Calorie data · Vegetables← All foods

How many calories in
pearl onion?

Pearl Onion comes in at 40 calories per 100g. A more substantial veg by calorie content.

40
kcal · 100g
1.1g
Protein
9.3g
Carbs
0.1g
Fat
Servings

Common serving sizes.

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

Serving
Calories
Protein
3 oz (85g)
34 kcal
0.9g
4 oz (113g)
45 kcal
1.2g
1 cup (~150g)
60 kcal
1.7g
In your day

What 40 calories means.

Very low calorie — at 40 kcal per 100g, pearl onion adds volume to a meal without meaningfully denting a calorie deficit.

Share of a 2,000-kcal day
2%
per 100g · 2.8g protein per 100 kcal
Time to burn it off
🚶 Walking8 min
🏃 Running4 min
🚴 Cycling4 min
Estimated for a 70 kg / 154 lb adult
Comparison

Pearl Onion vs. similar foods.

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

Food
Calories
Protein / 100 kcal
Pearl Onion
40 kcal / 100g
2.8g
40 kcal / 100g
2.8g
40 kcal / 100g
2g
40 kcal / 100g
2.3g
Track this food

Skip the lookup. Snap the plate.

Point your iPhone camera at pearl onion 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 pearl onion?

Pearl Onion has approximately 40 calories per 100g. A typical serving — 3 oz (85g) — comes in at 34 calories.

How much protein is in pearl onion?

1.1g of protein per 100g. That puts pearl onion at roughly 2.8g of protein per 100 calories — a useful lens when comparing to other vegetables sources.

How do I log pearl onion 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 pearl onion good for weight loss?

It depends on your overall calorie target. Pearl Onion is naturally low-calorie at 40 kcal per 100g, so it's easy to fit into a deficit.