Calorie data · Grains← All foods

How many calories in
rice krispies?

A 100g of rice krispies comes in at 393 calories, with 6g of protein and 87g of carbs. Calorie tracking trips up here when people log cooked weights using dry-weight numbers (or vice versa).

393
kcal · 100g
6g
Protein
87g
Carbs
0.7g
Fat
Servings

Common serving sizes.

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

Serving
Calories
Protein
3 oz (85g)
334 kcal
5.1g
4 oz (113g)
444 kcal
6.8g
1 cup (~150g)
590 kcal
9.0g
In your day

What 393 calories means.

Carb-forward — most of its 393 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
20%
per 100g · 1.5g protein per 100 kcal
Time to burn it off
🚶 Walking75 min
🏃 Running39 min
🚴 Cycling43 min
Estimated for a 70 kg / 154 lb adult
Comparison

Rice Krispies vs. similar foods.

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

Food
Calories
Protein / 100 kcal
Rice Krispies
393 kcal / 100g
1.5g
393 kcal / 100g
1.7g
384 kcal / 100g
1.2g
379 kcal / 100g
4.5g
Track this food

Skip the lookup. Snap the plate.

Point your iPhone camera at rice krispies 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 rice krispies?

Rice Krispies has approximately 393 calories per 100g. A typical serving — 3 oz (85g) — comes in at 334 calories.

How much protein is in rice krispies?

6g of protein per 100g. That puts rice krispies at roughly 1.5g of protein per 100 calories — a useful lens when comparing to other grains sources.

How do I log rice krispies 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 rice krispies good for weight loss?

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