Calorie data · Grains← All foods

How many calories in
corn flakes?

Corn Flakes is 357 calories per 100g, mostly carbs at 84g. A dense carb source — sensible to weigh dry vs cooked carefully. Common in fitness meal prep for steady-energy carbohydrates.

357
kcal · 100g
7g
Protein
84g
Carbs
0.4g
Fat
Servings

Common serving sizes.

Calories scale with portion. Here's how a typical corn flakes serving translates in your tracker:

Serving
Calories
Protein
3 oz (85g)
303 kcal
5.9g
4 oz (113g)
403 kcal
7.9g
1 cup (~150g)
536 kcal
10.5g
In your day

What 357 calories means.

Carb-forward — most of its 357 kcal come from carbohydrate, so it's best placed around training when your body uses carbs most readily.

Share of a 2,000-kcal day
18%
per 100g · 2g protein per 100 kcal
Time to burn it off
🚶 Walking68 min
🏃 Running35 min
🚴 Cycling39 min
Estimated for a 70 kg / 154 lb adult
Comparison

Corn Flakes vs. similar foods.

How corn flakes stacks up on calories and protein against foods people commonly compare it to:

Food
Calories
Protein / 100 kcal
Corn Flakes
357 kcal / 100g
2g
353 kcal / 100g
2g
362 kcal / 100g
2.8g
351 kcal / 100g
0.1g
Track this food

Skip the lookup. Snap the plate.

Point your iPhone camera at corn flakes and Spotwell's AI estimates the portion and macros in a few seconds. Check it, adjust anything that looks off, and log it.

Download on theApp Store
FAQ

Quick answers.

How many calories in corn flakes?

Corn Flakes has approximately 357 calories per 100g. A typical serving — 3 oz (85g) — comes in at 303 calories.

How much protein is in corn flakes?

7g of protein per 100g. That puts corn flakes at roughly 2.0g of protein per 100 calories — a useful lens when comparing to other grains sources.

How do I log corn flakes accurately?

The simplest method: weigh it on a kitchen scale, then enter grams in your tracker. With Spotwell, you can skip the scale — point the camera at the plate and the AI estimates the portion in a few seconds. Adjust the value if it looks off.

Is corn flakes good for weight loss?

It depends on your overall calorie target. Corn Flakes sits in a moderate calorie range. It can fit any goal — weight loss, maintenance, or muscle gain — when portioned to your daily target.