes are sweet does not need that confirmed. What the panel settles is how sweet, against what daily ceiling, and what actually changes when you reach for the reduced-sugar box instead.

The Answer Block: One Dry Cup, By the Numbers

A serving of Frosted Flakes Original is 1 cup (37 g) and carries 130 calories. It logs 12 g total sugars, all of them added, which the label prints as 24% of the Daily Value. The serving delivers 2 g protein and 1 g dietary fiber (4% DV). Fortification adds 7.2 mg iron (40% DV), 120 mcg folate (30% DV), and 2 mcg vitamin D (10% DV), while calcium and potassium both sit at 0% DV. Pour on 3/4 cup skim milk and the serving climbs to 200 calories.

Serving Size and Calories: 1 Cup, 37 g, 130 Calories

The manufacturer’s retail entry sets the basis at 1 cup (37 g) for 130 calories. Everything else on the panel is measured against that weight, so the moment a source uses a different serving, the numbers stop lining up. The SmartLabel entry from WK Kellogg Co is the retail figure this desk treats as authoritative for the box you buy at the store.

At 130 calories, a dry cup carries 33 g total carbohydrate, printed at 12% DV. That leaves the sugar question, which is where the panel gets more useful than the front of the box.

Added Sugar: 12 g, and Why the Panel Calls It 24% DV

The 12 g total sugars and 12 g added sugars printed on the label are the same physical sugar. There is no naturally occurring sugar in milled corn to separate out, so the two lines match. The panel expresses that 12 g as 24% of the Daily Value.

That percentage is anchored to a fixed reference. The Daily Value for added sugars is 50 grams per day on a 2,000-calorie diet, a figure set by the U.S. Food and Drug Administration on its added sugars label guidance. One dry cup of Frosted Flakes uses 12 g against that 50 g ceiling – roughly a quarter of the day’s allowance before you add anything, and before milk, coffee, or the rest of what you eat.

The FDA’s own page carries an illustrative example that reads differently: 7 g of added sugars represents 14% of the Daily Value. That is a teaching example on a different quantity, not a contradiction of the Frosted Flakes figure. The product’s 12 g at 24% DV and the guidance’s 7 g at 14% DV are two separate numbers doing two separate jobs.

Is Frosted Flakes “High in Added Sugar”? The FDA Has a Threshold

“High in sugar” usually reads as opinion. Here it is a defined line. The FDA considers 20% DV or more of a nutrient per serving to be a HIGH source, and it publishes that threshold on the same added sugars page. Frosted Flakes Original lands at 24% DV for added sugars – above the 20% cutoff.

So the phrase is not editorializing. By the regulator’s own rule, a single serving qualifies as a HIGH source of added sugars. That is the fact a generic “cereals are sugary” article never nails down: the specific percentage and the specific line it crosses.

There is a second yardstick. The Dietary Guidelines for Americans recommend limiting calories from added sugars to less than 10 percent of total daily calories, which the FDA references alongside the 50 g/day figure. On a 2,000-calorie day, that 10 percent target and the 50 g Daily Value point at the same ceiling from two directions.

Sodium and Carbohydrate Per Serving

The panel also declares sodium and total carbohydrate for a dry serving. For a food most people read as “just sweet,” the sodium line is easy to miss. The salt is declared in the ingredients – 2% or less of salt – and it is worth logging if you track sodium across the day.

The carbohydrate is dense and fast, with only 1 g of that as fiber. There is almost nothing in the cup to slow it down. For a bran-style contrast, the numbers in our Raisin Bran Nutrition Facts breakdown show how differently a higher-fiber cereal reports against the same categories.

What Frosted Flakes Has, and What It Doesn’t

Frosted Flakes is fortified, and the foodservice declaration spells out where. Per serving it provides 7.2 mg iron (40% DV), 120 mcg folate (30% DV) including 70 mcg folic acid, and 2 mcg vitamin D (10% DV). Those are meaningful contributions to three specific micronutrients. The WK Kellogg Away From Home product page is the source for the micronutrient lines.

The gaps matter as much as the fortification. The same page logs 0 mg calcium (0% DV) and 30 mg potassium (0% DV). Protein is 2 g and dietary fiber is 1 g (4% DV). So the cereal is a real source of iron and folate and a non-source of calcium, potassium, and fiber. Milk is doing the calcium work in the traditional bowl, not the flakes.

• Iron: 7.2 mg, 40% DV
• Folate: 120 mcg, 30% DV (70 mcg folic acid)
• Vitamin D: 2 mcg, 10% DV
• Calcium: 0 mg, 0% DV
• Potassium: 30 mg, 0% DV
• Protein: 2 g  |  Fiber: 1 g, 4% DV

Add 3/4 Cup Skim Milk: 130 to 200 Calories

The panel gives a “with milk” column, and it changes the picture. Once you pour on 3/4 cup skim milk, that same serving now registers 22 g total sugars, 270 mg sodium, and 200 calories. The calories and the total sugar figure both climb once the milk is poured on.

