Calorie data · Sweets← All foods

How many calories in
marshmallow?

Per 100g, marshmallow delivers 318 calories and 81g of carbs. Per-piece numbers depend heavily on size — log accurately by reading the package.

318
kcal · 100g
1.8g
Protein
81g
Carbs
0.2g
Fat
Servings

Common serving sizes.

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

Serving
Calories
Protein
3 oz (85g)
270 kcal
1.5g
4 oz (113g)
359 kcal
2.0g
1 cup (~150g)
477 kcal
2.7g
In your day

What 318 calories means.

Carb-forward — most of its 318 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
16%
per 100g · 0.6g protein per 100 kcal
Time to burn it off
🚶 Walking60 min
🏃 Running31 min
🚴 Cycling35 min
Estimated for a 70 kg / 154 lb adult
Comparison

Marshmallow vs. similar foods.

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

Food
Calories
Protein / 100 kcal
Marshmallow
318 kcal / 100g
0.6g
320 kcal / 100g
1.4g
321 kcal / 100g
1.7g
325 kcal / 100g
2.1g
Track this food

Skip the lookup. Snap the plate.

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

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FAQ

Quick answers.

How many calories in marshmallow?

Marshmallow has approximately 318 calories per 100g. A typical serving — 3 oz (85g) — comes in at 270 calories.

How much protein is in marshmallow?

1.8g of protein per 100g. That puts marshmallow at roughly 0.6g of protein per 100 calories — a useful lens when comparing to other sweets sources.

How do I log marshmallow 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 marshmallow good for weight loss?

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