Calorie data · Snacks← All foods

How many calories in
protein bar?

Protein Bar comes in at 375 calories per 100g. Reasonable density for a snack food. Strong protein contribution for the calorie load.

375
kcal · 100g
30g
Protein
35g
Carbs
12g
Fat
Servings

Common serving sizes.

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

Serving
Calories
Protein
3 oz (85g)
319 kcal
25.5g
4 oz (113g)
424 kcal
33.9g
1 cup (~150g)
563 kcal
45.0g
In your day

What 375 calories means.

Balanced — protein bar sits in a moderate range and fits weight loss, maintenance, or muscle gain when portioned to your daily target.

Share of a 2,000-kcal day
19%
per 100g · 8g protein per 100 kcal
Time to burn it off
🚶 Walking71 min
🏃 Running37 min
🚴 Cycling41 min
Estimated for a 70 kg / 154 lb adult
Comparison

Protein Bar vs. similar foods.

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

Food
Calories
Protein / 100 kcal
Protein Bar
375 kcal / 100g
8g
380 kcal / 100g
2.6g
387 kcal / 100g (air-popped)
3.4g
387 kcal / 100g
2.1g
Track this food

Skip the lookup. Snap the plate.

Point your iPhone camera at protein bar 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 protein bar?

Protein Bar has approximately 375 calories per 100g. A typical serving — 3 oz (85g) — comes in at 319 calories.

How much protein is in protein bar?

30g of protein per 100g. That puts protein bar at roughly 8.0g of protein per 100 calories — a useful lens when comparing to other snacks sources.

How do I log protein bar 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 protein bar good for weight loss?

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