Read the sugar line carefully. The added sugars stay at 12 g – the extra 10 g of total sugar is lactose from the milk, which is naturally occurring, not added. So milk raises the total sugar figure without touching the added-sugar count that the FDA threshold is built around. If you are watching added sugar specifically, the milk does not move that number; if you are watching total calories or total sugar, it moves both.

Original vs. 25% Less Sugar: Sugar Drops, Sodium Rises

The reduced-sugar box is not a straight downgrade of the Original, and the two labels prove it. The brand states that Frosted Flakes Original contains 12 g sugar per 37 g serving while the reduced version contains 9 g sugar per the same 37 g serving – a 3 g cut, confirmed on WK Kellogg Co’s reduced-sugar page.

Here is where a shopper gets tripped up. The 25% Less Sugar SmartLabel lists 130 calories, 210 mg sodium, and 9 g added sugars (18% DV) per serving. So the calories hold at 130 – identical to the Original – while the sodium moves in the other direction. What genuinely improves is added sugar: 24% DV down to 18% DV. That 18% figure also drops below the FDA’s 20% HIGH threshold, so the reduced version no longer qualifies as a HIGH source of added sugars while the Original does.

• Sugar: Original 12 g → 25% Less Sugar 9 g
• Added sugar %DV: 24% → 18% (crosses below the 20% HIGH line)
• Calories: 130 → 130 (no change)
• Sodium: reduced version lists 210 mg

The trade is a lower sugar load for identical calories and slightly more sodium. Whether that is worth it depends on which number you were trying to cut. If it was calories, the swap does nothing.

Ingredients, Allergens, and Kosher Status

Two independent notes are worth flagging without overreading them. The Environmental Working Group points out the product lists the non-specific ingredient “flavor” and contains ingredients that may be genetically engineered – observations about labeling specificity, not safety verdicts, drawn from its Food Scores entry. This desk does not evaluate the food; it reports what the declarations say.

A Frosted Flakes Nutrition Facts Table (Dry vs. With Milk)

Structured from the manufacturer’s retail panel, per 1 cup (37 g) serving.

For a sweeter, cinnamon-coated point of comparison in the same aisle, the panel in our Cinnamon Toast Crunch Nutrition Facts guide reports against a heavier serving, and our Corn Flakes Nutrition Facts breakdown shows what the unfrosted base grain logs. All three sit within our wider pantry basics coverage.

Why Other Sites Show Different Frosted Flakes Numbers

Search around and the calorie count wanders from one listing to the next. The reason is the serving basis, not a mistake in either place. Institutional and dining entries often weigh a portion differently: a dining serving can be far larger than the retail cup, and a kitchen’s “1 cup” can be packed to a heavier gram weight than the label’s 37 g.

The retail label fixes its cup at 37 g for 130 calories. When you see a number that doesn’t match, check the gram weight before assuming the panel is wrong. For a comparable case of dueling serving sizes on one cereal, our Fruit Loops Nutrition Facts piece walks through how a re-weighted serving changes every line at once. This desk uses the SmartLabel retail figure as the reference point and treats non-label institutional entries as separate contexts, not corrections.

An older label also circulates from before the current panel format. Manufacturers can also change a recipe without announcement, so treat any panel as accurate for the box in front of you.

How Many Bowls Hit the Day’s Added-Sugar Ceiling

The panel prints 12 g of added sugars per dry cup of Frosted Flakes Original, and the FDA sets the added-sugar Daily Value at 50 g per day on a 2,000-calorie diet. Divide one into the other and the whole day’s allowance is spent in just over four cups – before any other food, and before the milk. Here is what that ceiling looks like cup by cup, and how the 25% Less Sugar box (9 g per cup) changes the count.

• Original, to reach 50 g: 50 ÷ 12 = 4.17 dry cups. A little over four bowls maxes out the day’s added-sugar budget on cereal alone.
• 25% Less Sugar, to reach 50 g: 50 ÷ 9 = 5.56 dry cups – you get to eat more before hitting the same line.
• Saved per cup by switching: 12 − 9 = 3 g of added sugar per bowl.
• Extra headroom from switching: (50 ÷ 9) − (50 ÷ 12) = 1.39 more cups before the daily ceiling is reached.

Note that these figures count added sugar only, not the lactose milk contributes, and use the FDA’s 50 g Daily Value as printed on its added-sugars guidance. Individual added-sugar needs vary; the 50 g reference is a fixed 2,000-calorie benchmark, not a personal target.

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